Available on crate feature 
hashbrown only.Expand description
Conversions to and from hashbrown’s
HashMap and HashSet.
§Setup
To use this feature, add this to your Cargo.toml:
[dependencies]
# change * to the latest versions
hashbrown = "*"
pyo3 = { version = "0.25.0-dev", features = ["hashbrown"] }Note that you must use compatible versions of hashbrown and PyO3. The required hashbrown version may vary based on the version of PyO3.