ToC

None

Use Map reduce to divide CPU intensive tasks:

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

Comprehensions

EXP for x in seq

With filter

EXP for x in seq if COND

You need to a assign it to a data structure:

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

Python functional

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

Generator expressions and list comprehensions: Perform an operation to every element, select a subset of elemnts that meet a condition.

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

You can select elements that meet a specific condition:

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

pyenv

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