As I mentioned at #1017 (comment) , having optional arguments in WebClient method signature would be even more helpful for developers. If we do this, all the methods should be consistent about it.

To: external contributors

If you are interested in working on this, all the things to do this are:

• Modify https://github.com/slackapi/python-slack-sdk/blob/main/slack_sdk/web/client.py to add optional arguments in methods
  • The arguments must have their default values (None should work for most cases)
  • If the types of the arguments are (list, Tuple ), do the same with the existing methods
  • Update the method comments correspondingly
• Make sure https://github.com/slackapi/python-slack-sdk/blob/main/tests/slack_sdk_async/web/test_web_client_coverage.py does not fail due to your changes. If some fail, it means you're breaking backward-compatibility
• No need to update the following API methods as they are deprecated or aren't available anymore
  • channels.*
  • groups.*
  • im.*
  • mpim.*
• Run https://github.com/slackapi/python-slack-sdk/blob/main/scripts/run_validation.sh before submitting your pull request. Particularly, python setup.py codegen synchronizes your changes to other async/legacy Web API clients.

Category (place an x in each of the [ ])

• slack_sdk.web.WebClient (sync/async) (Web API client)
• slack_sdk.webhook.WebhookClient (sync/async) (Incoming Webhook, response_url sender)
• slack_sdk.models (UI component builders)
• slack_sdk.oauth (OAuth Flow Utilities)
• slack_sdk.socket_mode (Socket Mode client)
• slack_sdk.audit_logs (Audit Logs API client)
• slack_sdk.scim (SCIM API client)
• slack_sdk.rtm (RTM client)
• slack_sdk.signature (Request Signature Verifier)

Requirements

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