[Python-Dev] Static checker for common Python programming errors

[Stefan Bucur]

Mark, thank you for the pointer! I will re-send my message there. Should I
include both mailing lists in a single thread if I end up receiving replies
from both?

Cheers,
Stefan

On Mon Nov 17 2014 at 4:04:45 PM Mark Shannon <mark at hotpy.org> wrote:

> Hi,
>
> I think this might be a bit off-topic for this mailing list,
> code-quality at python.org is the place for discussing static analysis tools.
>
> Although if anyone does have any comments on any particular checks
> they would like, I would be interested as well.
>
> Cheers,
> Mark.
>
>
> On 17/11/14 14:49, Stefan Bucur wrote:
> > I'm developing a Python static analysis tool that flags common
> > programming errors in Python programs. The tool is meant to complement
> > other tools like Pylint (which perform checks at lexical and syntactic
> > level) by going deeper with the code analysis and keeping track of the
> > possible control flow paths in the program (path-sensitive analysis).
> >
> > For instance, a path-sensitive analysis detects that the following
> > snippet of code would raise an AttributeError exception:
> >
> > if object is None: # If the True branch is taken, we know the object is
> None
> >    object.doSomething() # ... so this statement would always fail
> >
> > I'm writing first to the Python developers themselves to ask, in their
> > experience, what common pitfalls in the language & its standard library
> > such a static checker should look for. For instance, here [1] is a list
> > of static checks for the C++ language, as part of the Clang static
> > analyzer project.
> >
> > My preliminary list of Python checks is quite rudimentary, but maybe
> > could serve as a discussion starter:
> >
> > * Proper Unicode handling (for 2.x)
> >    - encode() is not called on str object
> >    - decode() is not called on unicode object
> > * Check for integer division by zero
> > * Check for None object dereferences
> >
> > Thanks a lot,
> > Stefan Bucur
> >
> > [1] http://clang-analyzer.llvm.org/available_checks.html
> >
> >
> >
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> mark%40hotpy.org
> >
>
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