sigmoid.py

#-*- coding: utf-8 -*-

from math import *
import sys

def sigmoid(x):
    return (1 / (1+exp(-x)))

def main():
    argvs = sys.argv
    argc = len(argvs)

    if argc != 2:
        print 'Usage: python %s <parameter for sigmoid function>' % argvs[0]
        quit()

    x = int(argvs[1])
    y = sigmoid(x)

    print 'sigmoid(%d) = %f' %(x, y)
        
if __name__ == '__main__':
    main()