(Python) timeit for getting filename without extension

gistfile1.py

import timeit

t = timeit.Timer(stmt="splitext(__file__)[0]", setup="from os.path import splitext")
print t.timeit()  # 2.1748800403

t = timeit.Timer(stmt="__file__[:-3]")
print t.timeit()  # 0.110901126177

t = timeit.Timer(stmt='__file__[:__file__.rindex(".")]')
print t.timeit()  # 0.387404180721

t = timeit.Timer(stmt="__file__.rsplit('.', 1)[0]")
print t.timeit()  # 0.469573551729

Things to note:

• Second method assumes filename has an extension with 2 characters
• using import os rather than from os.path import splitext increases time by ~8%
• using .lower() increases time by ~12%