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Title: Flatten Lists Of Lists
Slug: flatten_list_of_lists
Summary: Flatten Lists Of Lists
Date: 2016-05-01 12:00
Category: Python
Tags: Data Wrangling
Authors: Chris Albon



In [7]:

    
# Create a list containing three lists of names
list_of_lists = [['Amy','Betty','Cathryn','Dana'], 
                 ['Elizabeth','Fay','Gora'], 
                  ['Heidi','Jane','Kayley']]



In [8]:

    
# For each element in list_of_lists, take each element in the list
flattened_list = [i for row in list_of_lists for i in row]



In [9]:

    
# View the flattened list
flattened_list









    Out[9]:





['Amy',
 'Betty',
 'Cathryn',
 'Dana',
 'Elizabeth',
 'Fay',
 'Gora',
 'Heidi',
 'Jane',
 'Kayley']