RecursionError on iterated function call

[Michael Graczyk]

Cool Tool, thanks for sharing (I saw it on Hacker News).
I found this bug while playing around with it.

Steps To Reproduce

1. Open Math Inspector ( version 0.9.0 Beta )
2. Run the following

Math Inspector 0.9.0 (Beta)
Type "help", "copyright", "credits", "license" for more information

>>>  def f(x):
...    return x

>>>  f(f(1))
Exception in Tkinter callback
Traceback (most recent call last):

  File "tkinter/__init__.py", line 1705, in __call__

  File "console/prompt.py", line 64, in _on_key

  File "console/prompt.py", line 131, in push

  File "console/interpreter.py", line 153, in push

  File "console/codeparser.py", line 37, in preprocess

  File "ast.py", line 271, in visit

  File "ast.py", line 279, in generic_visit

  File "ast.py", line 271, in visit

  File "ast.py", line 281, in generic_visit

  File "ast.py", line 271, in visit

  File "console/codeparser.py", line 94, in visit_Call

  File "util/vdict.py", line 41, in __setitem__

  File "node/item.py", line 261, in setarg

  File "util/vdict.py", line 41, in __setitem__

  File "node/item.py", line 261, in setarg

  # ... repeats many times

  File "util/vdict.py", line 41, in __setitem__

  File "node/item.py", line 255, in setarg

  File "tkinter/ttk.py", line 1384, in item

  File "tkinter/ttk.py", line 298, in _val_or_dict

  File "tkinter/ttk.py", line 73, in _format_optdict

  File "tkinter/ttk.py", line 58, in _format_optvalue

  File "tkinter/__init__.py", line 57, in _join

  File "tkinter/__init__.py", line 61, in _stringify

RecursionError: maximum recursion depth exceeded in __instancecheck__

Expected Result

No error

Actual Result

RecursionError

[TheOneThreeSeven]

Nice catch. This is happening because in the code parsing file there is a bug for this type of scenario. It's going to take a bit of digging into, but should hopefully be very straight forward to resolve. I'll take a shot at it next week.

https://github.com/MathInspector/MathInspector/blob/master/mathinspector/console/codeparser.py

[TheOneThreeSeven]

this has been fixed in this commit c810f3b

the solution was to prevent objects from being allowed to plug their own wire into themselves in node/item.py