**List example.** Here we use filter with the list type. Almost all Python programs use lists, so this is a good place to start. We use the lambda keyword.

Lambda**Result:** The filter() built-in does not return another list. It returns an iterator. We can use the list() function to create a new list.

List**Python program that uses filter**
numbers = [10, 20, 0, 0, 30, 40, -10]*
# Filter out numbers equal to or less than zero.
*result = list(__filter__(lambda n: n > 0, numbers))
print(result)
**Output**
[10, 20, 30, 40]

**Range example.** The filter() method can be used with a range as the second argument. Here we have a range from 0 through 9 inclusive. We then call filter on this range.

**Lambda:** The lambda receives each value in the range and names it "x." If it is evenly divisible by 2, it returns true.

Range**So:** The lambda filters out all numbers that are not evenly divisible by 2 (all odd numbers). We are left with even numbers.

**Python program that uses filter with range**
*# Use a range with filter.
# ... Return true in lambda if number is even.
# Even numbers are all evenly divisible by 2.
# We then print all even numbers in the range with filtering.
*for value in __filter__(lambda x: x % 2 == 0, range(0, 10)):
print(*"EVEN NUMBER IN RANGE:"*, value);
**Output**
EVEN NUMBER IN RANGE: 0
EVEN NUMBER IN RANGE: 2
EVEN NUMBER IN RANGE: 4
EVEN NUMBER IN RANGE: 6
EVEN NUMBER IN RANGE: 8