BlobSet

class lsst.verify.BlobSet(blobs=None)

Bases: lsst.verify.jsonmixin.JsonSerializationMixin

A collection of Blobs.

Parameters

blobslist of lsst.verify.Blobs

Blobs to include in the set.

Attributes Summary

json	A dict that can be serialized as JSON.

Methods Summary

deserialize([blobs])	Create a BlobSet from a parsed JSON dataset.
insert(blob)	Insert a blob into the set.
items()	Iterate over (identifier, Blob) pairs in the set.
jsonify_dict(d)	Recursively build JSON-renderable objects on all values in a dict.
keys()	Get a sequence of blob identifiers, which are keys to the BlobSet.
values()	Get a new view of the BlobSet’s values.
write_json(filepath)	Write JSON to a file.

Attributes Documentation

json

A dict that can be serialized as JSON.

Methods Documentation

classmethod deserialize(blobs=None)

Create a BlobSet from a parsed JSON dataset.

Parameters

blobslist, optional

A list of blob JSON serializations.

Returns

instanceBlobSet

A BlobSet instance.

insert(blob)

Insert a blob into the set.

Parameters

blobBlob

Blob to insert into the set. It can be accessed by key from the BlobSet through its Blob.identifier string.

items()

Iterate over (identifier, Blob) pairs in the set.

Yields

itemtuple

Tuple containing:

• Blob.identifier of the Blob (str)

• Blob instance

static jsonify_dict(d)

Recursively build JSON-renderable objects on all values in a dict.

Parameters

ddict

Dictionary to convert into a JSON-serializable object. Values are recursively JSON-ified.

Returns

json_dictdict

Dictionary that can be serialized to JSON.

Examples

Subclasses can use this method to prepare output in their json-method implementation. For example:

def json(self):
    return JsonSerializationMixin.jsonify_dict({
        'value': self.value,
    })

keys()

Get a sequence of blob identifiers, which are keys to the BlobSet.

Returns

keyssequence of str

Sequence of Blob.identifier.

values()

Get a new view of the BlobSet’s values.

Returns

blobiterable of lsst.verify.Blob

A collection of Blob objects that is updated when this object changes.

write_json(filepath)

Write JSON to a file.

Parameters

filepathstr

Destination file name for JSON output.