55 lines
834 B
Python
55 lines
834 B
Python
|
"""
|
||
|
|
|
||
|
|
函数的参数
|
||
|
|
- 默认参数
|
||
|
|
- 可变参数
|
||
|
|
- 关键字参数
|
||
|
|
- 命名关键字参数
|
||
|
|
|
||
|
|
Version: 0.1
|
||
|
|
Author: 骆昊
|
||
|
|
Date: 2018-03-05
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
# 参数默认值
|
||
|
|
def f1(a, b=5, c=10):
|
||
|
|
return a + b * 2 + c * 3
|
||
|
|
|
||
|
|
|
||
|
|
print(f1(1, 2, 3))
|
||
|
|
print(f1(100, 200))
|
||
|
|
print(f1(100))
|
||
|
|
print(f1(c=2, b=3, a=1))
|
||
|
|
|
||
|
|
|
||
|
|
# 可变参数
|
||
|
|
def f2(*args):
|
||
|
|
sum = 0
|
||
|
|
for num in args:
|
||
|
|
sum += num
|
||
|
|
return sum
|
||
|
|
|
||
|
|
|
||
|
|
print(f2(1, 2, 3))
|
||
|
|
print(f2(1, 2, 3, 4, 5))
|
||
|
|
print(f2())
|
||
|
|
|
||
|
|
|
||
|
|
# 关键字参数
|
||
|
|
def f3(**kw):
|
||
|
|
if 'name' in kw:
|
||
|
|
print('欢迎你%s!' % kw['name'])
|
||
|
|
elif 'tel' in kw:
|
||
|
|
print('你的联系电话是: %s!' % kw['tel'])
|
||
|
|
else:
|
||
|
|
print('没找到你的个人信息!')
|
||
|
|
|
||
|
|
|
||
|
|
param = {'name': '骆昊', 'age': 38}
|
||
|
|
f3(**param)
|
||
|
|
f3(name='骆昊', age=38, tel='13866778899')
|
||
|
|
f3(user='骆昊', age=38, tel='13866778899')
|
||
|
|
f3(user='骆昊', age=38, mobile='13866778899')
|