To convert JSON data to YAML format, use the command python csv2json2yaml.py json2yaml input_file.json output_file.yaml, replacing input_file.json with the path to your JSON file and output_file.yaml with the desired output file name.
To convert CSV data to JSON format with grouping, use the command python csv2json2yaml.py csv2json mycsv.csv --groupby column1,column2 --output name.json, replacing mycsv.csv with the path to your CSV file, column1,column2 with the column names you want to group by (separated by commas), and name.json with the desired output file name.
The script now checks the command provided and executes the corresponding functionality: 'json2yaml' or 'csv2json'.
Please note that the script assumes the JSON data is in a valid format and matches the structure expected for conversion to YAML or grouping from CSV to JSON.