Comments (6)
from matchpy.
Thanks, I am facing another issue with ManyToOneReplacer
:
>>> pattern2 = Pattern(Int(Pow(x_, m_), x), FreeQ((m,), x), NonzeroQ(Add(m_, one), (m,)))
>>> rule2 = ReplacementRule(pattern2, lambda m, x: Mul(Pow(x, Add(m, one)), Pow(Add(m, one), m_one)))
>>> subject2 = Int(Pow(x, one), x)
>>> replace_all(subject2, [rule2])
Mul(Pow(Add(ConstantSymbol('1'), ConstantSymbol('1')), ConstantSymbol('-1')), Pow(VariableSymbol('x'), Add(ConstantSymbol('1'), ConstantSymbol('1'))))
>>> rubi = ManyToOneReplacer(rule2)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/parsoyaarihant/anaconda/lib/python3.6/site-packages/matchpy-0.3-py3.6.egg/matchpy/matching/many_to_one.py", line 720, in __init__
File "/Users/parsoyaarihant/anaconda/lib/python3.6/site-packages/matchpy-0.3-py3.6.egg/matchpy/matching/many_to_one.py", line 330, in add
File "/Users/parsoyaarihant/anaconda/lib/python3.6/site-packages/matchpy-0.3-py3.6.egg/matchpy/matching/many_to_one.py", line 346, in _internal_add
File "/Users/parsoyaarihant/anaconda/lib/python3.6/site-packages/matchpy-0.3-py3.6.egg/matchpy/matching/many_to_one.py", line 346, in <listcomp>
File "/Users/parsoyaarihant/Rubi-MatchPy/Rubi/constraint.py", line 43, in with_renamed_vars
copy = NonzeroQ()
TypeError: __init__() missing 2 required positional arguments: 'expr' and 'vars'
rule2
is being evaluated my replace_all
but not by ManyToOneReplacer
.
from matchpy.
This is happening due to presence of NonzeroQ
:
class NonzeroQ(Constraint):
def __init__(self, expr, vars):
self.expr = expr
self.vars = frozenset(v.name for v in vars)
def __call__(self, substitution):
return sympify(str(substitute(self.expr, substitution))) != 0
@property
def variables(self):
return self.vars
def with_renamed_vars(self, renaming):
copy = NonzeroQ()
copy.vars = frozenset(renaming.get(v, v) for v in self.vars)
return copy
def __eq__(self, other):
return isinstance(other, NonzeroQ) and other.vars == self.vars and other.expr == self.expr
def __hash__(self):
return hash(self.vars)
from matchpy.
from matchpy.
New version 0.3.1 with this fix is up on PyPI.
from matchpy.
Thanks
from matchpy.
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from matchpy.