Good Style - bad Style

Question

One Question was to add '3' on the first and the plast position of an integer. My solution is:

a = 253
b = len(str(a))
c = 10**(b+1)
print (c*3+a*10+3)

The same code is possible as an oneliner:

print ((3*10**((int(len(str(253)))+1)))+253*10+3)

But who can read and understand this? What do you think is the better way to write this code down?

Answer 1

Oneliners are mostly difficult to understand. In my view, the only advantage of it is when you need to impress someone ;)

Answer 2

(i use oneliners on eval/exec)

Answer 3

@Sebastian: I don't think so. The decrease/increase in performance depends on the no. of calculations or operations you do in your code. That's what I recall...

Answer 4

ofcourse the first one is way better than the second !

Answer 5

Thanks. By the way: has the number of lines an effect on the performance of the Code?