All() Built-in Function In Python

Function Name:

all(iterableObject)

Function Overview:

The all() function checks whether a python iterable object has all of its elements evaluate to True. For example, a python list object with some of its elements as None will make the all() method return False;

If the iterable object is empty the all() function will return True;

The all() method will return true if the iterable object is empty or all the elements of the iterable object evaluate to True;

Parameters:

iterableObject - A python iterator object

 

Python Example Program using all() function:

# An iterable with some members as None to be checked

list = [5,7,3,None,15,12,11,None]

print("Return value of all() function when one or more elements evalaute to False:{}".format(all(list)))

 

# An empty iterable object

emptyList = []

print("Return value of all() function when the iterable object is empty:{}".format(all(emptyList)))

 

# An empty iterable object

validElemList = [10,20,30,40,50,60]

print("Return value of all() function when all the elements evaluate to True:{}".format(all(validElemList)))

 

Output of Python Example Program that uses the all() function:

Return value of all() function when one or more elements evalaute to False:False

Return value of all() function when the iterable object is empty:True

Return value of all() function when all the elements evaluate to True:True

 

 


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