{"metadata":{"kernelspec":{"language":"python","display_name":"Python 3","name":"python3"},"language_info":{"pygments_lexer":"ipython3","nbconvert_exporter":"python","version":"3.6.4","file_extension":".py","codemirror_mode":{"name":"ipython","version":3},"name":"python","mimetype":"text/x-python"}},"nbformat_minor":4,"nbformat":4,"cells":[{"cell_type":"markdown","source":"# 数据类型装换","metadata":{}},{"cell_type":"code","source":"import pandas as pd\n\na=pd.read_csv('../input/big-data-derby-2022/nyra_2019_complete.csv',low_memory=False)\nb=pd.read_csv('../input/big-data-derby-2022/nyra_race_table.csv')\nc=pd.read_csv('../input/big-data-derby-2022/nyra_start_table.csv')\nd=pd.read_csv('../input/big-data-derby-2022/nyra_tracking_table.csv')\n\na.to_parquet('./nyra_2019_complete.parquet')\nb.to_parquet('./nyra_race_table.parquet')\nc.to_parquet('./nyra_start_table.parquet')\nd.to_parquet('./nyra_tracking_table.parquet')","metadata":{"_uuid":"8f2839f25d086af736a60e9eeb907d3b93b6e0e5","_cell_guid":"b1076dfc-b9ad-4769-8c92-a6c4dae69d19","execution":{"iopub.status.busy":"2022-08-21T12:24:16.722691Z","iopub.execute_input":"2022-08-21T12:24:16.723140Z","iopub.status.idle":"2022-08-21T12:24:16.745644Z","shell.execute_reply.started":"2022-08-21T12:24:16.723066Z","shell.execute_reply":"2022-08-21T12:24:16.745054Z"},"trusted":true},"execution_count":null,"outputs":[]}]}