Shaman - Programming Language Detector

When you input code, Shaman detects its language.

Languages supported: ASP, Bash, C, C#, CSS, HTML, Java, JavaScript, Objective-c, PHP, Python, Ruby, SQL, Swift, and XML.

Shaman is implemented with Bayes Classification and pre-defined RegEx patterns. Pre-trained model is included in the library, where the size of the model is 214KB.

The accuracy of the included model is 78% with the test set and 83% with the training set. See accuracy section for detail.

Getting Started

How to install

$ pip install shamanld

How to use

from shamanld import Shaman

code = """
#include <stdio.h>
int main() {
    printf("Hello world");
}
"""

r = Shaman.default().detect(code)

print(r)
# [('c', 42.60959840702781), ('objective-c', 8.535893087527496), ('java', 7.237626324587697), ...]

Test and train with your custom dataset

Shaman supports training the model with your custom dataset easily. The only thing you have to prepare is to make your dataset with CSV format. CSV file should include "language,code" pairs.

Test with custom dataset

$ shaman-tester path/to/test_set.csv

Training a new model with custom dataset

$ shaman-trainer path/to/training_set.csv --model-path path/to/your_model.json.gz

Testing custom model

$ shaman-trainer path/to/test_set.csv --model-path path/to/your_model.json.gz

Using custom model on the code

from shamanld import Shaman

detector = Shaman('path/to/your_model.json.gz')
detector.detect('/* some code */')

Accuracy

Included model is trained with 120K codes and tested with 42K codes. Only the codes whose lengths are more than 100 are used in both training & testing. As the codes are collected without verification, there might be some data with wrong labels.

Language	Accuracy
Total	78.40% (36428 / 46464)
c	70.41% (11479 / 16304)
java	90.24% (8094 / 8969)
python	92.85% (5230 / 5633)
javascript	63.08% (2782 / 4410)
sql	80.92% (2519 / 3113)
html	83.99% (2156 / 2567)
c#	84.08% (1753 / 2085)
xml	80.18% (635 / 792)
bash	83.58% (560 / 670)
swift	83.25% (522 / 627)
php	73.09% (315 / 431)
css	68.12% (203 / 298)
objective-c	32.88% (121 / 368)
asp	36.75% (43 / 117)
ruby	20.00% (16 / 80)

JavaScript version

JavaScript inference implementation is available at Prev/shamanjs.