Traceback when function var without default follows var with default set

[maedox]

PyFlake doesn't seem to handle the syntax(?) error of defining a function where a variable with a default value is followed by a variable without a default.

Minimal code to reproduce

def failure(var1="test", var2):
    pass

Quickfix output Error detected while processing function flake8#on_write..flake8#check: line 1: E121: Undefined variable: null E15: Invalid expression: [{"lnum": null, "text": "non-default argument follows default argument", "type": "E", "col": 0, "filename": "/home/paal/tmp.py"}] Traceback (most recent call last): File "", line 1, in File "", line 15, in flake8_check File "", line 18, in parse_result vim.error line 3: E121: Undefined variable: g:qf_list E15: Invalid expression: g:qf_list line 6: E121: Undefined variable: g:qf_list E116: Invalid arguments for function setqflist line 16: E121: Undefined variable: g:qf_list E116: Invalid arguments for function len(g:qf_list) E15: Invalid expression: len(g:qf_list)

[andviro]

Hmm, I wonder why compile() throws broken SyntaxError instance in this case. I'll look into it, thanks.

[andviro]

I guess that does it. Thanks for the issue, I was too lazy to implement syntax errors properly.