minicalculatorinterpreter's Introduction

Mini Calculator Interpreter

Tiny calculator interpreter supporting Mathematical functions using Python.

Features

Variable
Mathematical Constants
Mathematical Functions

Mathematical Constants

Mathematical Functions

sin
cos
log
log10
log2
exp
sqrt
acos
atan
radians
sinh
cosh
tanh
asin
ceil
fabs
factorial
floor
copysign
pow

Download

git clone https://github.com/BaseMax/MiniCalculatorInterpreter
cd MiniCalculatorInterpreter
sudo pip3 install ply
python calculator.py

Grammar

S -> statement

statement -> NAME EQUALS expression
statement -> expression

expression -> expression PLUS expression
expression -> expression MINUS expression
expression -> expression DIVIDE expression
expression -> expression TIMES expression
expression -> MINUS expression
expression -> LPAREN expression RPAREN

expressions -> expressions COLON expression
expressions -> expression
expressions -> <empty>

expression -> NAME LPAREN expressions RPAREN
expression -> NUMBER_INT
expression -> NUMBER_DOUBLE
expression -> NAME

Using

> 5+5
10
> 5*6
30
> pow(5,2)
25.0
> pi*2  
6.283185307179586
> e/2
1.3591409142295225
> log10(10)
1.0
> badFunction(10)
Undefined function 'badFunction'
None
> log2(10)
3.321928094887362
> log(10)
2.302585092994046
> test=5+6+sin(pi/2)
> test*test+5
149.0
> test=test*5
> test
60.0

Acknowledgments

It's been a few years since I have worked with the ply library And I really forgot about that name. Professor Ahmad Yoosofan was the one who reminded me of this library again. Thanks so much. (Video: Working with ply on YouTube)