python install

python install

python on windows

download python 2.7.x windows installer from https://www.python.org/
download psycopg2 windows installer from http://initd.org/psycopg/

python on mac

python was already installed on mac, but it was Apple's version

installed macports version of python

# to change to macports python...
sudo port select --set python python27

# to change back...
sudo port select --set python python27-apple

psycopg2 and mysql drivers were easily installed with macports using these commands:

sudo port install py27-psycopg2
sudo port install py27-mysql

however, for the following items, pip was used with apple python to learn how it works; each of these were available on macports and could easily be installed from there

pip and postgres driver

install pip and psycopg2
pip is a package manager for python
download get-pip.py from https://pip.pypa.io/en/latest/installing.html
```
sudo python ~/Downloads/get-pip.py
```
sudo pip install psycopg2 failed because it couldn't find pg_config
postgres was already installed with macports, so I modified the path
```
export PATH=$PATH:/opt/local/lib/postgresql93/bin
```
this now worked
```
sudo pip install psycopg2
```

sqlite

sqlite3 is installed by default with python

mysql

mysql was already installed with macports, so I modified the path
```
export PATH=$PATH:/opt/local/lib/mysql55/bin
```
this now worked
```
sudo pip install MySQL-python
```

view installed modules

python (starts an interactive python shell)
help('modules')

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