flask_uploads: ImportError: cannot import name 'secure_filename'

问题

I want to create a form that allows to send a picture with a description using flask forms. I tried to use this video: https://www.youtube.com/watch?v=Exf8RbgKmhM

but I had troubles when launching app.py:

➜  website git:(master) ✗ python3.6 app.py
Traceback (most recent call last):
  File "app.py", line 10, in <module>
    from flask.ext.uploads import UploadSet, configure_uploads, IMAGES
ModuleNotFoundError: No module named 'flask.ext'

I had to replace flask.ext.uploads by flask_uploads but now I get:

Traceback (most recent call last):
  File "app.py", line 10, in <module>
    from flask_uploads import UploadSet, configure_uploads, IMAGES
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/flask_uploads.py", line 26, in <module>
    from werkzeug import secure_filename, FileStorage
ImportError: cannot import name 'secure_filename'

My imports and config looks like this:

from datetime import datetime
from flask_sqlalchemy import SQLAlchemy
from flask import Flask, session, render_template, url_for, redirect, flash, request
from wtforms import Form, fields,TextField, StringField, PasswordField, BooleanField,validators
from wtforms.validators import InputRequired, Email, Length, DataRequired
from flask_wtf import FlaskForm
from flask_uploads import UploadSet, configure_uploads, IMAGES
from flask_login import LoginManager, UserMixin, login_user, login_required, logout_user, current_user

I couldn't solve this issue, do you have any idea of what can I do ?

回答1:

In flask_uploads.py

Change

from werkzeug import secure_filename,FileStorage

from werkzeug.utils import secure_filename
from werkzeug.datastructures import  FileStorage

回答2:

According to this issue, it is a bug related to the current version 1.0.0 of workzeug. It's merged but not yet published in pypi. The workaround know until now is to downgrade from werkzeug=1.0.0 to werkzeug==0.16.0

So for do that you just need run the command:

pip install -U Werkzeug==0.16.0

Looking in the release notes from workzeug there is a version 0.16.1, but in bug report there is no evidence that using that version could work.

回答3:

You are using a broken version of Flask-Uploads.

Unfortunately, the maintainer of the package decided not to release a new version of the package to PyPi.

You can use Flask-Reuploaded as a drop-in replacement, which fixes your problem.

https://pypi.org/project/Flask-Reuploaded/

回答4:

I couldn't solve the problem with flask-upload but followed this video and it allowed me to do what I wanted to do: https://www.youtube.com/watch?v=6WruncSoCdI

来源：https://stackoverflow.com/questions/61628503/flask-uploads-importerror-cannot-import-name-secure-filename

标签

python

Flask

python-3.6

flask-sqlalchemy

flask-uploads