Update readme.python.md (#29587)

* Update readme.python.md

* Create readme.python.md

Author: msyyc

specification/migrate/resource-manager/readme.md

@@ -318,6 +318,7 @@ This is not used by Autorest itself.
 swagger-to-sdk:
   - repo: azure-sdk-for-net-track2
   - repo: azure-sdk-for-go
+  - repo: azure-sdk-for-python
   - repo: azure-sdk-for-js
   - repo: azure-sdk-for-node
   - repo: azure-resource-manager-schemas
@@ -327,3 +328,7 @@ swagger-to-sdk:
 ## Go
 
 See configuration in [readme.go.md](./readme.go.md)
+
+## Python
+
+See configuration in [readme.python.md](./readme.python.md)

specification/migrate/resource-manager/readme.python.md

@@ -0,0 +1,23 @@
+## Python
+
+These settings apply only when `--python` is specified on the command line.
+Please also specify `--python-sdks-folder=<path to the root directory of your azure-sdk-for-python clone>`.
+
+``` yaml $(python)
+azure-arm: true
+license-header: MICROSOFT_MIT_NO_VERSION
+package-name: azure-mgmt-migrate
+namespace: azure.mgmt.migrate
+package-version: 1.0.0b1
+clear-output-folder: true
+```
+
+``` yaml $(python)
+no-namespace-folders: true
+output-folder: $(python-sdks-folder)/migrate/azure-mgmt-migrate/azure/mgmt/migrate
+```
+
+``` yaml $(python)
+modelerfour:
+  flatten-models: false
+```