從多個文件讀取/寫入文本到主文件

Question

在下面的代碼中，我試圖打開一系列文本文件並將其內容復制到一個文件中。 我在“ os.write（out_file，line）”上遇到錯誤，它要求我輸入一個整數。 我沒有定義“線”是什么，那是問題嗎？ 我是否需要以某種方式指定“行”是來自in_file的文本字符串？ 另外，我通過for循環的每次迭代打開out_file。 那不好嗎？ 我一開始應該打開一次嗎？ 謝謝！

import os
import os.path
import shutil

# This is supposed to read through all the text files in a folder and
# copy the text inside to a master file.

#   This defines the master file and gets the source directory
#   for reading/writing the files in that directory to the master file.

src_dir = r'D:\Term Search'
out_file = r'D:\master.txt'
files = [(path, f) for path,_,file_list in os.walk(src_dir) for f in file_list]

# This for-loop should open each of the files in the source directory, write
# their content to the master file, and finally close the in_file.

for path, f_name in files:
    open(out_file, 'a+')
    in_file = open('%s/%s' % (path, f_name), 'r')
    for line in in_file:
        os.write(out_file, line)
    close(file_name)
    close(out_file)

print 'Finished'

Answer 1

你這樣做是錯的：

您做了：

open(out_file, 'a+')

但這不會將引用另存為變量，因此您無法訪問剛剛創建的文件對象。 你需要做什么：

out_file_handle = open(out_file, 'a+')
...
out_file_handle.write(line)
...
out_file_handle.close()

或者，更Python化地：

out_filename = r"D:\master.txt"
...
with open(out_filename, 'a+') as outfile:
    for filepath in files:
        with open(os.path.join(*filepath)) as infile:
            outfile.write(infile.read())

print "finished"