This is a python module that extends numpy array to be able to have column names to index with
Project description
named_array
This is a python module that extends numpy array to be able to have column names to index with.
Installation
pip install named_array
Note that you need to have numpy installed already to use this module.
Usage
import numpy as np
from named_array import named_array
# the keyword arguments for named_array are exactly the same with numpy array,
# but with an extra keyword `colnames`, which is a list of the column names for each column
A = named_array([[1,2,3],[4,5,6]], colnames=['a', 'b', 'c'])
>>> A
named_array([[1, 2, 3],
[4, 5, 6]])
# you can index a column by name
>>> A['a']
named_array([1, 4])
# you can extract several columns as a new array
# by a tuple or a list of column names
>>> A['a', 'b']
array([[1, 2],
[4, 5]])
>>> A[['a', 'b']]
array([[1, 2],
[4, 5]])
# set the column names of the named_array
A.set_colnames(['a1', 'b1', 'c1'])
# you can also put a numpy array into the name_array constructor
# and turn it into a named_array
B = np.array([[1,2,3],[4,5,6]])
C = named_array(B, colnames=['a', 'b', 'c'])
# the column name could also be a tuple, where the first element is the column name,
# the second element is the number of columns the column name spans
A = named_array([[1,2,3],[4,5,6]], colnames=['a', ('b', 2)])
>>> A['b']
named_array([[2, 3],
[5, 6]])
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
named_array-0.11.tar.gz
(11.9 kB
view details)
File details
Details for the file named_array-0.11.tar.gz
.
File metadata
- Download URL: named_array-0.11.tar.gz
- Upload date:
- Size: 11.9 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/3.7.1 importlib_metadata/4.10.0 pkginfo/1.8.2 requests/2.27.0 requests-toolbelt/0.9.1 tqdm/4.62.3 CPython/3.7.5
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | 299a13cd84e7a47125d92890e567c8ac98ba32dde7996c4d50ce2d581bcb0f07 |
|
MD5 | 8fc1b8658e0268fa49adfcadef17cefb |
|
BLAKE2b-256 | 1a675afb13674d6d5a2a7ed57d924cb470d7f191bb9787af9b0b43af6f7c588d |