Can any one explain filter function in python?

Answer 1

It just removes all the elements from a list that don't match the condition!

x = [1,2,3,4,5,6,7,8,9,10]
# instead of using for loop and if conditions! You can easily extract a list having only the even elements!
# x = list(filter(condition, listname))
# if the condition is true then it will add on to the newly filtered list
# don't forget to add that list function because filter returns a generator and we want a list
x = list(filter(lambda i: i%2==0, x))
print(x)
output: [2,4,6,8,10]

Click here to get more info about maps and filters
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2461/

Answer 2

python

Answer 3

'filter' is a function that takes two arguments :
- a predicate (function that returns True or False)
- an iterable element (it can be a list, a tuple, a range object, a map object)
'filter' returns an iterable 'filter' object.

filter(predicate, iterable) -> filter_obj

For each element n of the iterable object, filter yields this element if and only if 'predicate(n)' is True.