python pandas extract unique dates from time series

Question

I have a DataFrame which contains a lot of intraday data, the DataFrame has several days of data, dates are not continuous.

 2012-10-08 07:12:22            0.0          


        

Answer 1

Using regex:

(\d{4}-\d{2}-\d{2})

Run it with re.findall function to get all matches:

result = re.findall(r"(\d{4}-\d{2}-\d{2})", subject)