This puzzle is meant to be solved with Python. Bah.
Someone has started. I’ll translate...
2 ** 38
the_garbled_string.tr('a-xy-z', 'c-za-b')
'map'.tr('a-xy-z', 'c-za-b')
File.open('ocr').read.split(//).find_all { |a| a =~ /[A-Za-z]/ }.join
File.open('regexp').read.scan(/[a-z][A-Z][A-Z][A-Z]([a-z])[A-Z][A-Z][A-Z][a-z]/).join