這可能是一個(gè)簡(jiǎn)單的問(wèn)題,但我對(duì)

python和編程一般都是新手.

我正在研究一個(gè)簡(jiǎn)單的程序,在鏡像源位置的目錄結(jié)構(gòu)時(shí),將.mp3文件從一個(gè)位置復(fù)制/移動(dòng)到另一個(gè)位置.到目前為止我的工作,但它也在目標(biāo)位置創(chuàng)建新的文件夾,即使源文件夾不包含mp3文件.我只想創(chuàng)建新目錄,如果源包含.mp3s,否則它可能會(huì)導(dǎo)致目標(biāo)中的一堆空文件夾.

這是我到目前為止：

import os

import shutil #Used for copying files

##CONFIG

source_dir = "C:\Users\username\Desktop\iTunes\\" #set the root folder that you want to scan and move files from. This script will scan recursively.

destPath = "C:\Users\username\Desktop\converted From iTunes" #set the destination root that you want to move files to. Any non-existing sub directories will be created.

ext = ".mp3" #set the type of file you want to search for.

count = 0 #initialize counter variable to count number of files moved

##

##FIND FILES

for dirName, subdirList, fileList in os.walk(source_dir):

#set the path for the destination folder(s)

dest = destPath + dirName.replace(source_dir, '\\')

#if the source directory doesn't exist in the destination folder

#then create a new folder

if not os.path.isdir(dest):

os.mkdir(dest)

print('Directory created at: ' + dest)

for fname in fileList:

if fname.endswith(ext) :

#determine source & new file locations

oldLoc = dirName + '\\' + fname

newLoc = dest + '\\' + fname

if os.path.isfile(newLoc): # check to see if the file already exists. If it does print out a message saying so.

print ('file "' + newLoc + fname + '" already exists')

if not os.path.isfile(newLoc): #if the file doesnt exist then copy it and print out confirmation that is was copied/moved

try:

shutil.move(oldLoc, newLoc)

print('File ' + fname + ' copied.')

count = count + 1

except IOError:

print('There was an error copying the file: "' + fname + '"')

print 'error'

print "\n"

print str(count) + " files were moved."

print "\n"

所以如果文件夾結(jié)構(gòu)是這樣的：

root->

band 1->

album name->

song.m4a,

song2.m4a

現(xiàn)在它將在目標(biāo)driectory中創(chuàng)建所有這些文件夾,即使沒有.mp3s要復(fù)制…..

任何幫助表示贊賞！

我能想到的最簡(jiǎn)單的事情是你的現(xiàn)有代碼只是讓它跳過(guò)任何沒有任何.mp3文件的文件夾.這可以通過(guò)將以下項(xiàng)和if語(yǔ)句添加到循環(huán)頂部來(lái)輕松完成.

itertools.ifilter()和

fnmatch.fnmatch()功能可以一起使用,以簡(jiǎn)化對(duì)具有適當(dāng)擴(kuò)展名的文件的檢查.

from itertools import ifilter

from fnmatch import fnmatch

ext = '.mp3'

fnPattern = '*'+ext

for dirName, subdirList, fileList in os.walk(source_dir):

if not any(ifilter(lambda fname: fnmatch(fname, fnPattern), fileList)):

print ' skipping "{}"'.format(dirName)

continue

...

您還必須將代碼中的os.mkdir(dest)更改為os.makedirs(dest),以確保在需要將文件復(fù)制到目標(biāo)的相應(yīng)子分支時(shí)創(chuàng)建先前迭代跳過(guò)的所有子目錄.目錄.

您可以通過(guò)創(chuàng)建和保存可能具有擴(kuò)展名的匹配文件的空迭代器來(lái)稍微優(yōu)化一些事情,然后再次使用它來(lái)確定要復(fù)制的文件：

from itertools import ifilter

from fnmatch import fnmatch

ext = '.mp3'

fnPattern = '*'+ext

for dirName, subdirList, fileList in os.walk(source_dir):

# generate list of files in directory with desired extension

matches = ifilter(lambda fname: fnmatch(fname, fnPattern), fileList)

# skip subdirectory if it does not contain any files of interest

if not matches:

continue

...

... create destination directory with os.makedirs()

...

# copy each file to destination directory

for fname in matches:

... copy file

與50位技術(shù)專家面對(duì)面20年技術(shù)見證，附贈(zèng)技術(shù)全景圖

總結(jié)

以上是生活随笔為你收集整理的python移动文件中某个内容_如果python中的某些文件类型,则移动文件并创建目录...的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。