不定参数
- 介绍
- 元组参数
- 字典参数
- 混合
介绍
- 不定参数用
*
和**
定义 - 不定参数必须在其他所有参数之后
- 例子:
os.path.join
方法就可以写入不定数量的参数
元组参数
- 定义:
*args
以*
作为参数前缀 - 会将传入的多个参数作为一个元组传入
代码
def fun(*args): for i in args: print i fun(‘a‘, ‘b‘, ‘c‘, ‘d‘) def fun2(arg1, arg2, *args): # 带2个固定参数 print ‘arg1:‘, arg1 print ‘arg2:‘, arg2 print ‘args:‘, args fun2(‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘)
字典参数
- 定义:
**kwargs
以**
作为参数前缀 - 会将传入的多个参数作为一个字典传入
代码
def fun(**kwargs): for key in kwargs: print key, kwargs[key] fun(a=‘arg1‘, b=‘arg2‘)
混合
代码
def fun(arg1, arg2, *args, **kwargs): print args print kwargs fun(‘a‘, ‘b‘, ‘c‘, ‘d‘, key1=‘e‘, key2=‘f‘)
本站文章为宝宝巴士 SD.Team原创,转载务必在明显处注明:(作者官方网站:宝宝巴士)
转载自【宝宝巴士SuperDo团队】 原文链接: http://www.cnblogs.com/superdo/p/4774247.html
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