https://colab.research.google.com/drive/11v5h7QmpJasyzQuKCIleO17_lkGbJHCD?usp=sharing
you may change 'alpha' value from 0 to 26. It means alphabets in lower case.
your email id and passwords are needed to login into credly official site.
We have alter our code little-bit, the line 42 of credly_links.py have badge filter xpath. for certificates we have to exchange it certification filter xpath..