Issue 1169: unify symbols and var
http://code.google.com/p/sympy/issues/detail?id=1169
Comment #14 by ondrej.certik:
Sure. Apply this patch:
$ git di
diff --git a/sympy/core/symbol.py b/sympy/core/symbol.py
index 5e3f134..1e2e266 100644
--- a/sympy/core/symbol.py
+++ b/sympy/core/symbol.py
@@ -256,6 +256,8 @@ def var(*names, **kwargs):
try:
kwargs['single_character_names'] = False
s = symbols(*names, **kwargs)
import pdb
pdb.set_trace()
if s is None:
return s
if isinstance(s, Symbol):
start isympy, run:
In [1]: symbols('x', 'y', real=True)
Out[1]: [x, y]
In [2]: var('x', 'y', real=True)
256 try:
257 kwargs['single_character_names'] = False
258 s = symbols(*names, **kwargs)
259 import pdb
260 pdb.set_trace()
261 -> if s is None:
262 return s
263 if isinstance(s, Symbol):
264 s_list = [s]
265 else:
266 s_list = s
(Pdb) p s
x
(Pdb) p names
('x', 'y')
(Pdb) p kwargs
{'real': True, 'single_character_names': False}
(Pdb)
and I hope it's clear now --- the other branch in symbols() gets executed
with
single_character_names() and that doesn't handle the symbols("x", "y")
syntax.
Do you think you could also please write regular tests for symbols()? I
didn't find
any. If something is still not clear, feel free to ask.
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