Forgot to remove a isalpha
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@ -186,8 +186,7 @@ class Render(object):
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"""
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"""
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return type(exp) == int \
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return type(exp) == int \
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or type(exp) == Fraction \
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or type(exp) == Fraction
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or exp.isalpha()
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def isOperator(self, exp):
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def isOperator(self, exp):
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"""Check if the expression is in self.operators
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"""Check if the expression is in self.operators
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