concatenating strings and numbers

hi

i want to create five fies with sequentially numbered nameseg

filebackup_1.tar.gz,
filebackup_2.tar.gz,
etc.

i thought i would be able to do it like this, but python won't allow strings and numbers to be concatenated:

count = 0
for path in paths:
++count
fileName = "filebackup_" + count + ".tar.gz"

i have tried using the following line but can't get that to work either (i can't get the syntax right if it is the right way to do it):

count = string.atoi(count), `count`

please help

i just found the way to turn the number into a string from another thread (should have looked harder first).

however, the count variable isn't increasing with iteration of the loop

python is an "easy" transition from C but that does not mean it uses all the same syntax or methods

should sort you out
Grim

thanks for that.

it didn't bring up any errors so i didn't realise it was incorrect

Probably the most comon way to do this kind of thing (besides type casting isng str()) is to use string formatting. Which is my persional favourate (depending on the situation) because it gives you a lot of controle and often takes up less space!



For more info on string formatting you should read this:

http://www.python.org/doc/2.3.3/lib...eq-strings.html

so you're code might end up looking something like this...



If you dont care about spaces creeping into you're strings (which you do here), you can use ',' to concate strings, number etc, i.e.



You get the point i'm sure , this does pretty much the same thing as 'string' + `number` + 'string' format when used with print . Just thought i'd mention it!

Mark.

You shouldn't use `number`, generally. It's not the same as creating a string from the variable value, it's the same as repr()'ing it. String formatting is the most efficient way of doing it (as opposed to using + to concatenate).