3 ms·
The problem there is that 2.4's exception statements and 3.0's have two different meanings. 2.4 only supports this: try: do stuff except FooEr
by koenigdavidmj 16y ago
The problem there is that 2.4's exception statements and 3.0's have two different meanings.
2.4 only supports this:
try:
do stuff
except FooError, e:
do stuff with e
3.0 and up choke on this; they interpret it as "catch exceptions of type FooError or e and do not give the exception object a name".
2.5 through 2.7 interpret like 2.4 but also support explicit parentheses to do what Python 3 does:
try:
do stuff
except (FooError, BarError) as e:
do stuff
except (BazError, QuxError):
do other stuff
2to3 requires that you use the new exception syntax only, to avoid confusion.
- briancurtin 16y agoThe following will work across 3 and 2 versions going back pretty far. It's necessary if you want to support pre-2.5 versions (where `as` was introduced): import sys try: fn() except (IOError, TypeError): err = sys.exc_info()[1] print(err) http://docs.pythonsprints.com/python3_porting/py-porting.html#exceptions http://docs.pythonsprints.com/python3_porting/py-porting.htm...
- koenigdavidmj 16y agoStill kind of ugly, and not something which you want to litter than Django sources. Especially if you are going to put them all back when 2.4 support is dropped.