Read python source file from encoding.

gistfile1.txt

import codecs
import re
opened_file = open(filename, "r")
encoding_line = opened_file.readline()
opened_file.close()
encoding_regex = re.compile('# -\*- coding:(.*) -\*-')
results = re.search(encoding_regex, encoding_line)
if results:
    encoding = results.groups()[0]
else:
    encoding = 'utf-8'
fp = codecs.open(filename, "r", encoding)
source = fp.readlines()
fp.close()