看代码学编程之python3函数
#!/usr/bin/env python# -*- coding:utf-8 -*-# 返回值def f1():return 'sds'print(f1())# 返回列表def f1():return ['sds', 'dsfrsdf', 1313]print(f1())# 返回元组def f1():return 3, 4, 5, '2222', 'r
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#!/usr/bin/env python
# -*- coding:utf-8 -*-
# 返回值
def f1():
return 'sds'
print(f1())
# 返回列表
def f1():
return ['sds', 'dsfrsdf', 1313]
print(f1())
# 返回元组
def f1():
return 3, 4, 5, '2222', 'rewrew'
print(f1())
# 多个返回值则返回元组
def f1():
return 3, 4, 5, ['sds', 'dsfrsdf', 1313]
print(f1())
# 返回元组
def f1():
return (3, 4, 5, ['sds', 'dsfrsdf', 1313])
print(f1())
# 单个返回值,返回原类型
def f1():
return {'name': 'yonge', 'age': 20}
print(f1())
# 传参
def f1(x, *args):
print(args) # (3,4,5,6)
f1(1, 3, 4, 5, 6)
def f1(x, *args):
print(args) # ([3, 4, 5, 6],) 原样输出
# 传字典
f1(1, [3, 4, 5, 6])
def f1(x, *args):
print(args) # (3, 4, 5, 6) #迭代输出
f1(1, *[3, 4, 5, 6])
#传key=value
def f1(x, **kwargs):
print(kwargs) # {'a': 1, 'b': 2, 'c': 3}#转成字典输出
f1(1, a=1,b=2,c=3)
#传字典
def f1(x, **kwargs):
print(kwargs) #{'a': 1, 'b': 4, 'c': 5, 'd': 6} #迭代输出
f1(1, **{'a':1, 'b':4, 'c':5, 'd':6})
#传字典
def f1(x, **kwargs):
print(kwargs) #{'a': 1, 'b': 4, 'c': 5, 'd': 6} #迭代输出
#f1(1, {'a':1, 'b':4, 'c':5, 'd':6})#报错
#传任何参数
def f1(x,*args,**kwargs):
print(kwargs) #{'y': 22323, 'a': 1, 'b': 4, 'c': 5, 'd': 6} #key=valu和字典参数,合并迭代输出字典
print(args) #(2, 3, 5)
f1(1, 2,3,5,y=22323,**{'a':1, 'b':4, 'c':5, 'd':6})
#变量用域之全局global
name = 'lee'
def test():
name = 'yongge'
print(name) #yongge
def test1():
global name
print(name) #lee
test1()
test()
def test2():
name='666'
print(name) #666
def test3():
name = 'lee'
test3()
print(name) # 666
test2()
#变量用域之上一级
def test2():
name='666'
print(name) #666
def test3():
nonlocal name
name = 'lee'
test3()
print(name) #lee
test2()
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