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pandas.lreshape() function in Python

20 June 2025

This method is used to reshape long-format data to wide. This is the generalized inverse of DataFrame.pivot.

Syntax : pandas.lreshape(data, groups, dropna=True, label=None)

Arguments :

data : DataFrame

groups : dict {new_name : list_of_columns}

dropna : boolean, default True

Below is the implementation of the above method with an example :

Python3

# importing package
import numpy
import pandas as pd
 
# create and view data
data = pd.DataFrame({
    'hr1': [514, 573],
    'hr2': [545, 526],
    'team': ['Red Sox', 'Yankees'],
    'year1': [2007, 2007],
    'year2': [2008, 2008]
})
print(data)
 
# use pandas.lreshape() method
print(pd.lreshape(data, {'year': ['year1', 'year2'],
                         'hr': ['hr1', 'hr2']}))
# This code is contributed by rakeshsahni