Reverse number
Reverses a number.
- Use
str()
to convert the number to a string, slice notation to reverse it andstr.replace()
to remove the sign. - Use
float()
to convert the result to a number andmath.copysign()
to copy the original sign.
from math import copysign def reverse_number(n): return copysign(float(str(n)[::-1].replace('-', '')), n) reverse_number(981) # 189 reverse_number(-500) # -5 reverse_number(73.6) # 6.37 reverse_number(-5.23) # -32.5