Removing elements from list based on condition benchmark

test.py

#!/usr/bin/python3

"""
Results:
--- Remove if number is evenly dividable by 2
1.2708177
1.2841774
0.667672

--- Remove if number is evenly dividable by 3
1.3165607
1.1905327999999997
0.6251088999999999

--- Remove if number is evenly dividable by 4
1.2822456
1.0946345
0.6509212999999998
"""

def test1():
  x = list(range(1000))
  y = list(filter(lambda a: a % 4 != 0, x))
  x.clear()
  x.extend(y)

def test2():
  x = list(range(1000))
  for i, item in enumerate(x):
    if item % 4 == 0:
      x.pop(i)

def test3():
  x = list(range(1000))
  y = [a for a in x if a % 4 == 0]
  x.clear()
  x.extend(y)

if __name__ == '__main__':
  import timeit
  print(timeit.timeit("test1()", setup="from __main__ import test1", number=10000))
  print(timeit.timeit("test2()", setup="from __main__ import test2", number=10000))
  print(timeit.timeit("test3()", setup="from __main__ import test3", number=10000))