convert yyyy-mm-dd to mmm-yy in dataframe python

Question

I am trying to convert the way month and year is presented.

I have dataframe as below

Date
2020-01-31
2020-04-30
2021-05-05

and I want to convert it in the way like month and year. The output that I am expecting is

Date
Jan-20
Apr-20
May-21

I tried to do it with datetime but it doesn't work.

pd.to_datetime(pd.Series(df['Date'),format='%mmm-%yy')

Answer 1

Use .dt.strftime() to change the display format. %b-%y is the format string for Mmm-YY :

df.Date = pd.to_datetime(df.Date).dt.strftime('%b-%y')

#      Date
# 0  Jan-20
# 1  Apr-20
# 2  May-21

Or if Date is the index:

df.index = pd.to_datetime(df.index).dt.strftime('%b-%y')

Answer 2

import pandas as pd

date_sr = pd.to_datetime(pd.Series("2020-12-08"))
change_format = date_sr.dt.strftime('%b-%Y')
print(change_format)

Answer 3

reference https://docs.python.org/3/library/datetime.html %Y-%m-%d changed to ('%b-%y')

import datetime
df['Date'] = df['Date'].apply(lambda x: datetime.datetime.strptime(x,'%Y-%m-%d').strftime('%b-%y'))
# reference https://docs.python.org/3/library/datetime.html
# %Y-%m-%d changed to ('%b-%y')