python prog.py -func func2"

from __future__ import division
import numpy as np
import argparse

parser = argparse.ArgumentParser(description='')
parser.add_argument('-func', help='')
args = parser.parse_args()
func_type = globals()[args.func]()

def func1():
    print "something1"
def func2():
    print "something2"
def func3():
    print "something3"

func_type()

KeyError: 'func2'