moonstream/clients/python

Moonstream Python client

This is the Python client library for the Moonstream API.

Installation

This library assumes you are using Python 3.6 or greater.

Install using pip:

pip install moonstream

Usage

• Source environment variable with access token to Moonstream, you can create one on page https://moonstream.to/account/tokens/

access_token = os.environ.get("MOONSTREAM_ACCESS_TOKEN")

• Create an object of Moonstream client and authorize

mc = Moonstream()
mc.authorize(access_token)

create_stream method

Return a stream of event for time range.

From timestamp to None, from bottom to top

When end_time is not set.

for events in mc.create_stream(
    start_time=1637834400, end_time=None, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

In this case we will be receiving events from bottom of history to recent time in next order:

[1637836177, ..., 1637834440]
[1637837980, ..., 1637836226]
# Until we will get latest event,
# then we will be receiving empty lists
[]
[]
# Until new events will be available
[1637839306, 1637839306, 1637839306, 1637839306]
[]
# Continuing...

From timestamp to timestamp, from top to bottom

When start_time is greater then end_time.

for events in mc.create_stream(
    start_time=1637839281, end_time=1637830890, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

Stream of event packs will be generating from recent timestamp to older and inner list of transactions for each pack will be in most recent to older event timestamp range:

[1637839280, ..., 1637838094]
[1637838086, ..., 1637836340]
...
[1637834488, ..., 1637832699]
[1637832676, ..., 1637830903]

From timestamp to timestamp, from bottom to top

When start_time is less then end_time.

for events in mc.create_stream(
    start_time=1637830890, end_time=1637839281, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

You start receiving list of older events from bottom of history to newest:

[1637832676, ..., 1637830903]
[1637834488, ..., 1637832699]
...
[1637838086, ..., 1637836340]
[1637839280, ..., 1637838094]