A rust dataframes library similar to Pandas.
# Compilation Error: undeclared type DataType in polars-expr when using pyo3-polars with dtype-full feature
As per this github ticket you need to enable the timezones feature in cargo:
cargo add polars --features lazy,timezonesno method named str found for enum Expr in the current scope
strings feature needs to be enabled for the library
cargo add polars --features strings