python - 使用 FileField 时出现 "unindent does not match any outer indentation level"

Question

class FileUploadModel(models.Model):
    title = models.CharField(max_length=50)
    uploaded_file = models.FileField(upload_to = 'bose')

错误:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 231, in execute
    self.validate()
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 266, in validate
    num_errors = get_validation_errors(s, app)
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/validation.py", line 30, in get_validation_errors
    for (app_name, error) in get_app_errors().items():
  File "/usr/local/lib/python2.6/dist-packages/django/db/models/loading.py", line 158, in get_app_errors
    self._populate()
  File "/usr/local/lib/python2.6/dist-packages/django/db/models/loading.py", line 64, in _populate
    self.load_app(app_name, True)
  File "/usr/local/lib/python2.6/dist-packages/django/db/models/loading.py", line 88, in load_app
    models = import_module('.models', app_name)
  File "/usr/local/lib/python2.6/dist-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/home/bose/DJANGO/blog/blog/models.py", line 22
    uploaded_file = models.FileField(upload_to = 'bose')

IndentationError: unindent does not match any outer indentation level

我哪里错了？

Answer 1

好吧，如果您将代码直接复制到编辑框中，那么您的问题就是混用了制表符和空格。问题来源中的 title 行前面有一个制表符，而下一行前面有四个空格。

参见 this question及其答案以获取更多信息。如果您希望 Python 在您混合使用制表符和空格时发出警告，您可以使用 -t 选项。