All () function in Python

In Python, all () returns True when all iterable elements are True or iterable empty and return False in the remaining cases. How does the function all () have syntax, what parameters do we have, let's find out in this section.

Syntax of all () function:

all (iterable)

The parameters of all ():

The all () function has a unique parameter called iterable, it can be list, tuple, dictionary, . containing elements.

What value does the all () function return?

See the return table below for all () function.

When the value returnedAll values ​​are True All values ​​are False False A True value (False remaining values) False A False value (True values ​​left) False True True Iterable

Example of all () function with the parameter is a list

 # List chứa toàn giá trị True 
 danhsach = [6,7,8,9,10] 
 print(all(danhsach)) 
 
 # Tất cả các giá trị của list là False 
 danhsach = [0, False] 
 print(all(danhsach)) 
 
 # List chứa một giá trị False 
 danhsach = [10,9,5, 0] 
 print(all(danhsach)) 
 
 # List chứa một giá trị True 
 danhsach = [0, False, 1] 
 print(all(danhsach)) 
 
 # List rỗng 
 danhsach = [] 
 print(all(danhsach)) 

The above example takes all the cases mentioned in the return value table of all () function, when running the program, we get the following result:

 True 
 False 
 False 
 False 
 True 

With a parameter of a tuple or set, the all () function works the same way.

Example of all () with the parameter string:

 chuoi = "TipsMake.com" 
 print(all(chuoi)) 
 
 chuoi = '0' 
 print(all(chuoi)) 
 
 chuoi = '' 
 print(all(chuoi)) 

In the previous Python functions, you know 0 is False but '0' (with quotes) is True. Therefore, when running the above program, we get the entire result as True.

Example of all () function with parameter is dictionary:

With dictionary, if all keys are True or empty, then all () will return True, otherwise it will return False.

 dic = {0: 'False', 1: 'False'} 
 print(all(dic)) 
 
 dic = {5: 'True', 10: 'True'} 
 print(all(dic)) 
 
 dic = {11: 'True', False: 0} 
 print(all(dic)) 
 
 dic = {} 
 print(all(dic)) 
 
 dic = {'0': 'True'} 
 print(all(dic)) 

When running the above program, we will get the return value as follows:

 False 
 True 
 False 
 True 
 True 

Above is the information about all (), do you see any () and all () functions differently? Also, don't ignore Python and other Python functions.