Python 2.x
>>> s
'This is some \u03c0 text that has to be cleaned\u2026! it\u0027s annoying!'
>>> print(s.decode('unicode_escape').encode('ascii','ignore'))
This is some text that has to be cleaned! it's annoying!
Python 3.x
>>> s = 'This is some u03c0 text that has to be cleanedu2026! itu0027s annoying!'
>>> s.encode('ascii', 'ignore')
b"This is some text that has to be cleaned! it's annoying!"
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…