Use virtual environment in project directory

.gitignore

+/venv/

visualizer.py

@@ -9,7 +9,7 @@ from urllib.request import urlopen
 from wsgiref.handlers import CGIHandler
 
 # Activate the virtual env to get access to non-standard packages.
-activator = '/home/ograham/venv/bin/activate_this.py'
+activator = 'venv/bin/activate_this.py'
 exec(open(activator).read(), {'__file__': activator})
 
 import asccol