cirq.ExpressionMap

A dictionary with sympy expressions and symbols for keys and sympy

cirq.ExpressionMap(
    *args, **kwargs
)

symbols for values.

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

Methods

`clear`

clear()

D.clear() -> None. Remove all items from D.

`copy`

copy()

D.copy() -> a shallow copy of D

`fromkeys`

fromkeys(
    value, /
)

Create a new dictionary with keys from iterable and values set to value.

`get`

get(
    key, default, /
)

Return the value for key if key is in the dictionary, else default.

`items`

items()

D.items() -> a set-like object providing a view on D's items

`keys`

keys()

D.keys() -> a set-like object providing a view on D's keys

`pop`

pop()

D.pop(k[,d]) -> v, remove specified key and return the corresponding value.

If key is not found, default is returned if given, otherwise KeyError is raised

`popitem`

popitem()

Remove and return a (key, value) pair as a 2-tuple.

Pairs are returned in LIFO (last-in, first-out) order. Raises KeyError if the dict is empty.

`setdefault`

setdefault(
    key, default, /
)

Insert key with a value of default if key is not in the dictionary.

Return the value for key if key is in the dictionary, else default.

`transform_params`

View source

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.

Args
`params`	The params to transform.

`transform_sweep`

View source

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.

Args
`sweep`	The sweep to transform.

`update`

update()

D.update([E, ]**F) -> None. Update D from dict/iterable E and F. If E is present and has a .keys() method, then does: for k in E: D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]

`values`

values()

D.values() -> an object providing a view on D's values

`contains`

__contains__(
    key, /
)

True if the dictionary has the specified key, else False.

`eq`

__eq__(
    value, /
)

Return self==value.

`ge`

__ge__(
    value, /
)

Return self>=value.

`getitem`

__getitem__()

x.getitem(y) <==> x[y]

`gt`

__gt__(
    value, /
)

Return self>value.

`iter`

__iter__()

Implement iter(self).

`le`

__le__(
    value, /
)

Return self<=value.

`len`

__len__()

Return len(self).

`lt`

__lt__(
    value, /
)

Return self<value.

`ne`

__ne__(
    value, /
)

Return self!=value.

`or`

__or__(
    value, /
)

Return self|value.

`ror`

__ror__(
    value, /
)

Return value|self.