mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-26 13:12:30 -06:00
64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
"""
|
|
You can use verify() just like assert, with these small differences:
|
|
- you may need to "import Verify", if someone hasn't done it
|
|
for you.
|
|
- unlike assert where using parenthises are optional, verify()
|
|
requires them.
|
|
e.g.:
|
|
assert foo # OK
|
|
verify foo # Error
|
|
assert foo # Not Recomended (may be interpreted as a tuple)
|
|
verify(foo) # OK
|
|
- verify() will print something like the following before raising
|
|
an exception:
|
|
verify failed:
|
|
File "direct/src/showbase/ShowBase.py", line 60
|
|
- verify() will optionally start pdb for you (this is currently
|
|
false by default). You can either edit Verify.py to set
|
|
wantVerifyPdb = 1 or if you are using ShowBase you can set
|
|
want-verify-pdb 1 in your Configrc to start pdb automatically.
|
|
- verify() will still function in the release build. It will
|
|
not be removed by -O like assert will.
|
|
|
|
verify() will also throw an AssertionError, but you can ignore that if you
|
|
like (I don't suggest trying to catch it, it's just doing it so that it can
|
|
replace assert more fully).
|
|
|
|
Please do not use assert for things that you want run on release builds.
|
|
That is a bad thing to do. One of the main reasons that assert exists
|
|
is to stip out debug code from a release build. The fact that it throws
|
|
an exception can get it mistaken for an error handler. If your code
|
|
needs to handle an error or throw an exception, you should do that
|
|
(and not just assert for it).
|
|
|
|
If you want to be a super keen software engineer then avoid using verify().
|
|
If you want to be, or already are, a super keen software engineer, but
|
|
you don't always have the time to write proper error handling, go ahead
|
|
and use verify() -- that's what it's for.
|
|
|
|
Please use assert (properly) and do proper error handling; and use verify()
|
|
only when debugging (i.e. when it won't be checked-in) or where it helps
|
|
you resist using assert for error handling.
|
|
"""
|
|
|
|
wantVerifyPdb = 0 # Set to true to load pdb on failure.
|
|
|
|
|
|
def verify(assertion):
|
|
"""
|
|
verify() is intended to be used in place of assert where you
|
|
wish to have the assertion checked, even in release (-O) code.
|
|
"""
|
|
if not assertion:
|
|
print "\n\nverify failed:"
|
|
import sys
|
|
print " File \"%s\", line %d"%(
|
|
sys._getframe(1).f_code.co_filename,
|
|
sys._getframe(1).f_lineno)
|
|
if wantVerifyPdb:
|
|
import pdb
|
|
pdb.set_trace()
|
|
raise AssertionError
|
|
|
|
if not hasattr(__builtins__, "verify"):
|
|
__builtins__["verify"] = verify
|