Comment #17 on issue 1977 by [email protected]: symbols() gives unexpected
behavior when passed a list of length 1
http://code.google.com/p/sympy/issues/detail?id=1977
I propose the following 3 deprecation warnings:
>>> symbols('x y',each_char=True)
keyword "each_char" is deprecated; separate symbols with spaces or
commas.
(x, y)
>>> symbols('xy',each_char=True)
multi-char names without trailing space or comma are ambiguous during
deprecation.
(x, y)
>>> symbols('x','y')
deprecated: pass multiple symbols names in an iterable.
(x, y)
wip in my symbol_deprecation branch.
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