Skip to content
Related Articles

Related Articles

Improve Article

Python | Pandas Series.last()

  • Last Updated : 11 Feb, 2019

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.relativedelta

Returns : 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 pd
import pandas as pd
  
# Creating the Series
sr = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio', 'Paris'])
  
# Create the Index
index_ = pd.date_range('2010-10-09', periods = 6, freq ='2D')
  
# set the index
sr.index = index_
  
# Print the series
print(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 days
result = sr.last('5D')
  
# Print the result
print(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 pd
import pandas as pd
  
# Creating the Series
sr = pd.Series([11, 21, 8, 18, 65, 84, 32, 10, 5, 24, 32])
  
# Create the Index
index_ = pd.date_range('2010-10-09', periods = 11, freq ='M')
  
# set the index
sr.index = index_
  
# Print the series
print(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 Months
result = sr.last('4M')
  
# Print the result
print(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.

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :