python基础入门---函数式编程

面向对象：---类---》class
面向过程：---过程---》def
函数式编程：---函数---》def

#函数
def fun1():
    """testing"""
    print("in the fun1")
    return 0
#过程
def fun2():
    """testing2"""
    print("in the fun2")

x = fun1()
y = fun2()

print("from fun1 return is %s" %x)
print("from fun2 return is %s" %y)

 

#无参数的函数
# def lo():
#     with open("test","a+") as f:
#         f.write('end action\n')
#
# def f1():
#     print("in the test1")
#     lo()
#
# def f2():
#     print("in the test2")
#     return 0
#
# def f3():
#     print("in the test3")
#     return 1,'hello',['qjh'],{'name':'jhq'}
#
# x = f1()
# y = f2()
# z = f3()
# print(x)
# print(y)
# print(z)



#有参数的函数
def t1(x,y,z):
    print(x)
    print(y)
    print(z)
# x = 1
# y = 2
#t1(y=2,x=1)#按自己的意愿赋值
#t1(1,2)#x,y是形参，1，2是实参
#t1(3,y=4,6)#这是错的，关键参数不能写在位置参数的前面 y=4是关键参数，6是位置参数

def t5(**kwargs):
    print(kwargs)
t5(name='qjh',age=23,sex='boy')