Python Numpy Tutorials： 函数

本文内容： 函数

# -*- coding: utf-8 -*-"""Python Version: 3.5Created on Mon May  8 21:01:40 2017E-mail: [e-mail]@author: DidiLv"""# function 1: def sign(x):    if x > 0:        return 'positive'    elif x < 0:        return 'negative'    else:        return 'zero'for x in [-1, 0, 1]:    print(sign(x))# Prints "negative", "zero", "positive"# function 2:def hello(name, loud=False):    if loud:        print('HELLO, %s!' % name.upper())    else:        print('Hello, %s' % name)hello('Bob') # Prints "Hello, Bob"hello('Fred', loud=True)  # Prints "HELLO, FRED!"