将 FOR 循环输出附加到列表 PYTHON

Question

我只是想将 for 循环的输出写入 txt 文件

for filename in glob.glob('/home/*.txt'):
    file_metadata = { 'name': 'files.txt', 'mimeType': '*/*' }
    media = MediaFileUpload(filename, mimetype='*/*', resumable=True)
    file = drive_service.files().create(body=file_metadata, media_body=media, fields='id').execute()
    links = []
    links.append(file.get('id'))
    with open("ids.txt", "w") as file:
        for e in links:
            file.write(str(e))
            file.close()

Answer 1

您需要在单独的循环中写入文件，而不是嵌套循环，或者只是完全删除嵌套循环。 您还应该with open()删除close() ，它会在写入文件完成后处理关闭

with open("ids.txt", "w") as f:
    for filename in glob.glob('/home/*.txt'):
        file_metadata = { 'name': 'files.txt', 'mimeType': '*/*' }
        media = MediaFileUpload(filename, mimetype='*/*', resumable=True)
        file = drive_service.files().create(body=file_metadata, media_body=media, fields='id').execute()
        f.write(f'{file.get("id")}\n')
        # or if your Python version is older than 3.6
        f.write(str(file.get("id")) + '\n')

Answer 2

您不应将同一个变量file用于两个不同的目的。 你不应该close()你with open() as ..任何东西with open() as .. ：

links = []
for filename in glob.glob('/home/*.txt'):
    file_metadata = { 'name': 'files.txt', 'mimeType': '*/*' }
    media = MediaFileUpload(filename, mimetype='*/*', resumable=True)
    file = drive_service.files().create(body=file_metadata, media_body=media, fields='id').execute()
    links.append(file.get('id'))

with open("ids.txt", "w") as fout:
    fout.write('\n'.join(links))