Flask ImportError No Module Named Flask

Question

I followed this flask tutorial: http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world.

I am getting this error at the part where I run ./run.py :

Traceback (most recent call last):

  File "./run.py", line 3, in <module>

    from app import app

  File "/Users/benjaminclayman/Desktop/microblog/app/__init__.py", line 1, in <module>

    from flask import Flask

ImportError: No module named flask

Can someone help me with this issue?

Answer 1

What you have to do is to delete the virtualenv you created. Then create a new virtualenv with:

virtualenv flask

Then:

cd flask

Then activate the virtualenv:

source bin/activate

Then install  flask:

pip install flask

After that create a file named hello.py:

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello World!"

if __name__ == "__main__":
    app.run()

Then  run it with:

python hello.py

I hope this helps.