readme.txt

References:
https://pandas.pydata.org/pandas-docs/stable/reference/index.html
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.to_datetime.html
https://www.w3schools.com/python/ref_string_format.asp
https://www.kite.com/python/answers/how-to-get-the-first-word-in-a-string-in-python
https://www.geeksforgeeks.org/different-ways-to-clear-a-list-in-python/
https://www.shanelynn.ie/python-pandas-read-csv-load-data-from-csv-files/
https://www.geeksforgeeks.org/taking-input-in-python/

https://www.javatpoint.com/pandas-sum
https://www.marsja.se/pandas-count-occurrences-in-column-unique-values/
https://re-thought.com/pandas-value_counts/
https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html
https://www.codegrepper.com/code-examples/python/how+to+loop+through+index+in+pandas+