antlr4 with python(interface is not good as Java)

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antlr4 with python

1. install python
2. config antlr4(need JDK)
3. write you parser syntax and verify it
4. convert to python and install python runtime
   pip install antlr4-python3-runtime
5. write you customer listener to do your work

antlr4 token priority
https://stackoverflow.com/questions/29777778/antlr-4-5-mismatched-input-x-expecting-x