Snippet for dynamically updating sys.path to include virtualenv when import fails

dynamically_append_virtualenv_to_path.py

import os
import sys

try:
    import sqlite3
    import yaml
except ImportError:
    # n.b. Dynamically activate virtualenv if needed.
    sys.path.append(os.path.realpath('%s/venv/lib/python3.6/site-packages' % os.path.dirname(__file__)))
    import sqlite3
    import yaml