cirq.ExpressionMap

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A dictionary with sympy expressions and symbols for keys and sympy symbols for values.

cirq.ExpressionMap(
    *args, **kwargs
)

This is returned by cirq.flatten. See ExpressionMap.transform_sweep and ExpressionMap.transform_params.

Methods

transform_params

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transform_params(
    params: cirq.ParamResolverOrSimilarType
) -> cirq.ParamDictType

Returns a ParamResolver to use with a circuit flattened earlier with cirq.flatten.

If params maps symbol a to 3.0 and this ExpressionMap maps a/2+1 to '<a/2 + 1>' then this method returns a resolver that maps symbol '<a/2 + 1>' to 2.5.

See cirq.flatten for an example.

transform_sweep

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transform_sweep(
    sweep: Union[sweeps.Sweep, List[resolver.ParamResolver]]
) -> cirq.Sweep

Returns a sweep to use with a circuit flattened earlier with cirq.flatten.

If sweep sweeps symbol a over (1.0, 2.0, 3.0) and this ExpressionMap maps a/2+1 to the symbol '<a/2 + 1>' then this method returns a sweep that sweeps symbol '<a/2 + 1>' over (1.5, 2, 2.5).

See cirq.flatten for an example.