Python | Pandas Series.last()
Pandas series is a One-dimensional ndarray with axis labels. The labels need not be unique but must be a hashable type. The object supports both integer- and label-based indexing and provides a host of methods for performing operations involving the index.
Pandas Series.last() function is a convenience method for subsetting final periods of time series data based on a date offset.
Syntax: Series.last(offset)
Parameter :
offset : string, DateOffset, dateutil.relativedeltaReturns : subset : same type as caller
Example #1: Use Series.last() function to return the entries for the last 5 Days in the given series object.
# importing pandas as pdimport pandas as pd # Creating the Seriessr = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio', 'Paris']) # Create the Indexindex_ = pd.date_range('2010-10-09', periods = 6, freq ='2D') # set the indexsr.index = index_ # Print the seriesprint(sr) |
Output :
Now we will use Series.last() function to return the entries for last 5 days in the given series object.
# return the entries of last 5 daysresult = sr.last('5D') # Print the resultprint(result) |
Output :
As we can see in the output, the Series.last() function has returned the entries for the last 5 days in the given series object. Notice the function has not returned the last 5 entries but the last 5 days entries.
Example #2 : Use Series.last() function to return the entries for the last 4 months in the given series object.
# importing pandas as pdimport pandas as pd # Creating the Seriessr = pd.Series([11, 21, 8, 18, 65, 84, 32, 10, 5, 24, 32]) # Create the Indexindex_ = pd.date_range('2010-10-09', periods = 11, freq ='M') # set the indexsr.index = index_ # Print the seriesprint(sr) |
Output :
Now we will use Series.last() function to return the entries for last 4 months in the given series object.
# return the entries of last 4 Monthsresult = sr.last('4M') # Print the resultprint(result) |
Output :
As we can see in the output, the Series.last() function has returned the entries for the last 4 months in the given series object.
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