【python】文件的输入和输出

# encoding:utf-8
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Created on 2014-6-5

@author: Administrator
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import os

if __name__ == "__main__":
    for tempdir in (‘/tmp‘, r‘c:\temp‘):
        if os.path.isdir(tempdir):
            break
        
    else:
        print "no temp directory is available"
        tempdir = ‘‘
    
    if tempdir:
        os.chdir(tempdir)
        cwd = os.getcwd()
        print "***current temporary directory***"
        print cwd
        
        print "***creating example directory..."
        os.mkdir("example")
        os.chdir("example")
        cwd = os.getcwd()
        print "***new working directory..."
        print cwd
        
        print "***original directory listing:"
        print os.listdir(cwd)
        
        print "***creating test file"
        fobj = open("test", "w")
        fobj.write("%s%s" % ("line1", os.linesep))
        fobj.write("%s%s" % ("line2", os.linesep))
        fobj.close()
        
        print "***updating directory listing:"
        print os.listdir(cwd)
        
        print "***renaming test to filetest.txt"
        os.rename("test", "filetest.txt")
        
        print "***updating directory listing:"
        print os.listdir(cwd)
        
        path = os.path.join(cwd, os.listdir(cwd)[0])
        print "***full file pathname:"
        print path
        
        print "***(pathname,basename)="
        print os.path.split(path)
        print "***(filename,extension)="
        print "***basename:", os.path.basename(path)
        print os.path.splitext(os.path.basename(path))
        
        print "***displaying file contents:"
        fobj = open(path)
        for eachline in fobj:
            print eachline
        fobj.close()
        
        print "***deleting test file"
        os.remove(path)
        print "***updating directory listing:"
        print os.listdir(cwd)
        
        print "deleting test directory"
        os.chdir(os.pardir)
        os.rmdir("example")
        
        print "***Done!"
        
        name = raw_input(u"请输入名字：".encode("gbk"))
        count=1;
        for mytuple in os.walk(name, True):
            print "%s:%s" %(count,mytuple[0])
            count=count+1
            print "%s:%s" %(count,mytuple[1])
            count=count+1
            print "%s:%s" %(count,mytuple[2])
            count=count+1

"""文件目录深度遍历"""
def listdir(mydir, myfile):
    global fmt
    global filenum
    lists = os.listdir(mydir)  # 列出目录下的所有文件和目录
    for line in lists:
        filepath = os.path.join(mydir, line)
        if os.path.isdir(filepath):  # 如果filepath是目录，则再列出该目录下的所有文件
            myfile.write(fmt + line.decode("gbk") + ‘\\‘ + ‘\n‘)
            print fmt + line.decode("gbk") + ‘\\‘ + ‘\n‘,
            filenum = filenum + 1
            
            # 格式化输出目录
            tmp = fmt
            fmt = fmt + 4 * "-"
            listdir(filepath, myfile)
            fmt = tmp
        else:  # 如果filepath是文件，直接列出文件名
            myfile.write(fmt + line.decode("gbk") + ‘\n‘)  # 显示中文文件
            print fmt + line.decode("gbk") + ‘\n‘,
            filenum = filenum + 1


if __name__ == ‘__main__‘:
    mydir = raw_input(‘please input the path:‘)
    listfile = open(‘listfile.txt‘, ‘w‘)
    listfile.write(str(mydir).decode("gbk") + ‘\n‘)
    listdir(str(mydir), listfile)
    listfile.write(‘all the file num is ‘ + str(filenum))
    listfile.close()

E:\KuGou
----Beyond - 不再犹豫.mp3
----Beyond - 喜欢你.mp3
----Beyond - 无尽空虚.mp3
----Beyond - 海阔天空.mp3
----Beyond - 谁伴我闯荡.mp3
----Beyond、黄家驹 - 海阔天空.m4a
----Cache--------3eb439fd4096a2b76ae8c1020f6c4007.kg!
----Lyric--------Beyond - 不再犹豫-2bcba2349cd515bf1110613c9a44acf9.krc
--------Beyond - 光辉岁月-4dc283c7ac7bd5d9bf9b72f167d4ec7d.krc
--------Beyond - 喜欢你-a48d906b0210cefc2d5d12353d3e7488.krc
--------Beyond - 无尽空虚-6ade279c2a7da6ce893e581ff22f7817.krc
--------Beyond - 海阔天空-f87ab6af058e9c5864a81a78e9f62967.krc
--------吴雨霏 - 今夜烟花灿烂-5810060a70bf1f583f92eb5d541d65e4.krc
--------周华健 - 让我欢喜让我忧-71c82c68ebab8ca9f97f460e7e8a58fa.krc
----Temp--------1d4182a7b02d9ea3185ddbbdece48473.kgtemp
--------2bcba2349cd515bf1110613c9a44acf9.kgtemp
--------4dc283c7ac7bd5d9bf9b72f167d4ec7d.kgtemp
----五月天 - 我不愿让你一个人.mp3
----刘德华 - 一起走过的日子.mp3
----刘德华 - 冰雨.mp3
----刘德华 - 北国之春.mp3
all the file num is 96

"""文件目录广度遍历"""
def walkdir(mydir,fileinfo,topdown=True):
    for root, dirs, files in os.walk(mydir, topdown):
        for name in files:
            print(name)
            fileinfo.write(name + ‘\n‘)
        for name in dirs:
            print(os.path.join(name))
            fileinfo.write(os.path.join(root,name) + ‘\n‘)


if __name__ == ‘__main__‘:
  mydir = raw_input(‘please input the path:‘)
  walkfile = open(‘walkfile.txt‘, ‘w‘)
  walkfile.write(str(mydir).decode("gbk") + ‘\n‘)
  walkdir(str(mydir), walkfile)
  walkfile.close()