Alternative assert modes

dag / braindump

Ideas and Experiments

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Alternative assert modes #10

Open dag opened 13 years ago

dag commented 13 years ago

Not sure if useful, but here goes:

AST/Import hook for transforming assertions to substitute for alternative behavior.

Throw warnings rather than failing hard. Failing hard is often desirable, but sometimes not, and currently your only option is to disable assertions completely.
Translate to log records: debug for passing assertions, error or warning for failing.
Inject useful debug information beyond traceback.
Backport Python 3 behavior of warning for always-true tuple literals.

dag commented 13 years ago

Maybe mess with the message as well:

assert something, """
    {something} is str.formatted using locals() and processed with textwrap/cleandoc
    to allow line-wrapping and indenting without messing up the resulting message.
"""

although this could technically be done by just catching the AssertionError and getting the frame from the traceback, possibly in a context manager or an excepthook.