matplotlib 
future
chardet
openpyxl ;    python_version>"3.0"
numpy>=1.16.5; python_version>"3.0"
numpy        ; python_version<"3.0"
pandas>=1.0.1; python_version>"3.0"
pandas; python_version<="3.0"
xlrd==1.2.0; python_version<"3.0"
pyarrow # for parquet files
scipy
