import itertools
from itertools import groupby as uniq
import numpy

itertools.groupby("AAASDAADSD")
uniq("AAAAA")

import os
os.mkdir("foo")
os.path.exists("foo")
import os.path
import os.path.exists as file_is_there
os.path.exists("foo")
file_is_there("bar")
file_is_there("baz")

numpy.exp([numpy.pi])

