Unwanted Spaces and Iterative Loop

[matt.s.marotta at gmail.com]

I have been working on a python script that separates mailing addresses into different components.

Here is my code: 

inFile = "directory"
outFile = "directory"
inHandler = open(inFile, 'r')
outHandler = open(outFile, 'w')
outHandler.write("FarmID\tAddress\tStreetNum\tStreetName\tSufType\tDir\tCity\tProvince\tPostalCode")
for line in inHandler:
    str = line.replace("FarmID\tAddress", " ")
    outHandler.write(str[0:-1])

    str = str.replace(" ","\t", 1)
    str = str.replace(" Rd,","\tRd\t\t")
    str = str.replace(" Rd","\tRd\t")
    str = str.replace("Ave,","\tAve\t\t")
    str = str.replace("Ave ","\tAve\t\t")
    str = str.replace("St ","\tSt\t\t")
    str = str.replace("St,","\tSt\t\t")    
    str = str.replace("Dr,","\tDr\t\t")
    str = str.replace("Lane,","\tLane\t\t")
    str = str.replace("Pky,","\tPky\t\t")
    str = str.replace(" Sq,","\tSq\t\t")
    str = str.replace(" Pl,","\tPl\t\t")

    str = str.replace("\tE,","E\t")
    str = str.replace("\tN,","N\t")
    str = str.replace("\tS,","S\t")
    str = str.replace("\tW,","W\t")    
    str = str.replace(",","\t")
    str = str.replace(" ON","ON\t")


    outHandler.write(str)
inHandler.close()

The text file that this manipulates has 91 addresses, so I'll just paste 5 of them in here to get the idea:

FarmID	Address
1	1067 Niagara Stone Rd, Niagara-On-The-Lake, ON L0S 1J0
2	4260 Mountainview Rd, Lincoln, ON L0R 1B2
3	25 Hunter Rd, Grimsby, ON L3M 4A3
4	1091 Hutchinson Rd, Haldimand, ON N0A 1K0

My issue is that in the output file, there is a space before each city and each postal code that I do not want there.  

Furthermore, the FarmID is being added on to the end of the postal code under the original address column for each address.  This also is not supposed to be happening, and I am having trouble designing an iterative loop to remove/prevent that from happening.

Any help is greatly appreciated!