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Add, document is_expression #170

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Merged
merged 1 commit into from
Dec 20, 2024
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Add, document is_expression #170

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12 changes: 12 additions & 0 deletions pymbolic/primitives.py
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,8 @@

.. autofunction:: is_zero
.. autofunction:: is_constant
.. autofunction:: is_expression
.. autofunction:: is_arithmetic_expression
.. autofunction:: flattened_sum
.. autofunction:: flattened_product
.. autofunction:: register_constant_class
Expand Down Expand Up @@ -1897,6 +1899,16 @@ def is_number(value: object) -> TypeIs[Number]:
and isinstance(value, VALID_CONSTANT_CLASSES))


def is_expression(value: object) -> TypeIs[_Expression]:
"""
.. versionadded:: 2024.2.3
"""
if isinstance(value, tuple):
return all(is_expression(vi) for vi in value)
else:
return isinstance(value, VALID_OPERANDS) or is_constant(value)


def is_valid_operand(value: object) -> TypeIs[_Expression]:
return isinstance(value, VALID_OPERANDS) or is_constant(value)

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