## Filter Function
The filter function is similar to the map function. They both make use of a function and and a list. The filter function will pass every element of the given list into a function that returns a Boolean value. If the function returns True for a given element that element will be added to the new returned list. Otherwise it will not.
```python
def isAOne(x):
    return x == 1

nums = [1,1,6,7,8,0,1,1]

newList = list(filter(isAOne,nums))

# newList is [1,1,1,1]
```

Optional Parameters

Static & Class Methods

Map() Function

Filter() Function

Lambda Functions

Collections/Counter()

Collections/namedtuple()

Collections/Deque(deck)

This intermediate python tutorial covers the filter function in python. The filter function is useful for operations on lists.

Filter() Function

Subscribe to Tech with Tim

Filter Function

Join Tim's Coding Corner Newsletter