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.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.

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# 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)

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Output :

Now we will use Series.last() function to return the entries for last 5 days in the given series object.

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# return the entries of last 5 days
result = sr.last('5D')
  
# Print the result
print(result)

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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.

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# 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)

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Output :

Now we will use Series.last() function to return the entries for last 4 months in the given series object.

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# return the entries of last 4 Months
result = sr.last('4M')
  
# Print the result
print(result)

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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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