pype.py

#!/bin/python -u
import os, sys, time, math

local = ['alns', 'lns', 's']

#pipe collectors
alns = ''
lns = []
s = None

#pipe catching
while True:
    line = sys.stdin.readline()
    if line:
        lns.append(line)
        alns += line
        s = line
    else:
    	break
    	#time.sleep(1) #wait for others

#some shortcuts
def o(smthng):
	sys.stdout.write(str(smthng))
	sys.stdout.flush()

local += ['o']


ret = eval(sys.argv[1]) or ''
o(ret)

sys.stdout.close()
sys.stdin.close()
#use it from sh like:
# ls | python pype.py "', '.join(map(lambda x: x[:-1], lns))" #gets all files, separated by comma