Python 2 + Flask - ImportError: No module named request

Question

I'm trying to install Flask, using pip.

Running the most basic:

from flask import Flask
app = Flask(__name__)

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

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

I get ImportError: No module named request

python --version returns Python 2.7.6

pip show flask returns version: 0.10.1

From what I've been able to find, the request module is Python 3 related. and says to use urllib2.

So I've added import urllib2, then get:

  ImportError: dlopen(/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so, 2): Symbol not found: __PyErr_ReplaceException
  Referenced from: /usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so
  Expected in: flat namespace

What am I doing wrong?

Did you try this in a virtualenv? If It's a global environment, maybe there's a package conflict that causes this. — Leandro Poblet, Aug 05 '15 at 14:33

score 1 · Answer 1 · answered May 04 '16 at 12:19

Creating a virtualenv worked for me. Following steps on this page http://flask.pocoo.org/docs/0.10/installation/#virtualenv you do:

pip install virtualenv

virtualenv MY_NAME

. MY_NAME/bin/activate

pip install Flask

python index.py

To make basic Flask app running inside your MY_NAME virtualenv.

Python 2 + Flask - ImportError: No module named request

1 Answers1