Documentation/Software-best-practices/MicroPython.md

+# Limitations
+MicroPython does not support the full Python standard library.
+In any shared components (i.e. the protocol part), only a subset of modules can be used.
+In some cases the code needs to be restructured (e.g. to avoid enums), or custom types and wrappers have to be used (e.g. for timestamps).
+
+This is an **excerpt** of Python libraries we cannot use for any shared components:
+ * **enum**: restructure code to avoid
+ * **datetime**: use wrapper/abstract usages
+ * **logging**: try to import, alternatively import logger stub
+ * **typing**: try to import, ignore if import fails (only used for annotation)
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