Deprecation warning due to invalid escape sequences in Python 3.8

[tirkarthi]

Deprecation warnings are raised due to invalid escape sequences in Python 3.8 . Below is a log of the warnings raised during compiling all the python files. Using raw strings or escaping them will fix this issue.

find . -iname '*.py'  | xargs -P 4 -I{} python -Wall -m py_compile {}

./rauth/session.py:131: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/session.py:329: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/session.py:425: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/session.py:471: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:196: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:224: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:248: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:266: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:302: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:340: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:483: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:495: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:526: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:546: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:651: DeprecationWarning: invalid escape sequence \*
  '''
./rauth/service.py:665: DeprecationWarning: invalid escape sequence \*
  '''

[storenth]

rauth 0.7.3

Same here: