Python all()

2022-12-14 02:14| 来源: 网络整理| 查看: 265

The all() function returns True if all elements in the given iterable are true. If not, it returns False.

Example boolean_list = ['True', 'True', 'True'] # check if all elements are true result = all(boolean_list) print(result) # Output: True all() Syntax

The syntax of the all() function is:

all(iterable) all() Parameters

The all() function takes a single parameter:

iterable - any iterable (list, tuple, dictionary, etc.) which contains the elements all() Return Value

all() function returns:

True - If all elements in an iterable are true False - If any element in an iterable is false When Return Value All values are true True All values are false False One value is true (others are false) False One value is false (others are true) False Empty Iterable True Example 1: How all() works for lists? # all values true l = [1, 3, 4, 5] print(all(l)) # all values false l = [0, False] print(all(l)) # one false value l = [1, 3, 4, 0] print(all(l)) # one true value l = [0, False, 5] print(all(l)) # empty iterable l = [] print(all(l))

Output

True False False False True

The all() function works in a similar way for tuples and sets like lists.

Example 2: How all() works for strings? s = "This is good" print(all(s)) # 0 is False # '0' is True s = '000' print(all(s)) s = '' print(all(s))

Output

True True True Example 3: How all() works with Python dictionaries?

In the case of dictionaries, if all keys (not values) are true or the dictionary is empty, all() returns True. Else, it returns false for all other cases..

s = {0: 'False', 1: 'False'} print(all(s)) s = {1: 'True', 2: 'True'} print(all(s)) s = {1: 'True', False: 0} print(all(s)) s = {} print(all(s)) # 0 is False # '0' is True s = {'0': 'True'} print(all(s))

Output

False True False True True

【本文地址】

公司简介

联系我们