what if the list contains values like interger numbers in list like list1 = ['a', 'b', 'c', 'd',5,4,433,"fdff",44,2323] contains values like 5,4,433

You can do something like [i for i in list1 if type(i) == int] to select out the integers.

You can simply do:

list1=['a', 'b', 'c', 'd',5,4,433,"fdff",44,2323] 

list2=[a for a in list1 if isinstance(a, int)]

You could also try filter with isinstance:

print(list(filter(lambda x: isinstance(x, int), list_1)))

This will do.

[i for i in list1 if type(i) is int]

Or

[i for i in list1 if str(i).isnumeric()]