# 指明编码

f = open("sisi", encoding="utf-8")

# 读

data = f.read()

print(data)

# 写

f.write("思思")

print(data)

# 一行行读

f.readline()

# 文件关闭

f.close()

def func1():

    print("in the func1...")

    return 

def func2():

    print("in the func2...")

x = func1()

y = func2()

def fun3(x, y):

    print(x + y)

    return  x+y

print(fun3(,))

# 函数不返回值默认是None

def calc(n):

    print(n)

    if int(n/) > :

        return  calc(int(n/))

    print(n)

calc()