python - 如何将以下函数应用于多个txt文件？

Question

您好，我的目录中有几个 txt 文件，我想将以下 python 函数应用于我的所有 txt 文件:

file = open('folder/testing.txt', 'r',encoding='utf-8') 
list_lines = []   
for line in file: 
    list_lines.append(line.replace('-\n', ' '))
list_lines2 = []    
for line in list_lines:
    list_lines2.append(line.replace('-\n', ''))
list_lines3 = []
for line in list_lines2:
    list_lines3.append(line.replace('\n', ''))
big_line = ''.join(list_lines3)
text_file=`open("folder/Output.txt", "w")`
print(big_line)
text_file.write(big_line)
text_file.close()
print('writing document')

为了实现这一目标，我尝试创建一个函数:

def change(document,encoding):
    file = open(document, 'r',encoding=encoding) 
    list_lines = []   
    for line in file: 
        #print(line.replace('\n', ' ').replace('\r', ''))
        list_lines.append(line.replace('-\n', ' '))
    list_lines2 = []    
    for line in list_lines:
        list_lines2.append(line.replace('-\n', ''))
    list_lines3 = []
    for line in list_lines2:
        list_lines3.append(line.replace('\n', ''))
    big_line = ''.join(list_lines3)
    text_file = open(document+'changed', "w")
    print(big_line)
    text_file.write(big_line)
    text_file.close()
    print('writing document')    

事实上，我的函数运行得很好，但是我有一个像这样的目录:

folder$ ls

file1.txt file2.txt file3.txt ... fileN.txt

因此，我希望感谢支持找到一种方法将我的函数应用于目录中所有以 txt 扩展名结尾的文档，感谢您的支持

Answer 1

使用 glob 将您的 change 函数应用于当前目录中以“.txt”结尾的每个文件非常容易:

import glob

for file in glob.glob("*.txt"):
    change(file, "utf-8")

虽然这不是问题，但我无法在不建议这个较短版本的 change 的情况下查看此代码:

def change(document,encoding):
    with open(document, 'r',encoding=encoding) as file:
        list_lines = [line.replace('-\n', ' ').replace('\n', '') for line in file]   
    big_line = ''.join(list_lines)
    print(big_line)
    with open(document+'changed', "w") as text_file:
        text_file.write(big_line)
    print('writing document')