python函数特点NO.1

>>>def mylist(*L):
for x in L:
print(x)
>>>a=[1,2]
>>> b=[3]
>>>mylist(a,b)

>>> def change(a):
a[0]=1
>>> a=[2,3]
>>> change(a)
>>> a
[1, 3]
>>>

在python中都是对象，分为不可变对象和可变对象：

不可变对象：<span style="color:#333333;"><span style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px;  line-height: 19.5px; background-color: rgb(245, 245, 245);"><strong>int、</strong></span><span style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px;  line-height: 19.5px; background-color: rgb(245, 245, 245);"><strong>字符串(string)、float、（数值型number）、元组（tuple)</strong></span></span>

<span style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px;  line-height: 19.5px; background-color: rgb(245, 245, 245);"><strong><span style="color:#333333;">可变对象：<span style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; line-height: 19.5px;"><span style="background-color: rgb(245, 245, 245);">字典型(dictionary)、列表型(list)</span></span></span></strong></span>