Function get_unary_expression

python/pathway/internals/operator_mapping.py:67–73

(expr, op, expr_dtype: dt.DType, default=None)

def get_unary_expression(expr, op, expr_dtype: dt.DType, default=None):
    op_engine = _unary_operators_to_engine.get(op)
    if op_engine is None:
        return default
    expr_dtype_engine = expr_dtype.to_engine()
    expression = api.Expression.unary_expression(expr, op_engine, expr_dtype_engine)
    return expression if expression is not None else default


_binary_operators_mapping: BinaryOperatorMapping = {