from https://www.meetup.com/Discover-Tech-Talks/events/273547151/ event

flask import error

$ flask run
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
Usage: flask run [OPTIONS]

Error: While importing "app", an ImportError was raised:

Traceback (most recent call last):
  File "/Users/mymac/Documents/workspaces/learn/api-project/venv/lib/python3.7/site-packages/flask/cli.py", line 240, in locate_app
    __import__(module_name)
  File "/Users/mymac/Documents/workspaces/learn/api-project/app.py", line 6, in <module>
    from yahooquery import Ticker
  File "/Users/mymac/Documents/workspaces/learn/api-project/venv/lib/python3.7/site-packages/yahooquery/__init__.py", line 4, in <module>
    from .research import Research  # noqa
  File "/Users/mymac/Documents/workspaces/learn/api-project/venv/lib/python3.7/site-packages/yahooquery/research.py", line 6, in <module>
    from .base import _YahooFinance
  File "/Users/mymac/Documents/workspaces/learn/api-project/venv/lib/python3.7/site-packages/yahooquery/base.py", line 10, in <module>
    from tqdm import tqdm
ModuleNotFoundError: No module named 'tqdm'