Comment #2 on issue 2293 by sherjilo...@gmail.com: Unexpected limit
behaviour
http://code.google.com/p/sympy/issues/detail?id=2293
Could someone suggest an error string ?
How about ValueError("Invalid limit variable %s" %z) ?
In [2]: limit(x**2, 4, 0)
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/Users/sherjilozair/sympy/<ipython console> in <module>()
/Users/sherjilozair/sympy/sympy/series/limits.py in limit(e, z, z0, dir)
45
46 if not isinstance(z, Symbol):
---> 47 raise ValueError("Invalid argument for limit
variable %s" %z)
48
49 if not e.has(z):
ValueError: Invalid argument for limit variable 4
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