ConfigParser : overwrite ?

[Robert Kern]

cantabile wrote:
> Hi, I'm trying and updating an .ini file with ConfigParser but each time
> I call 'write', it appends the whole options another time to the file.
> For example :
> Here's the inital ini file
> 
> [section1]
> foodir: %(dir)s/whatever
> dir: foo
> 
> Here's my code :
> filename = ...
> config = ConfigParser.ConfigParser()
> config.read(filename)
> config.set('section1', 'dir', 'anotherdir')
> f = open(filename, 'r+')
> config.write(f)
> f.close()
> 
> Then I get :
> 
> [section1]
> foodir: %(dir)s/whatever
> dir: anotherdir
> 
> [section1]
> foodir: %(dir)s/whatever
> dir: foo
> 
> I tried also with 'w', 'w+', 'a' ...

Are you sure you tried it with 'w' as the mode?

In [1]: !cat foo.ini
[section1]
foodir: %(dir)s/whatever
dir: foo
In [2]: fn = 'foo.ini'

In [3]: import ConfigParser

In [4]: cfg = ConfigParser.ConfigParser()

In [5]: cfg.read(fn)
Out[5]: ['foo.ini']

In [6]: cfg.set('section1', 'dir', 'anotherdir')

In [7]: f = open(fn, 'w')

In [8]: cfg.write(f)

In [9]: f.close()

In [10]: !cat foo.ini
[section1]
foodir = %(dir)s/whatever
dir = anotherdir

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter