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This repository was archived by the owner on Apr 14, 2022. It is now read-only.
Detect variables which may be undefined in some code paths #299
Description
Try to help people detect UnboundLocalError`NameError` situations like:
def example():
if True:
pass
else:
x = 42
print(x * 2)
example()or
def example():
print(x * 2)
x = 42
example()(Make the above examples global-level statements and they become NameError.)
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jakebailey commentedon Oct 22, 2018
That second one is the same as #242, but the first of those examples is different as the analyzer will see that x is defined in the same scope and won't warn and is probably a further enhancement.
With #298:
MikhailArkhipov commentedon Oct 22, 2018
I'd change message to 'variable is possibly undeclared in some code path'
MikhailArkhipov commentedon Oct 24, 2018
Jake Bailey (@jakebailey) - wrt the message wording
[-]Detect variables referenced before assignment[/-][+]Change unknown variable message[/+]qubitron commentedon Oct 24, 2018
Need to move messages to resources
Remove (analysis), (parser) etc.
[-]Change unknown variable message[/-][+]Detect variables which may be undefined in some code paths[/+]jakebailey commentedon Oct 30, 2018
I think that first one could actually just be solved by #313 (dataflow analysis recognizing a code path without the variable being defined), so I'll do the naming fixes then close this when those are in.
Resource-ify diagnostic messages, rename some codes, remove "(...)" (#…
Resource-ify diagnostic messages, rename some codes, remove "(...)" (m…