python flask import error

Question

I am running the following code

from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
    return "Hello World!"
if __name__ == "__main__":
    app.run(host='0.0.0.0', port=80, debug=True)

and getting the following error

Traceback (most recent call last):
  File "test.py", line 1, in <module>
    from flask import Flask
  File "/home/pi/programs/flask.py", line 1, in <module>
    from flask import Flask
ImportError: cannot import name Flask

I have tried installing flask through various methods , but still the problem persists

also, is there any alternative to flask???

Asked By: Manarjan Singh Ghai

||

Source

Answer 1

Just run apt-get install python3-flask

Edited to install the python3 version, since nobody should be using python2 now.

Answered By: LtWorf

Answer 2

I ran into this error because I named the test file as flask.py and tried to run it! It creates namespace conflict with the real flask module!

Delete the local test file that you named flask.py and the respective flask.pyc. Give some other name! This will happen with other modules like socket etc where you are likely to give the same name for the test file as the standard module 🙂

Answered By: Nishant

Answer 3

Just rename flask.py file also delete flask.pyc file

Answered By: hardik k

Answer 4

exactly when we create file name as flask.py and then execute it for the first time it will execute and at the same time framework creates another file called flask.pyc .Now stop the process and start it again it will throw this error as instead of looking to actual framework flask file it is looking in to the one you created . To solve this problem
Go to the folder you created flask.py and delete flask.pyc and then rename flask.py to some test_1.py ..save it and execute it . You should see no errors .

Answered By: Vijay