python/process-oriented programming ideas and examples

Python Basics-process-oriented programming ideas and examples

Process-oriented programming ideas

1, process-oriented programming ideas and examples

When writing a program:

To think about features first, step through the implementation of

2. File path in walk output directory in OS module

The Os.walk () method is used to go through the directory tree to output the file name in the directory, up or down.

Send can pass multiple values, but must be a tuple type

Process-oriented programming ideas

Like pipelining, code simplicity, architecture

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实现对一个目录下面（包含子目录下面）有一行包含过滤字符串就输出其文件名的绝对路径  C:\python_fullstack_wen\day24\wen"""import time,os#定义def init(func):    "装饰器"    def wrapper(*args,**kwargs):        res=func(*args,**kwargs)        next(res)        return res    return wrapper@initdef search(target):    "找到目录下所有文件名的绝对路径"    while True:        dir_path=yield        g=os.walk(dir_path)        for i in g:            for j in i[-1]:                file_path="%s\\%s"%(i[0],j)                target.send(file_path)@initdef opener(target):    "打开文件，返回文件句柄"    while True:        file_path=yield        with open(file_path) as f:            target.send((file_path,f))@initdef cat(target):    "查看文件，返回每行内容"    while True:        file_path,f=yield        for line in f:            target.send((file_path,line))@initdef grep(pattern,target):    "过滤这行，如果符合返回文件路径"    while True:        file_path,line=yield        if pattern in line:            target.send(file_path)@initdef printer():    "打印"    while True:        file_path=yield        print(file_path)#调用g=search(opener(cat(grep("wenyanjie",printer()))))g.send("C:\python_fullstack_wen\day24\wen")

Simple way to implement the above program

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import osdef search(dir_name, partten):    g = os.walk(dir_name)    for i in g:        for j in i[-1]:            file_path = i[0] + "\\" +j            with open(file_path) as f:                for line in f:                    if partten in line:                        print(file_path)search("c:\\test", "python")

python/process-oriented programming ideas and examples