[ReleasePR billing] Update readme.python.md#2042

Merged

azcloudfarmer merged 1 commit intoAzure:mainfrom AzureSDKAutomation:sdkAuto/billing

Apr 27, 2022

Commits on Mar 15, 2022

CodeGen from PR 18202 in Azure/azure-rest-api-specs

SDKAuto
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