vn.py项目文档
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.. toctree::
   :maxdepth: 2

   introduction.md
   install.md
   quickstart.md
   csv_loader.md
   cta_strategy.md
   cta_backtester.md
   data_recoder.md
   algo_trader.md
   script_trader.md
   rpc_service.md
   gateway.md
   database.md
   rpc.md
   contribution.md