Bagaimana cara menambahkan atribut ke daftar dengan python?

Kelas adalah cetak biru atau prototipe yang ditentukan pengguna dari mana objek dibuat. Kelas menyediakan sarana bundling data dan fungsionalitas bersama. Membuat kelas baru akan membuat tipe objek baru, yang memungkinkan instance baru dari tipe tersebut dibuat. Setiap instance kelas dapat memiliki atribut yang melekat padanya untuk mempertahankan statusnya. Instance kelas juga dapat memiliki metode (ditentukan oleh kelasnya) untuk memodifikasi statusnya.

Table of Contents Show

Mendapatkan Daftar Atribut Kelas
Menggunakan fungsi dir() bawaan
Menggunakan metode getmembers()
Menggunakan Metode Ajaib __dict__()
Bagaimana Anda menambahkan atribut ke daftar dengan Python?
Bagaimana Anda menambahkan atribut ke daftar?
Apa atribut dalam Python untuk daftar?
Apa atribut dalam contoh Python?

Contoh.

Python3

# Python program to demonstrate

# classes

class Student:

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}

first second third 2
{'attr': 2}

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}

first second third 2
{'attr': 2}

9# Python program to demonstrate0# Python program to demonstrate1# Python program to demonstrate2

# Python program to demonstrate3

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}

8# Python program to demonstrate6# Python program to demonstrate0# Python program to demonstrate8# Python program to demonstrate2

________114

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_114_______1

________114

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_114_______3

________114

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_114_______5

# classes0# classes7

# classes_8

# classes_9

________114

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_115_______1

Keluaran.

COE
COE
Shivam
Sachin
COE

Catatan. Untuk informasi lebih lanjut, lihat Kelas dan Objek Python

Mendapatkan Daftar Atribut Kelas

Penting untuk mengetahui atribut yang sedang kita kerjakan. Untuk data kecil, mudah untuk mengingat nama-nama atributnya, tetapi ketika bekerja dengan data besar, sulit untuk mengingat semua atributnya. Untungnya, kami memiliki beberapa fungsi dalam Python yang tersedia untuk tugas ini.

Menggunakan fungsi dir() bawaan

Untuk mendapatkan daftar semua atribut, metode bersama dengan beberapa metode ajaib yang diwariskan dari suatu kelas, kita menggunakan built-in bernama dir() .

Contoh.

Python3

class class3

class_4

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_115_______6

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_115_______8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:0

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_116_______2

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:4

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_116_______6

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:8

class_4

class4

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 4

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 7

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 9

class4

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

9 3

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 5

5# classes0 8

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

12# Python program to demonstrate2

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_14

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_15

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_16

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_17

# classes0 8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

20# Python program to demonstrate2

# classes0 8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

# classes0 8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

28# Python program to demonstrate2

# classes0 8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

Keluaran.

pertama kedua ketiga 2 Dengan meneruskan objek kelas ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__',

Menggunakan metode getmembers()

Cara lain untuk menemukan daftar atribut adalah dengan menggunakan modul inspect . Modul ini menyediakan metode bernama getmembers() yang mengembalikan daftar atribut dan metode kelas.

Contoh.

Python3

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

class class3

class_4

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_115_______6

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_115_______8

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:0

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_116_______2

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:4

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_116_______6

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 Student:8

class_4

class4

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 4

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 7

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

3 9

class4

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

9 3

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

1 5

5# classes0 8

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
{'attr': 2}

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

12# Python program to demonstrate2

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_14

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_91

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_92

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_93

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

class_4

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

________115

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

_6_______01

class4

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

08 5

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

_21# classes0

first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])

Keluaran.

first second third 2
('attr', 2)
('one', 'first')
('three', 'third')
('two', 'second')

Menggunakan Metode Ajaib dict()

Untuk mencari atribut kita juga bisa menggunakan fungsi vars(). Metode ini mengembalikan kamus atribut contoh dari objek yang diberikan

Bagaimana Anda menambahkan atribut ke daftar dengan Python?

Kita dapat menambahkan nama ke daftar dengan dua cara. Pertama, kita dapat menggunakan nama() untuk menetapkan nama ke item daftar dalam daftar yang sudah ada sebelumnya . Kedua, kita bisa menambahkan nama ke daftar saat kita membuat daftar. Kami juga dapat menambahkan komentar ke daftar.

Bagaimana Anda menambahkan atribut ke daftar?

Klik kanan pada daftar yang ingin Anda tambahkan nama atribut baru dan klik Tambahkan atribut baru . Kotak teks muncul dalam daftar.

Apa atribut dalam Python untuk daftar?

Karakteristik penting dari daftar Python adalah sebagai berikut. .

Daftar dipesan

Daftar dapat berisi objek arbitrer apa pun

Daftar elemen dapat diakses oleh indeks

Daftar dapat disarangkan ke kedalaman yang sewenang-wenang

Daftar dapat berubah

Daftar bersifat dinamis

Apa atribut dalam contoh Python?

Untuk memberikan definisi dasar dari kedua istilah tersebut, atribut kelas adalah variabel kelas yang diwariskan oleh setiap objek kelas . Nilai atribut kelas tetap sama untuk setiap objek baru. Seperti yang akan Anda lihat pada contoh di bagian ini, atribut kelas didefinisikan di luar fungsi __init__().