qml.data.AttributeInfo

class AttributeInfo(attrs_bind=None, **kwargs)

Bases: collections.abc.MutableMapping

Contains metadata that may be assigned to a dataset attribute. Is stored in the HDF5 object’s attrs dict.

attrs_bind

The HDF5 attrs dict that this instance is bound to, or any mutable mapping

Type

collections.abc.MutableMapping[str, Any]

\*\*kwargs

Extra metadata to include. Must be a string, number or numpy array

Attributes

attrs_namespace
doc	Documentation for this attribute.
py_type	String representation of this attribute's python type.
attrs_bind

attrs_namespace = 'qml.data'

doc

Documentation for this attribute.

py_type

String representation of this attribute’s python type.

attrs_bind

Methods

bind_key(_AttributeInfo__name)	Returns __name dot-prefixed with attrs_namespace.
clear()
get(key[, default])	Retrieves the corresponding layout by the string key.
items()
keys()
load(info)	Inserts the values set in info into this instance.
pop(k[,d])	If key is not found, d is returned if given, otherwise KeyError is raised.
popitem()	as a 2-tuple; but raise KeyError if D is empty.
save(info)	Inserts the values set in this instance into info.
setdefault(k[,d])
update([E, ]**F)	If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v
values()

classmethod bind_key(_AttributeInfo__name)

Returns __name dot-prefixed with attrs_namespace.

clear() → None.  Remove all items from D.

get(key, default=None)

Retrieves the corresponding layout by the string key.

When there isn’t an exact match, all the existing keys in the layout map will be treated as a regex and map against the input key again. When there are multiple matches for the regex, an ValueError will be raised. Returns None if there isn’t any match found.

Parameters

key – String key to query a layout.

Returns

Corresponding layout based on the query.

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

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

load(info)

Inserts the values set in info into this instance.

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

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

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

save(info)

Inserts the values set in this instance into info.

setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D

update([E, ]**F) → None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → an object providing a view on D's values

code/api/pennylane.data.AttributeInfo

 

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