重拾Python 十八

先簡單瞭解下函數，函數的參數，ex18.py：

#!/usr/bin/python                                                                                                
# -*- coding: utf-8 -*-

def print_two(*args):
    arg1, arg2 = args
    print "arg1: %r, args2: %r" %(arg1,arg2)

def print_two_again(a1, a2):
    print "a1: %r, a2: %r" %(a1,a2)

def print_one(p1):
    print "p1: %r" %p1 

def print_none():
    print "I got nothing."

print_two('x1','x2')
print_two_again('y1','y2')
print_one('z1')
print_none()

運行命令：

python ex18.py

有結果：

arg1: 'x1', args2: 'x2'
a1: 'y1', a2: 'y2'
p1: 'z1'
I got nothing.