day03_03 函数

func_test1.py

__author__ = "Alex Li"
#函数
def func1():
"""testing1"""
print('in the func1')
return 0
#过程
def func2():
'''testing2'''
print('in the func2')

x=func1()
y=func2()

print('from func1 return is %s' %x)
print('from func2 return is %s' %y)

func_test2.py

__author__ = "Alex Li"
import time

def logger():
time_format = '%Y-%m-%d %X'
time_current = time.strftime(time_format)
with open('a.txt','a+') as f:
f.write('%s end action\n' %time_current)

def test1():
print('in the test1')
logger()

def test2():
print('in the test2')
logger()

def test3():
print('in the test3')
logger()

test1()
test2()
test3()

func_test3.py

__author__ = "Alex Li"
def test1():
pass

def test2():
return 0

def test3():
return 0,'hello',['a','b','c'],{'name':'alex'}

x=test1()
y=test2()
z=test3()

func_test4.py

__author__ = "Alex Li"
def test1():
print('in the test1')

def test2():
print('in the test2')
return 0
def test3():
print('in the test3')
return 1,'hello',['alex','wupeiqi'],{'name':'alex'}
#return test2


x=test1()
y=test2()
z=test3()
print(x)
print(y)
print(z)

func_test5.py

__author__ = "Alex Li"

def test(x,y,z):
print(x)
print(y)
print(z)

# test(y=2,x=1) #与形参顺序无关
# test(1,2) #与形参一一对应
#test(x=2,3)
test(3,z=2,y=6)

func_test6.py

__author__ = "Alex Li"

def conn(host,port=3306):
pass

def test(x,y=2):
print(x)
print(y)

test(1,3)

'''
#默认参数特点：调用函数的时候，默认参数非必须传递
#用途：
1.默认安装
2.默认设置，数据库的端口
'''

func_test7.py

__author__ = "Alex Li"

'''
#*args:接受N个位置参数，转换成元组形式
def test(*args):
print(args)

test(1,2,3,4,5,5)
test(*[1,2,4,5,5])# args=tuple([1,2,3,4,5])

print(test())

#传递不固定个数参数
def test1(x,*args):
print(x)
print(args)

test1(1,2,3,4,5,6,7)
'''

'''
#**kwargs：接受N个关键字参数，转换成字典的方式
def test2(**kwargs):
print(kwargs)
print(kwargs['name'])
print(kwargs['age'])
print(kwargs['sex'])

test2(name='alex',age=8,sex='F')
test2(**{'name':'alex','age':8,'sex':'F'})


def test3(name,**kwargs):
print(name)
print(kwargs)

test3('alex')
test3('alex',age=18,sex='m')

'''

'''
def test4(name,age=18,**kwargs):
print(name)
print(age)
print(kwargs)

test4('alex',age=34,sex='m',hobby='tesla')
'''

# def test4(name,age=18,*args,**kwargs):
def test4(*args,**kwargs):
# print(name)
# print(age)
print(args)
print(kwargs)
logger("TEST4") #函数的调用


def logger(source):
print("from %s" % source)

test4('alex',age=34,sex='m',hobby='tesla') #函数的定义在调用之前