Updates:
Cc: asmeurer
Labels: NeedsReview
Comment #4 on issue 1719 by smichr: implement from sympy.abc import lower,
greek
http://code.google.com/p/sympy/issues/detail?id=1719
Vinzent...for consideration, branch 1719 has a new abc folder with lower,
upper and
greek scripts that allow one to do what you've said...and in contradiction
to what I
said above, I've left a "safety" on the upper case in that none of the
sympy-clashing
upper case symbols are imported. If someone really wants to do that they
will have to
do it themselves i.e. N = Symbol('i_do_not_care_about_N'). Here's some
interactive
session showing the behavior. ** There is a problem that I am having below,
though. **
>>> from sympy import *
>>> alpha # not defined yet
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'alpha' is not defined
>>> from sympy.abc.greek import alpha
>>> beta # not defined yet
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'beta' is not defined
>>> alpha # but we did import this one successfully
alpha
>>> from sympy.abc.greek import *
>>> beta # now we have them all
beta
>>> A
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'A' is not defined
>>> a
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
>>> from sympy.abc.lower import *
>>> a
a
>>> A
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'A' is not defined
>>> from sympy.abc.upper import *
>>> A
A
*********************************
OK, here's the problem. I was updating the gotchas.txt file and ran into
this problem:
>>> dir (sympy.abc)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'abc'
>>> from sympy.abc import *
The dir command fails but I clearly can access abc as the next command
shows...how do
I get the first one to succeed?
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