On Fri, 13 Aug 2010 13:50:48 -0700, Vamsi wrote:
> I am trying to count the number of lines in a file and insert into the
> file but getting the error message "TypeError: must be string or
> read-only character buffer, not int", Could you please help me how to
> correct this?
>
>
> here is the code
>
> lines1 = sum(1 for line in open('C:/test1.txt'))
> wfile = open('C:/test1.txt'', 'a')
> wfile.write(str(lines1).zfill(9))
> wfile.close()
No, that ISN'T the code you are using.
Don't re-type the code (introducing syntax errors), but copy and paste
WORKING code. Also you need to copy and paste the EXACT error message you
get, not just paraphrasing it.
When I correct the obvious errors in your code above, it works for me:
>>> f = open('test', 'w')
>>> f.write('hello\nworld\n')
12
>>> f.close()
>>> lines1 = sum(1 for line in open('test'))
>>> wfile = open('test', 'a')
>>> wfile.write(str(lines1).zfill(9))
9
>>> wfile.close()
and the file is correctly updated:
>>> open('test').read()
'hello\nworld\n000000002'
--
Steven
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