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Python | Pandas Index.repeat()

  • Last Updated : 18 Dec, 2018

Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier.

Pandas Index.repeat() function repeat elements of an Index. The function returns a new index where each element of the current index is repeated consecutively a given number of times.

Syntax: Index.repeat(repeats, *args, **kwargs)

Parameters :
repeats : The number of repetitions for each element.
**kwargs : Additional keywords have no effect but might be accepted for compatibility with numpy.

Returns : Newly created Index with repeated elements.



Example #1: Use Index.repeat()() function to repeat the elements of the index 2 times.




# importing pandas as pd
import pandas as pd
  
# Creating the index
idx = pd.Index(['Beagle', 'Pug', 'Labrador', 'Pug',
                        'Mastiff', None, 'Beagle'])
  
# Print the Index
idx

Output :

Let’s repeat the index elements 2 times.




# to repeat the values
idx.repeat(2)

Output :

As we can see in the output, the function has returned a new index with all the values repeated 2 times. One important thing to notice is that the function has also repeated the NaN value.

Example #2: Use Index.repeat() function to repeat the value of index 3 times.




# importing pandas as pd
import pandas as pd
  
# Creating the index
idx = pd.Index([22, 14, 8, 56, None, 21, None, 23])
  
# Print the Index
idx

Output :

Let’s repeat the index elements 3 times.




# to repeat the values
idx.repeat(3)

Output :

As we can see in the output, the function has returned a new index with all the values repeated 3 times. One important thing to notice is that the function has also repeated the NaN value.




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