New submission from Ganesh Kumar :
The `TypeError` message when a string is indexed using a string should be
similar to the `TypeError` message when a list or tuple is indexed using a
string.
>>> my_str = 'Rin'
>>> my_str[1:3] # works
'in'
>>>
New submission from Ganesh Kumar :
the "allow_abbrev" in "argparse.ArgumentParser" behavior does not work as
intended in python 3.9.0
$ python3 --version
Python 3.5.3
$ python3 mcve.py -S
$ python3 mcve.py -SS
usage: mcve.py [-h] [-S]
mcve.py: error: unrecognized argumen
