文件操作（读取、切割、查找、归并）

[python]代码库

import codecs
def readfile(filepath):#文件读取
    file = codecs.open(filepath, "r")
    biglist = file.read()
    print(type(biglist))
    for list in biglist:
        print(biglist)
    file.close()
#####################################################################################################
def qgfile(filepath):#文件切割
    fileopen=open(filepath, "rb")
    num=10
    filelist=[]
    for i in range(num):
        savepath="E:\\学习\\Python\\学习资料\\零散\\YinchengDay5\\data\\"+"data"+str(i+1)+".txt"
        filesave=open(savepath,"wb")
        filelist.append(filesave)
        print(filelist)
        i = 0
        for line in fileopen:
            filelist[i % num].write(line)
            i += 1
        fileopen.close()
        for i in range(num):
            filelist[i].close()  # 关闭文件
#######################################################################################################
def findfile():#文件查找
    #读取文件
    print("查找开始。。。")
    filepath="E:\\学习\\Python\\学习资料\\零散\\YinchengDay5\\data\\1.txt"
    file=open(filepath,"r")
    filestr=file.readlines()
    #存入文件
    file163path = "E:\\学习\\Python\\学习资料\\零散\\YinchengDay5\\data\\163.com.txt"
    filenot163path="E:\\学习\\Python\\学习资料\\零散\\YinchengDay5\\data\\其它邮箱.txt"
    filesave = open(file163path, "w")
    filesave_QT=open(filenot163path,"w")
    i = 0
    while i < len(filestr):
        if filestr[i].find("163.com") > -1:
            filesave.write(filestr[i])
            i += 1
        else:
            filesave_QT.write(filestr[i])
            i += 1
    filesave.close()
    file.close()
    print("查找结束。。。")
#######################################################################################################
def   merge(mylist1,mylist2): # 文件归并
    mylistall=[]
    i1=0
    i2=0
    while  i1< len(mylist1) and  i2 <len(mylist2)>0:  #有一个结束，没有必须要对比
        if  mylist1[i1] <mylist2[i2]: #谁大选谁
            mylistall.append(mylist1[i1])
            i1+=1  #下标移动
        elif mylist1[i1] >mylist2[i2]:
            mylistall.append(mylist2[i2])
            i2+=1  #下标移动
        else:
            mylistall.append(mylist2[i2])
            i1+=1
            i2+=1
    while  i1<len(mylist1):  #粘贴尾部
        mylistall.append(mylist1[i1])
        i1+=1
    while i2 < len(mylist2):
        mylistall.append(mylist2[i2])
        i2 += 1
    return  mylistall

bigfilepath=r"E:\学习\Python\学习资料\零散\YinchengDay5\mail.txt"
#readfile(bigfilepath)
#qgfile(bigfilepath)
findfile()