Python Support

Given that python is leading language for ML and many new interesting supports is coming from the language, therefore it was needed that we have built in support for such python code execution. However, following are the conditions that we wanted to apply.

Python runs in single threaded manner, but we like parallel execution
Run python code in separate process. If process creation fails then run in thread
Read return data from python process
Keep status of the process for reporting
Python 2.7 and 3 support
BangDB should compile and run with or without python - provide a switch

Currently the SVM doesn't require python, but IE may need it. Therefore, need to compile BangDB accordingly

Input file format

For training and even for prediction, user may like to send data in different formats. Therefore, we needed simple mechanism to handle this. We have separate interface "iqconvert" defined, which has following APIs

int convert(char *infile, char *outfile);

 int convert(FILE *finfile, FILE *foutfile);

Currently it's implemented for csv and json to libsvm format converters. Developer should implement this for new conversion logic as appropriate