python 3.x shutil.copy FileNotFoundError [英] python 3.x shutil.copy FileNotFoundError

问题描述

系统 Windows 8.1 Python 3.4
反复获取 FileNotFound Errno2 ，试图复制目录中的所有文件.

system Windows 8.1 Python 3.4
Repeatedly get FileNotFound Errno2 , attempting to copy all files in a directory.

import os
import shutil
source = os.listdir("C:\\Users\\Chess\\events\\")
for file in source :
    shutil.copy(file, "E:\\events\\")

收益

FileNotFoundError : [Errno2] No such file or directory 'aerofl03.pgn'.

尽管 'aerofl03.pgn' 在源列表中是第一个 ['aerofl03.pgn', ...].如果添加一行，结果相同:

Although 'aerofl03.pgn' is first in the source list ['aerofl03.pgn', ...]. Same result if a line is added:

for file in source :
    if file.endswith('.pgn') :
        shutil.copy(file, "E:\\events\\")

编码结果相同

for file in "C:\\Users\\Chess\\events\\" :

我的 shutil.copy(sourcefile,destinationfile) 可以很好地复制单个文件.

My shutil.copy(sourcefile,destinationfile) works fine copying individual files.

推荐答案

os.listdir() 只列出没有路径的文件名.如果没有完整路径，shutil.copy() 会将文件视为相对于您当前工作目录的文件，并且您当前工作目录中没有 aerofl03.pgn 文件.

os.listdir() lists only the filename without a path. Without a full path, shutil.copy() treats the file as relative to your current working directory, and there is no aerofl03.pgn file in your current working directory.

再次添加路径以获取完整路径名:

Prepend the path again to get the full pathname:

path = "C:\\Users\\Chess\\events\\"
source = os.listdir(path)

for filename in source:
    fullpath = os.path.join(path, filename)
    shutil.copy(fullpath, "E:\\events\\")

所以现在 shutil.copy() 被告知复制 C:\Users\Chess\events\aerofl03.pgn，而不是 \aerofl03.pgn.

So now shutil.copy() is told to copy C:\Users\Chess\events\aerofl03.pgn, instead of <CWD>\aerofl03.pgn.

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