# Smart calculator in Python

Python Methods and Functions | smart calculator in

Examples :

`  Input:  Hi calculator plz find the lcm of 4 and 8.  Output:  8  Input:  Hi smart plz find the multiplication of 3 and 9.  Output:  27  Input:  Hi smart plz end the program.  Output:  Thanks for enjoy with me. `

Code: Python code for smart calculation

 ` # main Python program ` ` response ` ` = ` ` [` ` 'Welcome to smart calculator' ` `, ` `' My name is MONTY' ` `, ` ` 'Thanks for enjoy with me' ` `, ` ` 'Sorry, this is beyond my ability' ` `] `   ` # extract tokens from text command ` ` def ` ` extract_from_text (text): ` ` ` ` l = [] `` for t in text.split ( '' ): try : l.append ( float (t)) except ValueError: pass return l   # LCM calculation def lcm (a, b): L = a if a & gt; b else b while L & lt; = a * b:   if L % a = = 0 and L % b = = 0 : return L   L + = 1   # HCF calculation def hcf (a, b): H = a if a & lt; b else b   while H & gt; = 1 :  if a % H = = 0 and b % H = = 0 : return H   H - = 1   # Addition def add (a, b): return a +  b   # Subtraction def sub (a, b): return a - b   # Multiplication def mul (a, b): return a * b   # Department def div (a, b): `` return a / ` ` b `   ` # Remainder ` ` def ` ` mod (a, b): ` ` return ` ` a ` `% ` ` b `   ` # Reply to the command ` ` # print - "Thanks for the pleasure with me" output ` ` def ` ` end (): ` ` print ` ` (response [` ` 2 ` `]) ` ` input ` ` (` ` 'press enter key to exit' ` `) ` ` exit () `   ` def ` ` myname (): ` ` print ` ` (response [` ` 1 ` `]) ` ` def ` ` sorry (): ` ` print ` (response [ ` 3 ` `]) `   ` # Operations - based on text tokens ` ` operations ` ` = ` ` {` ` 'ADD' ` `: add, ` `' PLUS' ` `: add, ` ` 'SUM '` `: add, ` `' ADDITION' ` `: add, ` ` 'SUB' ` `: sub, ` ` 'SUBTRACT' ` `: sub, ` `' MINUS' ` `: sub, ` ` ` `' DIFFERENCE' ` `: sub, ` `' LCM' ` : lcm, ` 'HCF' ` `: hcf, ` ` 'PRODUCT' ` `: mul, ` ` 'MULTIPLY' ` `: mul, ` `' MULTIPLICATION' ` `: mul, ` ` 'DIVISION' ` `: div, ` ` 'MOD' ` `: mod, ` `' REMANDER' ` `: mod, ` ` 'MODULAS' ` `: mod} `   ` # commands ` ` commands ` ` = ` ` {` ` 'NAME' ` `: myname, ` `' EXIT' ` `: end, ` ` 'END' ` `: end , ` ` 'CLOSE' ` `: end} ` ` `  ` print ` ` (` ` '--- ----------- '` ` + ` ` response [` ` 0 ` `] ` ` + ` ` '--------- --- '` `) ` ` print ` ` ( ` ` '--------------' ` ` + ` ` response [` ` 1 ` `] ` ` + ` ` '--------------------' ` `) `   ` < / code> `` while True : print () text = input ( 'enter your queries: ' ) for word in text.split ( ' ' ): if word.upper () in operations.keys (): try : l = extract_from_text (text) r = operations [word.upper ()] (l [ 0 ], l [ 1 ]) print (r) except : print ( 'something went wrong going plz enter again !! ' )   finally : break   elif word.upper () in commands.keys ():   commands [word.upper ()] () break else :    sorry () `

Exit :

` -------------- Welcome to smart calculator ------------ - ------------ My name is MONTY -------------------- enter your queries: tell me the hcf of 4 and 8 4.0 enter your queries: hi plz tell me 7 + 8 Sorry, this is beyond my ability enter your queries: pls add 7 and 8 15.0 `