idanpa / calcpy

Terminal calculator and advanced math solver using Python, IPython and SymPy

CalcPy

Calculator and advanced math solver in the comfort of your terminal by Python, IPython and SymPy.

Usage

Examples · Try online

Installation

Prerequisites - Python

pip install git+https://github.com/idanpa/calcpy

(no git? use pip install https://github.com/idanpa/calcpy/archive/main.zip)
Android installation

Features

• Display both symbolic and numeric solutions
• Integers displayed as decimal, hex and binary (control size with calcpy.bitwidth)
• Evaluation preview while typing
• Currency conversion 10USD (calcpy.base_currency='EUR' to change base currency)
• ? prefix would provide some basic analysis of expression (similar to WolframAlpha)
  ?((1,2),(3,4)), ?x**2+1, ?234
• Implicit multiplication (2x, (x+1)(x-1) are valid)
• Tuples are matrices ((1,2),(3,4))**2
• All variables and functions are restored between sessions (delete using del)
• Datetime calculations d"yesterday at 9 am" - d"1990-1-30 9:20" (using dateparser)
• Unit prefixes G, M, k, m, u, n, p, KB, MB, GB, TB (so 4MB-32KB or 4G/3.2n are valid)
• Implicit lambda f(a,b):=a**2+b**2
• Latex input plot($\frac{1,x}$) (latex output with latex(1/x))
• Copy to clipboard copy(Out[12])
• Automatic symbols, anything like x y_1 would become sympy symbol
• Custom user startup (for imports, etc.) edit_user_startup()
• Persistent configuration, see options with calcpy?

SymPy:

• All the elementary (and non-elementry) math functions and constants - ln, sin, e, pi etc.
• Calculus, algebra, plotting - diff, integrate, limit, Sum, solve, plot, plot_implicit etc.

IPython:

• Get last result with _, get specific cell _12 (Out[12] works too)
• func_name? show docs for func_name
• who/who_ls see all defined variables
• Prompt history with up/down, search with ctrl+r
• Autocomplete with tab
• Edit code on editor with %edit func_name

Python:

• All the basic arithmetic +,-,*,/,** or ^
• Complex numbers 1+2i, binary 0b1101, hex 0xafe1, scientific notation 2.12e-6
• Programmer: 0b10 binary input, 0x1F hexadecimal input, // integer division, % modulo, & bitwise AND, | bitwise OR, ^^ bitwise XOR (on calcpy ^ is exponentiation, disable with calcpy.caret_power), ~ bitwise not, >>/<< right/left shift.

Contributing

Feel free to open an issue for bugs/features, send a pull request or star.