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Update error message when invalid sympy arg is serialized #5487

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Merged
merged 2 commits into from
Jun 13, 2022
Merged

Update error message when invalid sympy arg is serialized #5487

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31bcd01
Update error message when invalid sympy arg is serialized
verult Jun 11, 2022
43f531d
Merge branch 'master' into cg-sympy-gates-doc
CirqBot Jun 13, 2022
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6 changes: 5 additions & 1 deletion cirq-google/cirq_google/serialization/arg_func_langs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -190,7 +190,11 @@ def check_support(func_type: str) -> str:
for arg in value.args:
arg_to_proto(arg, arg_function_language=arg_function_language, out=msg.func.args.add())
else:
raise ValueError(f'Unrecognized arg type: {type(value)}')
raise ValueError(
f"Unrecognized Sympy expression type: {type(value)}."
" Only the following types are recognized: 'sympy.Symbol', 'sympy.Add', 'sympy.Mul',"
" 'sympy.Pow'."
)


def float_arg_from_proto(
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