2.0.0

[2.0.0] - 2022-03-09

Added

• New modules for each API as part of a restructuring effort: inverse_perpetual.py, usdt_perpetual.py, spot.py, and more
  • see the README for how to import these new modules
  • HTTP and WebSocket classes within each applicable module
  • These classes use inheritance to reflect the structure of the Bybit APIs - due to the division of endpoints along the lines of different market types
  • This means that different classes can share their common endpoints, such as api_key_info(), whilst keeping their distinctive endpoints like get_active_order() separate

Changed

• WebSocket functionality to use callbacks instead of polling
  • This means that instead of polling ws.fetch() for your latest websocket messages, you can now simply define a function (my_callback_function), and pass this as an argument upon subscribing to your chosen topic
    • see the example file for more information
  • This also removes the need to remember topic names and JSON formats, as you now directly call a class method to subscribe
  • There is also a custom_topic_stream method which can be used if a new websocket topic has been released by Bybit, but it's not been added to pybit yet
• HTTP classes will now instantiate a new HTTP session for each API (Spot (spot.HTTP), Account Asset (account_asset.HTTP), etc)
  • this is due to the restructuring of pybit to use class inheritance
• Generally, the restructuring has allowed a great amount of segregation of the internal code to occur, which will allow for easier future development

Removed

• The WebSocket class from the __init__.py file, which was imported like so: from pybit import WebSocket
  • This is because of the aforementioned functionality changes, which also have the potential to improve performance (as a core no longer needs to be occupied polling ws.fetch())
• However, the HTTP class was not removed from __init__.py in an effort to provide a unified alternative
  • Despite this, we would recommend preferring the market-specific modules