Binary to Decimal and Decimal to Binary Convertor in PYTHON

Binary to Decimal Convertor
Decimal to Binary Convertor in PYTHON

import math
while True:
    decision = input("\n \nPress 1 for decimal to binary conversion\nPress 2 for binary to decimal conversion\n")

if(decision=="1"):
        print("Instructions")
        print("1.) Only positive numbers")
        print("2.) Number should not be in fraction")
        print("3.) It should not contains alphabets or other special characters")

n = input("Enter the number: ")
        n = int(n)
        mylist = []
        if n <0:
            print("Please give numbers greator than 0")
        while True:
            m = n%2
            if m == 1:
                
                quo = (n-1)/2
                j = (n)%2
                mylist.append(j)
                temp = n
                n = quo
                if quo == 1:
                    mylist.append(1)
                    break
            elif m == 0:

quo = n/2
                j = n%2
                mylist.append(j)
                temp = n
                n = quo
                if quo == 1:
                    mylist.append(1)
                    break
            
        mylist.reverse()
        print("Your binary number is: ")
        for i in range(0, len(mylist)):
            mylist[i] = math.trunc(mylist[i])
            print(mylist[i], end="")

elif(decision=="2"):
        print("Instructions")
        print("1.) Binary should conatins only 0 and 1")
        print("2.) Should not be in fraction")
        print("3.) Should not be negative")
        s = input("Enter the binary number: ")
        s = int(s)
        a = 0
        mylist3 = [int(x) for x in str(s)]
        mylist3.reverse()
        mylist2 = []
        for i in range(0, len(mylist3)):
            powi = pow(2, i)
            mylist2.append(powi)
            a = a + (mylist3[i]*mylist2[i])
        print("Your decimal number is: ")
        print(a)

else:
        print("Please choose among 1 and 2.")

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