Python help with module function return dictionary

[tebirkes]

I dont know what is wrong with my script, it only returns the last line from a file with some E coli data. 
It should return a dictionary where the keys are the names of the proteins and sequences are the values. 

def read_fasta(str):
    file =  open(str).read()
    holder = []
    table_dict = {}
    for line in file.split('>'):
        #table_dict[line.split()[0]] = line.splitlines()[1:]
        table_dict["Name"] = (line.splitlines()[:1])
        table_dict["Value"] = (line.splitlines()[1:])
    print table_dict

In another Python file I import this function and test whether it works or not

import module

module.read_fasta("Ecoli.prot.fasta")