PScript (Probabilistic Script)

PScript (Probabilistic Script) is a programming language designed to facilitate the implementation and execution of probabilistic models and computations. It provides a set of syntax and constructs that allow developers to express and manipulate probabilistic distributions, statistical models, and inference algorithms in a concise and intuitive manner.

• It was build using PLY (Python lex yacc).
• Previous work that was used to build this project can be found as SigmaScript, a project developed by members of the current team.

Features

• Basic arithmetic operations
• Basic logical operations
• Basic conditional statements
• Basic loops (while)
• Basic functions
• Basic multidimensional arrays
• Basic variables without type inference
• Basic probability distributions (Exponential, Normal, Uniform, Poisson, Geometric)
• Stochastic variables (when the variable is called, always returns different values)
• Stochastic arrays (when the array is called, always returns different values)
• Console input and output
• File input and output un txt format with PScript syntax

How to use

1. Clone this repository using :

   git clone https://github.com/jumorap/PScript
   

2. Move into the repository using:

   cd PScript
   

3. Install the required packages using:

   pip install -r requirements.txt
   

4. Write PScript in the scripts folder and save it as <file_name>.psc.

5. Run your code using :

   python3 pscript.py scripts/<file_name>.psc -t
   

   where -t is a flag to show each token generated by the lexer.

   • To only show the output of the program you can also run the code using:

     python3 pscript.py scripts/<file_name>.psc
     

   • To write and run PScript code through the terminal line by line you can also run the code using:

     python3 pscript.py
     

NOTE:

• The scripts folder contains some examples of PScript code.
• You can run some examples of PScript using:

  python3 pscript.py scripts/while_bucle.psc