Series.dt can be used to access the values of the series as datetimelike and return several properties. Pandas Series.dt.is_year_start attribute return a boolean value Indicating whether the date is the first day of a year.
Syntax: Series.dt.is_year_start
Parameter : None
Returns : numpy array
Example #1: Use Series.dt.is_year_start attribute to check if the dates in the underlying data of the given series object is the first day of a year.
# importing pandas as pd import pandas as pd # Creating the Series sr = pd.Series(['2012-3-31', '2019-1-1 12:30', '2008-02-2 10:30', '2010-1-1 09:25', '2019-12-31 00:00']) # Creating the index idx = ['Day 1', 'Day 2', 'Day 3', 'Day 4', 'Day 5'] # set the index sr.index = idx # Convert the underlying data to datetime sr = pd.to_datetime(sr) # Print the series print(sr) |
Output :
Now we will use Series.dt.is_year_start attribute to check if the dates in the given series object is the first day of a year or not.
# check if dates are the # first day of a year result = sr.dt.is_year_start # print the result print(result) |
Output :
As we can see in the output, the Series.dt.is_year_start attribute has successfully accessed and returned boolean values indicating whether the dates are the first day of a year or not.
Example #2 : Use Series.dt.is_year_start attribute to check if the dates in the underlying data of the given series object is the first day of a year.
# importing pandas as pd import pandas as pd # Creating the Series sr = pd.Series(pd.date_range('2012-1-1 00:00', periods = 5, freq = 'D')) # Creating the index idx = ['Day 1', 'Day 2', 'Day 3', 'Day 4', 'Day 5'] # set the index sr.index = idx # Print the series print(sr) |
Output :
Now we will use Series.dt.is_year_start attribute to check if the dates in the given series object is the first day of a year or not.
# check if dates are the # first day of a year result = sr.dt.is_year_start # print the result print(result) |
Output :
As we can see in the output, the Series.dt.is_year_start attribute has successfully accessed and returned boolean values indicating whether the dates are the first day of a year or not.
