| Due to unexpected compatibility issues discovered during downstream beta | |
| testing, reverted :issue:`29463`. ``docstring`` field is removed from Module, | |
| ClassDef, FunctionDef, and AsyncFunctionDef ast nodes which was added in | |
| 3.7a1. Docstring expression is restored as a first statement in their body. | |
| Based on patch by Inada Naoki. |