I am using Python 3.3 the main code is shown in uploaded pic "Capture1". The part in the code that is apparently broken is the Postcode1 variable.

As shown in pic "Capture2", after I have converted the entire string to a list (each letter seperated), a c is shown at the front of the list, however, this only occurs sometimes (most of the time as sometimes this does not happen) as shown in "Capture3", when the code loops back round this never occurs. The rest of the pics (4 and onwards) displays the rest of the code, I have also attatched the code. Thanks

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