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Installing Python gmusicapi.md

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Python

I assume (moreorless arbitrarily) that gmusicapi depends on Python 2.7. At the time of writing, I see that Python 3 is not supported.

I enforce that Major version must == 2, and Minor version must >= 7. You may have other Python executables available. For now I perform my version check upon whichever Python the NodeJS python-shell chooses.

Confirm python version

Is the python on your PATH the one you are thinking of?

python -V

Expected output is something like:

Python 2.7.8

gmusicapi Python module

gmusicapi recommends installing itself via pip, which is a Python package manager.

You would use pip to acquire the gmusicapi Python module.

Install pip

Instructions here

Confirm pip version

Does the pip on your PATH concern the correct version of Python?

pip -V

Expected output will look something like:

pip 7.1.2 from /usr/local/lib/python2.7/site-packages (python 2.7)

Note python 2.7, as required.

Install gmusicapi

Instructions here, but essentially:

pip install gmusicapi

In particular, you are looking for these lines:

Installing collected packages: gmusicapi
  Running setup.py install for gmusicapi
Successfully installed gmusicapi-7.0.0

Extras

If you intend to use the "upload music" APIs, you will need a way to transcode audio. For example ffmpeg or similar. Ensure that whatever you install for this purpose, is exposed on your PATH.

You will want at least libmp3lame installed for use by your audio transcoder.

Sanity check

First pass

Wondering if pip has successfully installed gmusicapi? Ask it to show you what it installed:

pip show gmusicapi

Hopefully the reply looks something like this:

---
Metadata-Version: 1.1
Name: gmusicapi
Version: 7.0.0
Summary: An unofficial api for Google Play Music.
Home-page: http://pypi.python.org/pypi/gmusicapi/
Author: Simon Weber
Author-email: simon@simonmweber.com
License: Copyright (c) 2015, Simon Weber
Location: /usr/local/lib/python2.7/site-packages

Note the Location: /usr/local/lib/python2.7/site-packages; this is where your package is installed.

Look inside that Location.

You should have a gmusicapi folder and an .egg-info folder:

/usr/local/lib/python2.7/site-packages/gmusicapi
/usr/local/lib/python2.7/site-packages/gmusicapi-7.0.0-py2.7.egg-info

If you have no gmusicapi folder, then setup did not run upon this egg. Uninstalling and reinstalling gmusicapi may help.

Second pass

Check whether you are capable now of importing gmusicapi

python -c "from gmusicapi import Mobileclient"

If the output is empty: great!

If it blows up: you've got a problem. Fix that before continuing to use this Node library.

For example, if you get:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named gmusicapi

Then the gmusicapi module was not installed under any of the module search paths which your Python environment inspects.

Well, which search paths is Python inspecting?
Mac (or any BSD system)

You can watch which file handles are being opened by the kernel.

Get this running in a Terminal window whilst your failing "import" script runs:

sudo opensnoop | grep gmusicapi

You'll see the directories in which Python tries (and fails with -1) to search for your module.

Or you'll see a huge stream of errors because you're on El Capitan. Fix like so (requires recovery reboot).

Windows

Same as above, but use Windows Sysinternals' ProcMon, and filter to Paths which contain gmusicapi.

How do I make it search in more places?

Recall from when you ran:

pip show gmusicapi

You identified where the gmusicapi module was installed (i.e. the Location that was dumped). You need to add that to your PYTHONPATH.

Ensure that this environment variable is set whenever a login shell launches (i.e. add to your ~/.bash_profile):

export PYTHONPATH="$PYTHONPATH:/usr/local/lib/python2.7/site-packages"

To recruit these changes during the current bash session, source your profile:

source ~/.bash_profile