Ketika mengiris dengan python apa yang ditentukan oleh 0 dalam pernyataan ini 0 2

Pelajari cara menyimpan, mengakses, dan memanipulasi data dalam daftar. langkah pertama untuk bekerja secara efisien dengan data dalam jumlah besar

slide_link

https. //proyektor-video-pdf-converter. datacamp. com/735/bab2. pdf

nb_of_exercisetitle

5

Daftar Python

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6

Daftar Subset

nb_of_exercisetitle

5

Memanipulasi Daftar

Daftar Python

type: VideoExercise
key: a5886d213f
xp: 50

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Buat daftar

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Berbeda dengan

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Setelah mengukur tinggi keluarga Anda, Anda memutuskan untuk mengumpulkan beberapa informasi tentang rumah tempat Anda tinggal. Area dari berbagai bagian rumah Anda disimpan dalam variabel terpisah untuk saat ini, seperti yang ditunjukkan pada skrip

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Buat daftar,
  0, yang berisi luas lorong (
  1), dapur (
  2), ruang tamu (
  3), kamar tidur (
  4) dan kamar mandi (
  5), dalam urutan ini. Gunakan variabel yang telah ditentukan sebelumnya
• Cetak
  _0 dengan fungsi

• Anda dapat menggunakan variabel yang telah dibuat untuk membuat daftar.
  _9
• Masukkan

  # area variables (in square meters)
  hall = 11.25
  kit = 18.0
  liv = 20.0
  bed = 10.75
  bath = 9.50
  
  # Adapt list areas
  areas = [hall, kit, "living room", liv, bed, "bathroom", bath]
  
  # Print areas
  
  

  0 dalam skrip Anda untuk mencetak daftar saat mengirimkan

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Buat daftar dengan jenis yang berbeda

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Daftar dapat berisi semua jenis Python. Meskipun tidak terlalu umum, daftar juga dapat berisi campuran tipe Python termasuk string, float, boolean, dll.

Cetakan dari latihan sebelumnya tidak terlalu memuaskan. Itu hanya daftar angka yang mewakili area, tetapi Anda tidak dapat menentukan area mana yang sesuai dengan bagian mana dari rumah Anda

Kode di editor adalah awal dari sebuah solusi. Untuk beberapa area, nama ruangan yang sesuai sudah ditempatkan di depan. Perhatikan di sini.

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Selesaikan kode yang membuat daftar
  _0. Buat daftar sehingga daftar pertama berisi nama setiap ruangan sebagai string, lalu luasnya. Dengan kata lain, tambahkan string

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _00,

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  01 dan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  02 di lokasi yang sesuai
• Cetak
  _0 lagi;

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Pilih daftar yang valid

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Daftar dapat berisi semua jenis Python. Tetapi daftar itu sendiri juga merupakan tipe Python. Itu artinya daftar juga bisa berisi daftar. Python semakin lucu dari menit ke menit, tapi jangan takut, ingat saja sintaks daftarnya

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Bisakah Anda mengetahui mana dari baris kode Python berikut yang merupakan cara yang valid untuk membuat daftar?

A.

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

• A, B dan C
• B
• B dan C
• C

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Daftar daftar

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Sebagai ilmuwan data, Anda akan sering berurusan dengan banyak data, dan masuk akal untuk mengelompokkan beberapa data ini

Alih-alih membuat daftar datar yang berisi string dan pelampung, mewakili nama dan area ruangan di rumah Anda, Anda dapat membuat daftar daftar. Skrip di editor sudah bisa memberi Anda ide

Jangan bingung di sini.

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Selesaikan daftar list sehingga juga berisi data kamar tidur dan kamar mandi. Pastikan Anda memasukkannya secara berurutan
• Cetak

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _22;
• Cetak jenis

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _22. Apakah Anda masih berurusan dengan daftar?

• Tambahkan sublist ke daftar

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _22 dengan menambahkan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  26 dan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  27 di dalam tanda kurung siku
• Untuk mencetak variabel

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  28, tulis

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  29 pada baris baru di skrip Python
• Untuk mencetak jenis variabel

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _28, Anda dapat menggunakan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  31

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Daftar Subset

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Subset dan taklukkan

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Subsetting daftar Python adalah sepotong kue. Ambil contoh kode di bawah ini, yang membuat daftar

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Ingat daftar

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Cetak elemen kedua dari daftar
  _0 (memiliki nilai

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  20)
• Subset dan cetak elemen terakhir dari
  0, menjadi

  # area variables (in square meters)
  hall = 11.25
  kit = 18.0
  liv = 20.0
  bed = 10.75
  bath = 9.50
  
  # Adapt list areas
  areas = [hall, kit, "living room", liv, bed, "bathroom", bath]
  
  # Print areas
  
  

  7. Menggunakan indeks negatif masuk akal di sini
• Pilih nomor yang mewakili luas ruang tamu (

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  44) dan cetaklah

• Gunakan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _46 untuk memilih elemen kedua dari daftar

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  28. Pastikan untuk membungkus operasi subset Anda dalam sebuah panggilan
• Gunakan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _49 untuk memilih elemen terakhir dari daftar

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  28. Pastikan untuk membungkus operasi subset Anda dalam sebuah panggilan
• Angka yang mewakili luas ruang tamu adalah elemen ke-6 dalam daftar, jadi Anda memerlukan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  52 di sini

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Subset dan hitung

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Setelah mengekstraksi nilai dari daftar, Anda dapat menggunakannya untuk melakukan penghitungan tambahan. Ambil contoh ini, di mana elemen kedua dan keempat dari daftar

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Menggunakan kombinasi subset daftar dan penetapan variabel, buat variabel baru,

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  60, yang berisi jumlah luas dapur dan luas kamar tidur
• Cetak variabel baru

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _60

• Tambahkan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _63 ke

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  64 untuk menghitung

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  60
• Cetak

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _60.

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _67

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

Mengiris dan memotong

Memilih nilai tunggal dari daftar hanyalah salah satu bagian dari cerita. Dimungkinkan juga untuk mengiris daftar Anda, yang berarti memilih beberapa elemen dari daftar Anda. Gunakan sintaks berikut

Indeks

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Contoh kode di bawah ini menunjukkan contoh. Daftar dengan

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

Elemen dengan indeks 1 dan 2 dimasukkan, sedangkan elemen dengan indeks 3 tidak disertakan

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Gunakan pengiris untuk membuat daftar,

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  78, yang berisi 6 elemen pertama dari
  0
• Lakukan hal serupa untuk membuat variabel baru,

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  80, yang berisi 4 elemen terakhir dari
  0
• Cetak

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _78 dan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  80 menggunakan

• Gunakan tanda kurung

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  86 untuk membangun

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  78
• Gunakan tanda kurung

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  88 untuk membangun

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  80
• Cukup tambahkan dua panggilan ke skrip untuk mencetak

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  78 dan

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  80

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

Mengiris dan Memotong (2)

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

Dalam video tersebut, Hugo pertama kali membahas sintaks tempat Anda menentukan tempat untuk memulai dan mengakhiri potongan daftar Anda

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

Namun, mungkin juga untuk tidak menentukan indeks ini. Jika Anda tidak menentukan indeks

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Buat

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _78 lagi, sebagai elemen

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  01 pertama dari
  0. Kali ini, sederhanakan pemotongan dengan menghilangkan indeks

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  97
• Buat

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _80 lagi, sebagai elemen

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  05 terakhir dari
  0. Kali ini, sederhanakan pemotongan dengan menghilangkan indeks

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  73

• Untuk mendapatkan 5 elemen pertama dari daftar,

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _09, Anda akan menggunakan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  10
• Untuk mendapatkan semuanya kecuali 5 elemen pertama, Anda akan menggunakan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  11

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

Subsetting daftar daftar

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

Anda telah melihat sebelumnya bahwa daftar Python dapat berisi hampir semua hal; . Untuk membuat daftar subset, Anda dapat menggunakan teknik yang sama seperti sebelumnya. tanda kurung siku. Cobalah perintah dalam contoh kode berikut di IPython Shell

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas


# Print areas

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Apa yang akan dikembalikan

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

• Pelampung. area dapur
• Sebuah benang.

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _01
• Pelampung. area kamar mandi
• Sebuah benang.

  # area variables (in square meters)
  hall = 11.25
  kit = 18.0
  liv = 20.0
  bed = 10.75
  bath = 9.50
  
  # Adapt list areas
  areas = [hall, kit, "living room", liv, bed, "bathroom", bath]
  
  # Print areas
  
  

  _5

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

Memanipulasi Daftar

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Ganti elemen daftar

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

Mengganti elemen daftar cukup mudah. Cukup subset daftar dan tetapkan nilai baru ke subset. Anda dapat memilih satu elemen atau Anda dapat mengubah seluruh irisan daftar sekaligus

Gunakan IPython Shell untuk bereksperimen dengan perintah di bawah ini. Bisakah Anda memberi tahu apa yang terjadi dan mengapa?

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

Untuk latihan ini dan selanjutnya, Anda akan terus mengerjakan daftar

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Perbarui luas area kamar mandi menjadi 10. 50 meter persegi bukannya 9. 50
• Jadikan daftar
  _0 lebih trendi. Ubah

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _33 menjadi

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  34

• Gunakan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _36 untuk memperbarui area kamar mandi. Dapatkah Anda mengisi kekosongan?
• Demikian pula, Anda dapat menggunakan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _37 untuk memperbarui elemen

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  33

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

Perpanjang daftar

# Area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Create list areas
areas = [hall, kit, liv, bed, bath]

# Print areas
print(areas)

Jika Anda dapat mengubah elemen dalam daftar, Anda pasti ingin menambahkan elemen ke dalamnya, bukan?

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Anda baru saja memenangkan lotere, luar biasa. Anda memutuskan untuk membangun rumah biliar dan garasi. Bisakah Anda menambahkan informasi ke daftar

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

• Gunakan operator

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  _58 untuk menempelkan daftar

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  47 ke akhir daftar
  0. Simpan daftar yang dihasilkan sebagai

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _49
• Perluas lebih lanjut

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _49 dengan menambahkan data di garasi Anda. Tambahkan string

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _51 dan float

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  52. Beri nama daftar yang dihasilkan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _53

• Ikuti contoh kode di tugas.

  type: NormalExercise
  key: e6c527bf41
  lang: python
  xp: 100
  skills:
    - 2

  28 adalah
  0 di sini, dan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  57 adalah

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  47
• Untuk menambahkan lebih banyak elemen ke

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _49, gunakan

  a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  60

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Hapus elemen daftar

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Terakhir, Anda juga dapat menghapus elemen dari daftar Anda. Anda dapat melakukan ini dengan pernyataan

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Perhatikan di sini. segera setelah Anda menghapus elemen dari daftar, indeks elemen yang muncul setelah elemen yang dihapus semuanya berubah

Versi

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Ada kesalahan. Jumlah yang Anda menangkan dengan lotre tidak terlalu besar dan sepertinya poolhouse tidak akan terjadi. Anda memutuskan untuk menghapus string yang sesuai dan mengapung dari daftar

Tanda

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

Manakah dari potongan kode yang akan melakukan pekerjaan untuk kita?

type: NormalExercise
key: e6c527bf41
lang: python
xp: 100
skills:
  - 2

• a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _70

• a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _71

• a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _72

• a = "is"
  b = "nice"
  my_list = ["my", "list", a, b]
  

  _73

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

predef_msg = "Don't remove or edit the predefined variables!"
areas_msg = "Define `areas` as the list containing all the area variables, in the correct order: `[hall, kit, liv, bed, bath]`. Watch out for typos. The list shouldn't contain anything else!"

Ex().check_correct(
    has_printout(0, not_printed_msg = "__JINJA__:Have you used `{{sol_call}}` to print out the `areas` list at the end of your script?"),
    check_correct(
        check_object("areas").has_equal_value(incorrect_msg = areas_msg),
        multi(
            check_object('hall', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('kit', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('liv', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bed', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg),
            check_object('bath', missing_msg=predef_msg).has_equal_value(incorrect_msg=predef_msg)
        )
    )
)

success_msg("Nice! A list is way better here, isn't it?")

# area variables (in square meters)
hall = 11.25
kit = 18.0
liv = 20.0
bed = 10.75
bath = 9.50

# Adapt list areas
areas = [hall, kit, "living room", liv, bed, "bathroom", bath]

# Print areas

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Cara kerja bagian dalam daftar

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

Di akhir video, Hugo menjelaskan cara kerja daftar Python di belakang layar. Dalam latihan ini Anda akan mendapatkan pengalaman langsung dengan ini

Kode Python dalam skrip sudah membuat daftar dengan nama

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Jika Anda ingin mencegah perubahan di

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

type: NormalExercise
key: 1702a8bcdc
lang: python
xp: 100
skills:
  - 2

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

a = "is"
b = "nice"
my_list = ["my", "list", a, b]

Metode apa yang mengatur elemen dalam daftar tertentu dalam urutan menurun atau naik tertentu?

Apa atribut data yang akan mengembalikan judul file?

Mengapa merupakan praktik terbaik untuk memiliki banyak pernyataan kecuali dengan setiap jenis kesalahan diberi label dengan benar?