>> Does anybody know of a tool that can tell me all possible exceptions
>> that might occur in each line of code? What I'm hoping to find is
>> something like the following:
Paul> That is impossible. The parameter to the raise statement is a
Paul> class object, which can be anything.
Sure, but in all but the rarest of cases the first arg to raise is a
specific exception, probably one of the standard exceptions. In the Python
code in the distribution (ignoring the test directory where all sorts of
mischief is done to stress things), here are the most common words following
"raise" where "raise" is the first word on the line:
% find . -name '*.py' \
> | egrep -v '\./test' \
> | xargs egrep '^ *raise ' \
> | awk '{print $3}' \
> | sed -e 's/[(,].*//' \
> | sort \
> | uniq -c \
> | sort -rn \
> | head -15
246 ValueError
227 aetools.Error
216 Error
124 TypeError
101 error
75 RuntimeError
53 IOError
36 NotImplementedError
36 ImportError
36 EOFError
31 SyntaxError
23 KeyError
23 AttributeError
22 DistutilsPlatformError
21 UnicodeError
Without checking, my guess is that #5 ("error") is one of a handful of
exception classes defined at module scope (ftplib, anydbm, sre_constants,
poplib, among others all define such an exception class), and not a variable
that accepts multiple values as in your example.
In short, while not perfect, simply grepping for '^ *(class|def|raise) ' and
printing the first and second words of each output line would probably give
you a pretty good idea of what gets raised where.
Skip
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