https://github.com/cosama/vasapy

Vectorized Associative Arrays for Python
https://github.com/cosama/vasapy

associative-array associative-map dictionary numpy python vectorized

Last synced: about 2 months ago
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Vectorized Associative Arrays for Python

• Host: GitHub
• URL: https://github.com/cosama/vasapy
• Owner: cosama
• License: apache-2.0
• Created: 2020-07-27T20:33:14.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-09-17T23:01:19.000Z (over 4 years ago)
• Last Synced: 2024-11-14T09:35:59.693Z (2 months ago)
• Topics: associative-array, associative-map, dictionary, numpy, python, vectorized
• Language: Python
• Homepage:
• Size: 47.9 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
vasapy - The spice to your daily dose of numpy

=================================================

vasapy, short for 'Vectorized ASsociative Arrays for PYthon' is a lightweight wrapper of [parallel_hashmap](https://github.com/greg7mdp/parallel-hashmap.git)

using [pybind11](https://github.com/pybind/pybind11) to allow for vectorized

operation on dictionaries (and maybe later sets).

The dictionary behave like the python default dictionary with most methods

implemented, but additionally all methods can also use numpy arrays, doing

the iterations over array elements internally in C++ way more efficiently. It

supports most of the numpy types (128/256 byte types are not tested and might

behave unexpectedly).

```python

import vasapy as vp

import numpy as np

keys = np.arange(100)

data = np.random.rand(100)*100

ind = np.arange(10)

# create a dictionary from arrays

d = vp.dict(keys, data)

# key access with array or integer

print(d[ind])

print(d[0])

# setting elements with arrays or integer

d[ind] = np.zeros(len(ind))

d[101] = 0

# accessing elements with default value

ind = np.arange(0, 200)

print(d.get(ind, 0))

```

## Installation

The package is available on pip.

```

pip install vasapy --user

```

If it doesn't build try to install pybind11 `pip install pybind11 --user` and

install the python development files with your package manager.