polars-xdt
eXtra stuff for DateTimes
eXtra stuff for DateTimes in Polars.
- ✅ blazingly fast, written in Rust
- ✅ convert to and from multiple time zones
- ✅ format datetime in different locales
- ✅ convert to Julian Dates
- ✅
time-based EWMA(upstreamed to Polars itself) - ✅
custom business-day arithmetic(upstreamed to Polars itself)
Installation
First, you need to install Polars.
Then, you'll need to install polars-xdt:
pip install polars-xdt
Read the documentation for a more examples and functionality.
Basic Example
Say we start with
from datetime import datetime
import polars as pl
import polars_xdt as xdt
df = pl.DataFrame(
{
"local_dt": [
datetime(2020, 10, 10, 1),
datetime(2020, 10, 10, 2),
datetime(2020, 10, 9, 20),
],
"timezone": [
"Europe/London",
"Africa/Kigali",
"America/New_York",
],
}
)
Let's localize each datetime to the given timezone and convert to UTC, all in one step:
result = df.with_columns(
xdt.from_local_datetime(
"local_dt", pl.col("timezone"), "UTC"
).alias("date")
)
print(result)
shape: (3, 3)
┌─────────────────────┬──────────────────┬─────────────────────────┐
│ local_dt ┆ timezone ┆ date │
│ --- ┆ --- ┆ --- │
│ datetime[μs] ┆ str ┆ datetime[μs, UTC] │
╞═════════════════════╪══════════════════╪═════════════════════════╡
│ 2020-10-10 01:00:00 ┆ Europe/London ┆ 2020-10-10 00:00:00 UTC │
│ 2020-10-10 02:00:00 ┆ Africa/Kigali ┆ 2020-10-10 00:00:00 UTC │
│ 2020-10-09 20:00:00 ┆ America/New_York ┆ 2020-10-10 00:00:00 UTC │
└─────────────────────┴──────────────────┴─────────────────────────┘
Read the documentation for more examples!
Logo
Thanks to Olha Urdeichuk for the illustration.
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