Python__面向过程编程，,面向过程：核心是面向

Python__面向过程编程，,面向过程：核心是面向

面向过程：核心是面向过程，过程即解决问题的步骤，基于面向过程去设计程序，就像是在设计流水线

#优点：程序结构清晰，可以把复杂的问题简单化，流程化
#缺点：可扩展性差，一条流水线只是用来解决一个问题
os模块功能展示：

#Author wangmengzhu#装饰器def init(func):    def wrapper(*args,**kwargs):        g = func(*args,**kwargs)        next(g)        return g    return wrapper#第一阶段，找到所有文件的绝对路径import os@initdef search(target):    while True:        filepath = yield        g = os.walk(filepath)        for dirpath,_,files in g:            for file in files:                abspath = r‘%s\%s‘%(dirpath,file)                target.send(abspath)#第二阶段，打开文件@initdef opener(target):    while True:        abspath = yield        with open(abspath) as f:            target.send((abspath,f))#第三阶段，循环读出每一行的内容@initdef cat(target):    while True:        abspath,f = yield        for line in f:            res = target.send((line,abspath))            if res:                break#第四阶段，过滤@initdef grep(pattern,target):    tag = False    while True:        line,abspath = yield tag        tag = False        if pattern in line:            target.send(abspath)            tag = True#第五阶段@initdef printer():    while True:        abspath = yield        print(abspath)g = search(opener(cat(grep(‘error‘,printer()))))g.send(r‘C:\Users\wangmengzhu\PycharmProjects\MZ\a‘)

Python__面向过程编程