Question

I’m new to python, I’m using v2.7

#Filename:ReverseNumber.py
data=int(raw_input("Enter any number: "))
print "Reverse of the number: ",
while data!=0:
    a=data%10
    print a,
    data=data/10

So the output should come like :

Enter any number: 123
Reverse of the number: 321

but instead of this in the second line it is printing one extra space before every number.

How to overcome this?

Answer 1

You could modify your approach in a number of ways:

Create a list of your values, then join them with a blank string for printing:

out = []
while data != 0:
  out.append(data % 10)
  data /= 10
print ''.join(map(str, out))

You could skip the whole integer conversion step and just reverse the incoming string:

data = '123'
print data[-1::-1]

You could skip the integer step and join the result of reversed:

data = '123'
print ''.join(reversed(data))

You could add a backspace to your print commands for your numbers:

while data != 0:
  print '\b%d' % (data % 10)
  data /= 10

Hopefully one of those fits your requirements.