How to install Flask on Python3 using pip?
You seem to have a permission issue. From the log you pasted to pastebin:
error: could not create '/usr/local/lib/python3.4/dist-packages/flask': Permission denied
This is because
pip will attempt to install the package globally unless you specify a certain installation location. If you want to install this globally you must use
sudo or install as a user with privileges.
Try the following:
sudo pip3 install flask
Or specify to a certain dir:
pip install -t <path> flask
However, with the latter method you will have to always inject the path to
sys.modules so I suggest you just use
sudo if you can.
Or even more preferrably, use
virtualenv. Virtualenv allows you to very easily package your application for production because you can install only the packages you need and you've thus got automatic package isolation. Generating a
requirements.txt is then as simple as
pip freeze > requirements.txt. Remeber that if you end using a virtualenv, you must not use
sudo to install packages as they will then be installed outside the virtualenv.
For Python 3.6.4 version, it is possible to install Flask by doing:
sudo pip3.6 install flask
kramer65Updated on February 07, 2020
kramer65 over 3 years
I want to try using Flask with Python3. I've got Python 3.4 on Ubuntu 14.04, which supposedly ships with pip included. So I tried
pip3 install flask
this ends in:
Cleaning up... Command /usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip_build_kramer65/flask/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-i98xjzea-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_kramer65/flask Storing debug log for failure in /tmp/tmpqc3b2nu5
So I tried importing it, but to no avail:
[email protected]:~/cxs$ python3 Python 3.4.0 (default, Apr 11 2014, 13:05:11) [GCC 4.8.2] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import flask Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named 'flask'
I can of course download it and install using
sudo python3 setup.py installit that way, but I would rather do it "the standard way" so that things are easily and more standard to setup on production machines.
Does anybody know how I can import Flask with Python3 and pip? All tips are welcome!
Error log is available in http://pastebin.com/hd6LyVFP
msvalkon almost 9 yearsPost the contents of
kramer65 almost 9 years@msvalkon - There was quite a lot of content, so I pasted it in a pastebin: pastebin.com/hd6LyVFP Any ideas?