Unicode (utf8) reading and writing to files in python http://stackoverflow.com/questions/491921/unicode-utf8-reading-and-writing-to-files-in-python
Write to UTF-8 file in Python http://stackoverflow.com/questions/934160/write-to-utf-8-file-in-python
Delete every non utf-8 symbols froms string http://stackoverflow.com/questions/26541968/delete-every-non-utf-8-symbols-froms-string
Encoding and Decoding of text in Python http://stackoverflow.com/questions/11661822/encoding-and-decoding-of-text-in-python