请教一个时间转换的问题

情况如下：

['2019-01-31 00:00:00' , '2019-02-28 00:00:00' , '2019-03-31 00:00:00']

要如何将其转换为['Jan-2019' , 'Feb-2019' , 'March-2019']

s=pd.Series(['2019-01-31 00:00:00' , '2019-02-28 00:00:00' , '2019-03-31 00:00:00'])
s=s.astype('datetime64').dt.strftime(date_format='%b-%y')
print(s)

from datetime import datetime
a=['2019-01-31 00:00:00' , '2019-02-28 00:00:00' , '2019-03-31 00:00:00']
b=[datetime.strptime(x,'%Y-%m-%d %H:%M:%S') for x in a]
c=[x.strftime('%b-%Y') for x in b]