Status: NeedsDecision
Owner: asmeurer
Labels: Type-Defect Priority-Medium Python3

New issue 2619 by asmeurer: Should we give a better error message on unsupported versions of Python?
http://code.google.com/p/sympy/issues/detail?id=2619

I just noticed that the new IPython 0.11 only supports Python 2.6 and 2.7. If you try to use it in Python 2.5, you get the message:

$python2.5 ipython.py
Traceback (most recent call last):
  File "ipython.py", line 17, in <module>
    this_dir, 'IPython', 'scripts', 'ipython'
  File "IPython/scripts/ipython", line 5, in <module>
    from IPython.frontend.terminal.ipapp import launch_new_instance
  File "IPython/__init__.py", line 32, in <module>
raise ImportError('Python Version 2.6 or above is required for IPython.')
ImportError: Python Version 2.6 or above is required for IPython.

Should we do the same (except using "2.5" instead of "2.6")? I think it might be worth it, especially as we are not supporting Python 3.0, which may not result in an immediate SyntaxError upon importing SymPy like happens in Python 2.4.

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