Installing QR Code Processes In Python

November - 2021

Strike all the above for now. This section is based off of http://pyqrcode.sourceforge.net

This one provides both encoding and decoding.

To start, I installed the JCC library with.

sudo pip install jcc
sudo pip install PIL

Then, I installed the 'pyqrcode' module from source (on Mac 10.7.5) (When you installed on forge, you pulled source from: http://pyqrcode.sourceforge.net/). This was done by extracting the source tar ball to a directory with no spaces (since that can throw things off), the then running:

make 
sudo make install

This appears to have also build the "egg" for me (not sure what that is). It's also possible that the egg was created from an earlier attempt to install the module with PIP.

Note that after you installed it, you had to make the update to the file:

/Library/Python/2.7/site-packages/qrcode-0.2.1-py2.7-macosx-10.7-intel.egg/qrcode/__init__.py 

to comment out line 21:

#  _qrcode._setExceptionTypes(JavaError, InvalidArgsError)

This was based off this stack overflow answer:

http://stackoverflow.com/a/12200691/102401

These are notes from an earlier try with a different module. It doesn't offer decoding though, so it's not what you are going with:

Things you had to install before installing pyqrcode:

Free Type 2 system library. Python Imaging module. (Free Type 2 was optional, but seemed like a good idea. )

You got the code from:

http://code.google.com/p/pyqrcode/source/checkout

Pulled down with:

svn checkout http://pyqrcode.googlecode.com/svn/trunk/ pyqrcode-read-only

Then did a cd into the 'pyqrcode-read-only' dir and ran:

python setup.py build
sudo python setup.py install

After that, when you ran the test, it worked.