Using flask_jwt in my Flask App giving Error- ImportError: cannot import name 'Mapping' from 'collections'

[Mukund-Tandon]

Using Python 3.10

Complete error-

app.py -

from flask import Flask,request
from flask_restful import Resource,Api
from flask_jwt import JWT
from security import authenticate,identify

app= Flask(__name__)
api= Api(app)
app.secret_key= secret_key

jwt =JWT(app,authenticate,identify)
items= []
class Item(Resource):
    @jwt_required()
    def get(self,name):
        item=next(filter(lambda x:x['name']== name, items),None)
        return {'item':item},200 if item else 404
    def post(self,name):
        if next(filter(lambda x:x['name']== name, items),None):
            return {"message":"An item with name'{}' exist".format(name)}, 400
        data = request.get_json()
        item= {'name':name,
        'price': data['price']
        }
        items.append(item)
        return item, 201
class ItemsList(Resource):
    def get(self):
        return {'items':items}
api.add_resource(ItemsList,'/items')
api.add_resource(Item,'/items/<string:name>')

app.run(port=5000,debug=True)

[Aazerra]

the solution is the author of package jwt change import to from collections.abc import Mapping for python 3.10 P.S: i checked it seems they updated the package now this package need to bump PyJWT version @mattupstate

[jmrsnt]

@Mukund-Tandon, same here

[SaraFarron]

Same

[sachin96Boy]

same, any solutions?

[captnw]

I ran into this problem as well. I was using Python version 3.10.4 at the time.

I saw some other people having the same issue on Stackoverflow: https://stackoverflow.com/questions/69381312/in-vs-code-importerror-cannot-import-name-mapping-from-collections

The top rated solution (credit to John R Perry and Geremia) was to change any instance of: from collections import Mapping to from collections.abc import Mapping.

This may not be backwards compatible to older versions, so I think one should handle it via a try except block ( I copied some code from the urllib3 and Flask-RESTful library that had code which handled this ImportError case ).

try:
    from collections.abc import Mapping
except ImportError:
    from collections import Mapping

Credits to @Aazerra for having the answer before I found this thread.

EDIT 11/28/2022:

On further inspection, this package is referencing python package jwt: https://github.com/jpadilla/pyjwt. They have already fixed this problem, so the dependecy for pyjwt needs to be updated to address the issue for this package.

[tdxs8848]

It is recommended to update pyjwt to 1.7.1

The pyjwt version of the directly downloaded flask-jwt is 1.4.1 Will trigger:

ImportError: cannot import name 'Mapping' from 'collections'

If you use the latest pyjwt Will trigger:

return jsonify({'access_token': access_token.decode('utf-8')})
AttributeError: 'str' object has no attribute 'decode'

[Villa01]

I solved this by installing a new version of pyJWT as @tdxs8848 mentioned in his answerd. pip install PyJWT --upgrade For flask-jwt it would probably, I'll suggest to upgrade this dependency and changing the requirements.txt

[AnuragBalhra]

I'm still facing the same issue? Is this issue resolved yet? I can still see an older version of PyJWT being used in the requirements.txt https://github.com/mattupstate/flask-jwt/blob/c27084114e258863b82753fc574a362cd6c62fcd/requirements.txt#L2

Also, I don't know why this PR suggesting the change was closed without merging it in? https://github.com/mattupstate/flask-jwt/pull/151

What's the best way to solve this now?