This is a sample on investpy usage when it comes to stock data retrieval, as current release is 0.9.7.

investpy_stocks.py

import investpy

print(investpy.__author__, investpy.__version__)

# Retrieve a `pandas.DataFrame` containing all the Stocks from United States
stocks = investpy.get_stocks(country='united states') 

# Retrieve historical data from AAPL
df = investpy.get_stock_historical_data(stock='AAPL', # Stock symbol of the stock to retrieve data from
                                        country='united states', # Country from where the introduced stock is from
                                        from_date='01/01/2010', # Date since data is going to be retrieved formatted as dd/mm/yyyy
                                        to_date='01/01/2019' # Date until data is going to be retrieved formatted as dd/mm/yyyy)