string concatenate

[s-sriram]

Hi
I am trying my first try at Python. I want to do something very similar to what sprintf does with C. I want to concatenate a string with a number and store it into a new string.

I wrote a snippet like this

username='user'
for i in range (1-100)
user=user_name+str(i)
print user
else: print 'The loop is done'

But this one fails to do the same. Can somene help me decipher where exactly I am going wrong.

Thanks for your help

regards
Ram

[Narue]

user_name = 'user'
for i in range ( 1, 100 ):
  user = user_name + str ( i )
  print user
else:
  print 'The loop is done'

[vegaseat]

If you want to do something even closer to sprintf(), you can use the formatting statement. As Narue pointed out, in Python you must use indentations to group your statements.

user_name = 'user'
for i in range ( 1, 100 ):
    #user = user_name + str ( i )
    user = "%s%d" % (user_name, i)
    print user
else:
    print 'The loop is done'

Note that the formatting code %s or %d etc. is the same as used in C for printf() or sprintf(). So if you use "%s%02d", you zero pad the numbers 1 to 9 and get strings like 'user01' and so on.

[s-sriram]

If you want to do something even closer to sprintf(), you can use the formatting statement. As Narue pointed out, in Python you must use indentations to group your statements.

user_name = 'user'
for i in range ( 1, 100 ):
    #user = user_name + str ( i )
    user = "%s%d" % (user_name, i)
    print user
else:
    print 'The loop is done'

Note that the formatting code %s or %d etc. is the same as used in C for printf() or sprintf(). So if you use "%s%02d", you zero pad the numbers 1 to 9 and get strings like 'user01' and so on.

Thanks a lot. That helps. And that is quite close what I expected.