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Re: Max size of Python source code and compiled equivalent

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  Re: Max size of Python source code and compiled equivalent Peter Otten <__peter__@web.de> - 2016-07-21 20:17 +0200

#111728 — Re: Max size of Python source code and compiled equivalent

Malcolm Greene wrote:

> We're writing a DSL parser that generates Python code. While the size of
> our generated code will be small (< 32K), I wanted to re-assure the rest
> of our team that there are no reasonable code size boundaries that we
> need to be concerned about. I've searched for Python documentation that
> covers max Python source (*.py) and compiled file (*.pyc) sizes without
> success. Any tips on where to look for this information?
>  
> Background: Python 3.5.1 on Linux.

I don't know if/where this is documented, but there are structural limits:

>>> def nested(N):
...     return "".join(" " * i + "if 1:\n" for i in range(N)) + " " * N + 
"print('hi')"
... 
>>> print(nested(3))
if 1:
 if 1:
  if 1:
   print('hi')
>>> exec(nested(99))
hi
>>> exec(nested(100))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 101
    print('hi')
              ^
IndentationError: too many levels of indentation

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