2019-05-24：文件操作练习

#encoding=utf-8
"""
遍历指定目录下的所有文件，找出其中占用空间最大的前3个文件
"""
import os
def searchMaxFiles(path):
    os.chdir(path)
    docsAndFiles=os.listdir(path)
    fileSizes=[]
    fileDicts={}

    for file in docsAndFiles:
        if os.path.isfile(file):
            fileSizes.append(os.path.getsize(file))
            fileDicts[os.path.getsize(file)]=file
    for i in range(len(fileSizes)-1):
        for j in range(len(fileSizes)-i-1):
            if fileSizes[j]>fileSizes[j+1]:
                fileSizes[j],fileSizes[j+1] =fileSizes[j+1],fileSizes[j]
    print("文件大小列表:%s\n文件字典:%s"%(fileSizes,fileDicts))
    for size in fileSizes[len(fileSizes):len(fileSizes)-4:-1]:
        if size in fileDicts.keys():
            print("文件的的大小:%s文件名称:%s"%(size,fileDicts[size]))
print(searchMaxFiles("e:\\murphy\\file"))

#encoding=utf-8

"""
过滤py源码中的#注释，另存为文件result.py，并执行result.py，断言是否执行成功
"""
import os
def filterAndOperation(path):
    fp=open(path,"r",encoding="utf8")
    for line in fp:
        #print(line)
        if not line.startswith("#"):
            if "#" in line:
                temp=[]
                temp=list(line)
                wLine=""
                order=line.index("#")
                wLine="".join(temp[:order])
                #print(wLine)
                #print(wLine)
                with open("e:\\murphy\\file\\result.py","a",encoding="utf8") as fpro:
                    fpro.write(wLine+"\n")
            else:
                with open("e:\\murphy\\file\\result.py","a") as fpro:
                    fpro.write(line)

    fp.close()
    os.chdir("e:\\murphy\\file")
    os.system("python result.py > result.txt")
    with open("e:\\murphy\\file\\result.txt","r",encoding="utf8") as fpro1:
        print(fpro1.readlines())
print(filterAndOperation("e:\\murphy\\file\\area.py"))