As shown below:
df = df[df['cityname']==u'Beijing Municipality']
Remember, if you're using python2, be sure to import the
import sys reload(sys) ('utf-8')
Or add u' in front of Chinese to indicate unicode encoding, because the Chinese characters in the pandas object are of unicode type.
Above this pandas filtering a column of coding errors in the solution is all that I have shared with you, I hope to give you a reference, and I hope that you will support me more.