newbie question: how to read back the dictionary from a file?

[lancered]

Hi Dear all,

I have some data here in the form of a dictionary, called "vdic". Then
I write them to a data file "f" using   the write function as
f.write(str(vdic)).  The keys of this dictionary are integers and
values are float numbers. Something like this:

{ 1: 0.00951486513347, 2: 0.0388123556019, ... ...}

Now, I want to read these data back in another function.  Of course, I
could parse the string little by little, e.g, first read a "{", then
loop read a int, then read a ":", then a float etc etc... Since it is
written out with standard python builtin functions,  I guess there may
be some more direct method than this, say a function in some modules?
Could someone give me a hint?