On 2014-11-18 01:21, Terry Reedy wrote:
On 11/17/2014 9:49 AM, 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.
You could also a) ask on python-list (new thread), or scan python
questions on StackOverflow. Todays's example: "Why does my function
return None?" Because there is no return statement. Perhaps current
checkers can note that, but what about if some branches have a return
and others do not? That is a likely bug.
Mutable default parameters comes up occasionally.
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