meth: A mathematical expression parser.

A python package to parse and evaluate mathematical expressions.

Installation

pip install meth

or install it from source:

git clone https://github.com/sertdfyguhi/meth/
cd meth
python3 -m build
pip install dist/*.whl

Examples

More examples in the examples/ directory.

import meth

# tokenizing equations
meth.tokenize("5 + 2") # INT(5), PLUS, INT(2)

# parsing equations
meth.parse("2 * 10") # BinaryOpNode(INT(2), MUL, INT(10))

# evaluating equations
meth.evaluate("2 + 2") # 4
meth.evaluate("sqrt(9)") # 3

# evaluation with variables
evaluator = meth.Evaluator()
evaluator.evaluate("x = 5")
evaluator.evaluate("x") # 5

Todo

• Lexer
• Parser
  • Bracketing
  • Multiplication using brackets
  • Negative Numbers
  • Variables
  • Functions
• Interpreter
  • Binary Operations
  • Unary Operations
  • Variables
  • Functions
• Add mathematical functions
• Accurate float calculations
• Simplify an expression
• Expand an expression
• AST to Equation String
• Documentation
• Publish to PyPI