The ** filter()** method filters the given sequence of elements with the help of a function that tests each element in the sequence to be true or not.

**Syntax:**

**filter(function, sequence)**

**Parameters:**

**function**: the function that tests if each element of a sequence true or not.**sequence**: the sequence which needs to be filtered. It can be any iterable object such as sets, lists, tuples, or containers.

**Returns:** The method returns an iterator that is already filtered.

**Example **– Filter a Python List with filter()

```
def even(x):
if x%2==0:
return True
else:
return False
# creating a list in Python
mylist= [3,5,1,5,7,8,2,6]
# using filter function to find even numbers
filtered = filter(even, mylist)
print('The even numbers are:')
for s in filtered:
print(s)
```

**Output**

```
The even numbers are:
8
2
6
```

## Example – Python Filter List with Lambda

Alternatively, we can use a lambda function statement to create the function to pass it as an argument to the** filter()** method.

```
# creating a list in Python
mylist= [3,5,1,5,7,8,2,6]
#filter all the odd numbers using list Comprehension
result = [x for x in mylist if x%2!=0]
print('The odd numbers are ',list(result))
#filter all the even numbers using list Comprehension
result = [x for x in mylist if x%2==0]
print('The even numbers are ',list(result))
```

**Output**

```
The odd numbers are [3, 5, 1, 5, 7]
The even numbers are [8, 2, 6]
```

## Example – Filter with List Comprehension

The best way to filter the list elements is using the list comprehension statement ** [x for x in list if condition]**. The condition can be replaced with any function which can be used as a filtering condition.

```
# creating a list in Python
mylist= [3,5,1,5,7,8,2,6]
#filter all the odd numbers using lambda
result = filter(lambda x: x % 2 != 0, mylist)
print('The odd numbers are ',list(result))
#filter all the even numbers using lambda
result = filter(lambda x: x % 2 == 0, mylist)
print('The even numbers are ',list(result))
```

**Output**

```
The odd numbers are [3, 5, 1, 5, 7]
The even numbers are [8, 2, 6]
```