I have a class Vector where:
class Vector(Symbol):
def __init__(self,basis_str=None):
if isinstance(basis_str,Vector):
self = basis_str
else:
if basis_str == None or basis_str == '0':
self = S(0)
else:
Symbol.__init__(self,basis_str,commutative=False)
print self
print self.is_commutative
then:
er = Vector('er')
outputs my diagnostic print -
er
True
How do I subclass and get self.is_commutative = False?
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