tqchen opened a new issue #4812: [RFC] TVM Python Project Organization after 
Unified IR
URL: https://github.com/apache/incubator-tvm/issues/4812
 
 
   This RFC summarizes discussion in 
https://discuss.tvm.ai/t/tvm-python-project-organization-after-unified-ir/5383
   
   We will perform the following changes to the python project.
   
   ##  Introduce Namespaces to Reflect the C++ folder structure
   
   - _ffi FFI related logics
   - runtime runtime data structures and APIs
      - We should be able to run TVM runtime by only taking _ffi and runtime 
folder
   - relay
   - tir
   - target
   - te
   
   ## FFI function exposure convention
   Expose all ffi functions under a special _ffi file under the same namespace, 
initialize with prefix tvm.relay.op., use relative import
   
   ```python
   # file: tvm/relay/op/transform.py
   
   from . import _ffi
   
   def add():
     return _ffi.add()
   ```
   
   ## Upgrade Path
   
   - As a first step, we will keep things as backward compatible as possible by 
re-exposing the names to the top-level. 
   - Then we will refer to the new names in the new namespace when necessary.

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