Need matching digits between two decimals

Question

let's say I have 2 decimals(float).

a = 123.62903
b = 123.6233

now I want the result to matching digits of this decimal. so result here should be

123.62.

If,

a =234.2387
b =232.2138

then, the result should be

result = 23.

It would be a great help thank you.

Answer 1

Using zip and a simple iteration.

Demo:

a = 123.62903
b = 123.62333

res = ''
for i, v in zip(str(a), str(b)):
    if i != v:
        break
    else:
       res += v

if res:
    print(float(res) if "." in res else int(res))

Output:

123.62