Web validation

[r-w]

If no internet connection:
if have files:
run anyway, with warning
else:
ERROR
else:
if error getting hash/files:
if have files:
run anyway, with warning
else:
ERROR
else:
run

 

[Chris Rebert]

If no internet connection:

Try loading http://example.com using urllib
(http://docs.python.org/library/urllib.html).
If an exception gets raised, you're not connected (properly).

Cheers,
Chris

 

[J. Clifford Dyer]

If no internet connection:
if have files:
run anyway, with warning
else:
ERROR
else:
if error getting hash/files:
if have files:
run anyway, with warning
else:
ERROR
else:
run

import logging

def run_with_files(files):
if files:
logging.warn("warning")
run()
else:
logging.error("error")
raise IOError

if internet_connection() and got_hash():
run()
else:
run_with_files(files)