Remove dtype datetime NaT

Question

I am preparing a pandas df for output, and would like to remove the NaN and NaT in the table, and leave those table locations blank. An example would be

myd         


        

Answer 1

I had the same issue: This does it all in place using pandas apply function. Should be the fastest method.

import pandas as pd
df['timestamp'] = df['timestamp'].apply(lambda x: x.strftime('%Y-%m-%d')if not pd.isnull(x) else '')

if your timestamp field is not yet in datetime format then:

import pandas as pd
df['timestamp'] = pd.to_datetime(df['timestamp']).apply(lambda x: x.strftime('%Y-%m-%d')if not pd.isnull(x) else '')