filter() in python
The filter() method filters the given sequence with the help of a function that tests each element in the sequence to be true or not.
filter(function, sequence) Parameters: function: function that tests if each element of a sequence true or not. sequence: sequence which needs to be filtered, it can be sets, lists, tuples, or containers of any iterators. Returns: returns an iterator that is already filtered.
The filtered letters are: e e
It is normally used with Lambda functions to separate list, tuple, or sets.
[1, 3, 5, 13] [0, 2, 8]
Please refer Python Lambda functions for more details.