pg_utils.numerics.io.CompactArrayJSONEncoder

class pg_utils.numerics.io.CompactArrayJSONEncoder(*args, **kwargs)

Bases: JSONEncoder

A Json encoder that puts long arrays on one line

This encoder is adopted from the encoder written by Jannismain for compressing small containers on single lines.

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)
default(o)	Implement this method in a subclass such that it returns a serializable object for o, or calls the base implementation (to raise a TypeError).
encode(o)	Encode JSON
iterencode(o[, _one_shot])	Encode the given object and yield each string representation as available.

Attributes

CONTAINER_TYPES
SINGLELINE_THRESHOLD
indent_str
item_separator
key_separator

default(o)

Implement this method in a subclass such that it returns a serializable object for o, or calls the base implementation (to raise a TypeError).

For example, to support arbitrary iterators, you could implement default like this:

def default(self, o):
    try:
        iterable = iter(o)
    except TypeError:
        pass
    else:
        return list(iterable)
    # Let the base class default method raise the TypeError
    return JSONEncoder.default(self, o)

encode(o) → str

Encode JSON

iterencode(o, _one_shot=False)

Encode the given object and yield each string representation as available.

For example:

for chunk in JSONEncoder().iterencode(bigobject):
    mysocket.write(chunk)