jason810496 opened a new pull request, #42902:
URL: https://github.com/apache/airflow/pull/42902

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   closes: #42796
   
   After reproducing the issue, I found that the generated DAG file looks like 
this:
   ```python
   import types
   
   unusual_prefix_3f65a6a886883f41209c142108053b32fdfbaf99_my-dag  = 
types.ModuleType("unusual_prefix_3f65a6a886883f41209c142108053b32fdfbaf99_my-dag")
   
   
unusual_prefix_3f65a6a886883f41209c142108053b32fdfbaf99_my-dag.callable_virtualenv
 = callable_virtualenv
   
   
sys.modules["unusual_prefix_3f65a6a886883f41209c142108053b32fdfbaf99_my-dag"] = 
unusual_prefix_3f65a6a886883f41209c142108053b32fdfbaf99_my-dag
   
   # ...
   ```
   Replace the hyphen with dash in original module name to solve this issue.


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