Alex Grigoryev added the comment:
https://docs.python.org/2/library/string.html#string.lstrip
(https://link.getmailspring.com/link/4c83e422-2f29-440a-8ce3-0ae8b13f5...@getmailspring.com/0?redirect=https%3A%2F%2Fdocs.python.org%2F2%2Flibrary%2Fstring.html%23string.lstrip&recip
New submission from Alex Grigoryev :
These methods have confusing implicit behavior. I propose to make it explicit,
either strip the exact sequence or chars or leave the string as is.
In [1]: 'mailto:ma...@gmail.com'.lstrip('mailto')
Out[1]: ':ma...@gmail.com'
I
