CalcPy

Terminal calculator and advanced math solver using 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
• Evaluation preview while typing
• Currency conversion 10USD (calcpy.base_currency='EUR' to change base currency) (by ECB)
• ? prefix provides some basic analysis of expression (similar to WolframAlpha)
  ?((1,2),(3,4)), ?x**2+1, ?234
• Automatic symbolic variables, anything like x y_1 is a sympy symbol
• Symbolic variables assumptions are uniform, symbols(x, real=True) would change all occurencase of x to be real
• Implicit multiplication (2x, (x+1)(x-1) are valid)
• Nested 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" (by dateparser)
• Sizes KB, MB, GB, TB (e.g. 4MB-32KB)
• Unit prefixes G, M, k, m, u, n, p (4G/3.2n, enable by calcpy.units_prefixes=True)
• Implicit lambda f(a,b):=a**2+b**2
• Latex input diff($\frac{1,x}$) (latex output with latex(1/x))
• Copy to clipboard copy(_) would copy last result
• 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 ^
• Binary and hex input 0b1101, 0xafe1
• Scientific notation 2.12e-6
• Programmer operations // 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.