newbie question(file-delete trailing comma)

[kavitha thankaian]

thanks,,
  now i have one more problem,,,
  the strings should be seperated in an order,,,
  some={1:'a', 2:7, 3:'c', 4:'d'}
  i need the output to be a,c,d,7
   
  before my code was:
          field_order = [1,3,4,2]
        for field in field_order:
            f.writelines('\"%s\",' % someprt[field] )
   
  do you have an idea now how should it look like???
   
   
  
        
Mikael Olofsson <mikael at isy.liu.se> wrote:
  kavitha thankaian wrote:
> my script writes a dictionary to a file.but i need only the values 
> from the dictionary which should be sepearted by a comma,,,so i did as 
> following:
> [snip code that generates the incorrect original file]
> when i execute the above code,my test.txt file has the following:
> a,b,c,d,
> now i need to delete the comma at the end,,,this is my problem,,,

This is the first time you mention that you have control over the 
generation of the original file. Then I suggest that you fix the problem 
before generating the file. For instance, consider the following 
interactive session.

>>> some={1:'a',2:7,3:'c',4:'d'}
>>> some
{1: 'a', 2: 7, 3: 'c', 4: 'd'}
>>> some.values()
['a', 7, 'c', 'd']
>>> [str(x) for x in some.values()]
['a', '7', 'c', 'd']
>>> ','.join([str(x) for x in some.values()])
'a,7,c,d'

Then write that to your file instead.

/MiO
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