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Notes/09_Packages/02_Third_party.md

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+# 9.2 Third Party Modules
+
+### Introduction
+
+Python has a large library of built-in modules (*batteries included*).
+
+There are even more third party modules. Check them in the [Python Package Index](https://pypi.org/) or PyPi. Or just do a Google search for a topic.
+
+### Some Notable Modules
+
+* `requests`: Accessing web services.
+* `numpy`, `scipy`: Arrays and vector mathematics.
+* `pandas`: Stats and data analysis.
+* `django`, `flask`: Web programming.
+* `sqlalchemy`: Databases and ORM.
+* `ipython`: Alternative interactive shell.
+
+### Installing Modules
+
+Most common classic technique: `pip`.
+
+```bash
+bash % python3 -m pip install packagename
+```
+
+This command will download the package and install it globally in your Python folder. Somewhere like:
+
+```code
+/usr/local/lib/python3.6/site-packages
+```
+
+### Problems
+
+* You may be using an installation of Python that you don't directly control.
+  * A corporate approved installation
+  * The Python version that comes with the OS.
+* You might not have permission to install global packages in the computer.
+* Your program might have unusual dependencies.
+
+### Talk about environments...
+
+
+## Exercises
+
+(rewrite)