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Python | Pandas Series.slice_shift()
  • Last Updated : 05 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.slice_shift() function is equivalent to shift without copying data. The shifted data will not include the dropped periods and the shifted axis will be smaller than the original.

Syntax: Series.slice_shift(periods=1, axis=0)

Parameter :
periods : Number of periods to move, can be positive or negative

Returns : shifted : same type as caller



Example #1: Use Series.slice_shift() function to shift the data of the given Series object by 2 periods.

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# importing pandas as pd
import pandas as pd
  
# Creating the Series
sr = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio', 'Moscow'])
  
# Create the Datetime Index
didx = pd.DatetimeIndex(start ='2014-08-01 10:00', freq ='W'
                     periods = 6, tz = 'Europe/Berlin'
  
# set the index
sr.index = didx
  
# Print the series
print(sr)

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Output :

Now we will use Series.slice_shift() function to shift the data in the given series object by 2 periods.

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# shift by 2 periods
sr.slice_shift(periods = 2)

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Output :

As we can see in the output, the Series.slice_shift() function has successfully shifted the data over the index. Notice the first two index labels are dropped.
 
Example #2: Use Series.slice_shift() function to shift the data of the given Series object by -2 periods.

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# importing pandas as pd
import pandas as pd
  
# Creating the Series
sr = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio', 'Moscow'])
  
# Create the Datetime Index
didx = pd.DatetimeIndex(start ='2014-08-01 10:00', freq ='W'
                     periods = 6, tz = 'Europe/Berlin'
  
# set the index
sr.index = didx
  
# Print the series
print(sr)

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Output :



Now we will use Series.slice_shift() function to shift the data in the given series object by -2 periods.

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# shift by -2 periods
sr.slice_shift(periods = -2)

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Output :

As we can see in the output, the Series.slice_shift() function has successfully shifted the data over the index. Notice the last two index labels are dropped and the data has been shifted upward.

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