Python string calculator

Quick overview:

An easily extendable python calculator that evaluates a formula given as string. It supports a wide variety of commonly used operations:

• basic operators: +, -, *, /, //, %, ^
• constants: e, pi
• unary functions: ceil, floor, ln (base e), log (base 10), sqrt
• trigonometric functions: sin, cos, tan, asin, acos, atan

It maintains the operator precedence, e.g., it will always multiply terms if possible before adding others. Integers, floats and values in scientific notation (e.g., 1e-3 for 0.001) are all supported.

Moreover, more may be easily added by appending them on top of the main file in the respective sections.

Installation

• Install it as usual with pip:
  python -m pip install git+https://github.com/tigxy/pycalc.git
• Or from source:
  python -m pip install .

Usage

• Either from the command line: python -m pycalc "2+2"
• Or inside your code

from pycalc import solve
result = solve("2 + 2")
print(result) # 4.0

Why?

Mostly a fun little side project as I have been wondering how to best parse and evaluate a mathematical formula. In case you have any real use-case, please let me know!

Feel free to create an issue or a PR in case you would like some additional functionality.

License

MIT License - see the LICENSE file for more details.