typecasting: a string object to a dictionary object

[dont bother]

Hi,
Thanks! Just one more favour.
I want to sort the entries on this new dictionary.
(Increasing order) and convert it back to a string
where each values are not separated by , but by space.

ie. for example: I have a string s of the form
index: value, index: value, index: value

I converted it to a dictionary by the method you
suggested. I want to sort the entries now, with
increasing order of index.

Once I have the sorted dictionary, I want to convert
it back to a string of the form

1 index:value index:value index:value


Note, that 1 is added because I am creating feature
vectors of the type "spam". index: value pairs are now
separated by space instead of comma and finally I want
to write this to a file.

The whole notion of making a string to a dictionary
was because of sorting.

Can you extend this piece of code for the above
objective. I will indeed be very grateful to you.


import string

# define a test string
s1 = "<name1: value1, name2: value2, name3: value3>"
# get rid of the < and > by taking a slice
s1 = s1[1:-1]
# split string at the commas
s2 = string.split(s1,',')
mydict = {}
for item in s2:
        a,b = string.split(item,":")
        mydict[a] = b
        print mydict[a]
print "Dictionary is: ", mydict









Thanks
Dont


--- midtoad <stewart at midtoad.homelinux.org> wrote:
> dont bother wrote:
> 
> > I have a string:
> > 
> > feature_vector. It is of the form
> > <index: value, index: value, index: value>
> > 
> > I want to make this string into a dictionary so
> that I
> > can apply .keys() method
> 
> okay, here's a solution, assuming that your < and >
> are part of the string.
> If not, remove the line where you take a slice.  
> I'm sure that there are
> more Pythonic solutions, but this works...
> 
> ---
> import string
> 
> # define a test string
> s1 = "<name1: value1, name2: value2, name3: value3>"
> # get rid of the < and > by taking a slice
> s1 = s1[1:-1]
> # split string at the commas
> s2 = string.split(s1,',')
> mydict = {}
> for item in s2:
>         a,b = string.split(item,":")
>         mydict[a] = b
>         print mydict[a]
> print "Dictionary is: ", mydict
> ---
> 
> cheers
> Stewart
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list


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