def get_paths():
    return []
def get_inpus():
    return []
pool = Pool(4)
paths = pool.map(get_paths, get_input())

EXP for x in seq

EXP for x in seq if COND 

x = [COMP] # list
set(COMP) lis(COMP) str(COMP) iter(COMP)

iter(obj)
next()
list(iter), tuple(iter) -> converts iterator to list

iter = (elem.func() for elem in list)
list = [elem.func() for elem in list]

list = [elem.func() for elem in list
if elem != ""]

$ mkdir foo ;\
virtualenv foo ;\
cd foo ;\
source ./bin/activate ;\
pip install bar ;\
python baz.py ;\
deactivate