使用 Python 写入目录中的所有 *.txt 文件

Question

I want to write in all the files within a directory based on their extensions. I can write to a specific file but my goal is code that can write to all the *.txt files that are in a specific directory. With the following code I can list all text files and search for a file but as a beginner in Python I don't know how to write a sentence in all the *.txt files.

import glob
import os
directory=os.listdir(r'C:\Users\Lenovo\Desktop\z')

myfiles=glob.glob('*.txt')
print(myfiles)



def find_files(filename, search_path):
    result= []

    for root, dir, files in os.walk(search_path):
        if filename in files:
            result.append(os.path.join(root, filename))
            return result


print(find_files("zineb.txt",r"C:\Users\Lenovo\Desktop\z"))

Answer 1

In your example you should be able to just do the following:

textfiles = find_files("zineb.txt",r"C:\Users\Lenovo\Desktop\z")
for textfile in textfiles: # go over each file that it found
    with open(textfile, "a") as f: # open the textfile in mode append (hence the a) and have it be assigned to f
        f.write("a") # then write "a" to the file.

To do all of them:

for textfile in os.listdir():
    if textfile.endswith(".txt"):
        with open(textfile, "a") as f:
            f.write("a")