structured-array
Efficient manipulation of the numpy structured arrays.
Installation
pip install structured-array
Examples
A structured array can easily be created.
import structured_array as st
arr = st.array({
"label": ["a", "b", "c"],
"value": [4, 5, 6],
"array": [np.zeros(3), np.ones(3), np.zeros(3)],
})
arr
label value array
[<U1] [<i8] [<f8]
------- ------- ----------
a 4 (3,) array
b 5 (3,) array
c 6 (3,) array
You can directly read and write the structured array from/to a npy file.
arr = st.read_npy("data.npy")
structured-array use polars expression system
to manipulate the structured array.
arr.select("label", st.col("value") + 1) # column selection
arr.group_by("label").agg(st.col("value").sum()) # aggregation
arr.filter(st.col("value") > 5) # filtering
License
structured-array is distributed under the terms of the MIT license.
1 maintainer
Metadata
1 maintainer
Release files for structured-array 0.0.1
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