Python 源码

想要每周课程Python源码的大聪明，

关注、私信up主，up给发送源码文件。

递归：

__author__ = "Alex Li"

def calc(n):

    print(n)

    if int(n/2) >0:

        return calc( int(n/2) )

    print("->",n)

calc(10)

高阶函数：

集合：

进度条：

__author__ = "Alex Li"

import sys,time

for i in range(20):

    sys.stdout.write("#")

    sys.stdout.flush()

    time.sleep(0.1)

文件修改：

__author__ = "Alex Li"

import sys

f = open("yesterday2","r",encoding="utf-8")

f_new = open("yesterday2.bak","w",encoding="utf-8")

find_str = sys.argv[1]

replace_str = sys.argv[2]

for line in f:

    if find_str in line:

        line = line.replace(find_str,replace_str)

    f_new.write(line)

f.close()

f_new.close()