Any và all trong python

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Any and All are two built ins provided in python used for successive And/Or.

Any
Returns true if any of the items is True. It returns False if empty or all are false. Any can be thought of as a sequence of OR operations on the provided iterables.
It short circuit the execution i.e. stop the execution as soon as the result is known.

Syntax : any(list of iterables)

print (any([False, False, False, False]))

print (any([False, True, False, False]))

print (any([True, False, False, False]))

Output :

False
True
True

All
Returns true if all of the items are True (or if the iterable is empty). All can be thought of as a sequence of AND operations on the provided iterables. It also short circuit the execution i.e. stop the execution as soon as the result is known.

Syntax : all(list of iterables)

print (all([True, True, True, True]))

print (all([False, True, True, False]))

print (all([False, False, False]))

Output :

True
False
False

Practical Examples

list1 = []

list2 = []

for i in range(1,11):

    list1.append(4*i) 

for i in range(0,10):

    list2.append(list1[i]%5==0)

print('See whether at least one number is divisible by 5 in list 1=>')

print(any(list2))

Output:

See whether at least one number is divisible by 5 in list 1=>
True

list1=[]

list2=[]

for i  in range(1,21):

    list1.append(4*i-3)

for i in range(0,20):

    list2.append(list1[i]%2==1)

print('See whether all numbers in list1 are odd =>')

print(all(list2))

Output:

See whether all numbers in list1 are odd =>
True

Truth table :-

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