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Pandas: Convert index of a given dataframe into a column

Pandas Indexing: Exercise-9 with Solution

Write a Pandas program to convert index of a given dataframe into a column.

Test Data:

0        s001     V  Alberto Franco     15/05/2002      35  street1   t1
1        s002     V    Gino Mcneill     17/05/2002      32  street2   t2
2        s003    VI     Ryan Parkes     16/02/1999      33  street3   t3
3        s001    VI    Eesha Hinton     25/09/1998      30  street1   t4
4        s002     V    Gino Mcneill     11/05/2002      31  street2   t5
5        s004    VI    David Parkes     15/09/1997      32  street4   t6

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'school_code': ['s001','s002','s003','s001','s002','s004'],
    'class': ['V', 'V', 'VI', 'VI', 'V', 'VI'],
    'name': ['Alberto Franco','Gino Mcneill','Ryan Parkes', 'Eesha Hinton', 'Gino Mcneill', 'David Parkes'],
    'date_of_birth': ['15/05/2002','17/05/2002','16/02/1999','25/09/1998','11/05/2002','15/09/1997'],
    'weight': [35, 32, 33, 30, 31, 32]},
     index = ['t1', 't2', 't3', 't4', 't5', 't6'])
print("Original DataFrame:")
print(df)
print("\nConvert index of the said dataframe into a column:")
df.reset_index(level=0, inplace=True)
print(df)

Sample Output:

Original DataFrame:
   school_code class            name date_of_birth  weight
t1        s001     V  Alberto Franco    15/05/2002      35
t2        s002     V    Gino Mcneill    17/05/2002      32
t3        s003    VI     Ryan Parkes    16/02/1999      33
t4        s001    VI    Eesha Hinton    25/09/1998      30
t5        s002     V    Gino Mcneill    11/05/2002      31
t6        s004    VI    David Parkes    15/09/1997      32

Convert index of the said dataframe into a column:
  index school_code class            name date_of_birth  weight
0    t1        s001     V  Alberto Franco    15/05/2002      35
1    t2        s002     V    Gino Mcneill    17/05/2002      32
2    t3        s003    VI     Ryan Parkes    16/02/1999      33
3    t4        s001    VI    Eesha Hinton    25/09/1998      30
4    t5        s002     V    Gino Mcneill    11/05/2002      31
5    t6        s004    VI    David Parkes    15/09/1997      32  

Python Code Editor:


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Next: Write a Pandas program to convert 1st and 3rd levels in the index into columns from a multiple level of index frame of a given dataframe.

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test_obj = [1, 3, 5, 7]
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Output:

['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', 
'__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__',
'__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__',
'__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__',
'__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort']