Matching strings with a dictionary built from a flat file

[moconno5]

Hello again,

I am still working on my same project and have run into another little problem. I have created a flat file with data from a server, each line looks like this:

BLAT Search Results
ACTIONS QUERY SCORE START END QSIZE IDENTITY CHRO STRAND START END SPAN
---------------------------------------------------------------------------------------------------
browser details Musmusculuslet-7g 21 1 21 21 100.0% 22 + 46884872 46884892 21
browser details Musmusculuslet-7i 21 1 21 21 100.0% 5 + 50605174 50605194 21

My original input looked like this:

>Musmusculuslet-7g
UGAGGUAGUAGUUUGUACAGU
>Musmusculuslet-7i
UGAGGUAGUAGUUUGUGCUGU

As you can see, the original RNA codes were deleted in the reply. Also, my replies are sorted differently and have multiple matches in some cases, so I want to create a library that has all of my matches, and then feed in the above file and add the RNA codes whenever it finds the matching Musmusculus statements. I have the following code, but it just matches an exact string:

DictionaryMaker ( filename ):
    dict = {}
    for i in dict.keys(practice):
    if  i == string:
        print 'Yes there is a match!'
        string = string + ' ' + practice[i]
 
 
 

I also need to read in the data I have for the dictionary somehow to build my dictionary from my flat file. The key should be '>Musmusculuslet-7g' and the value 'UGAGGUAGUAGUUUGUACAGU' from above. Is there an easy way to read this in from a file containing all of these sequences?

Any help would be appreciated!

Mark