Pandas: Insert a given column at a specific column index in a DataFrame

Last update on May 01 2025 12:54:31 (UTC/GMT +8 hours)

53. Insert Column at Specific Index

Write a Pandas program to insert a given column at a specific column index in a DataFrame.

Sample Solution :

Python Code :

import pandas as pd
d = {'col2': [4, 5, 6, 9, 5], 'col3': [7, 8, 12, 1, 11]}
df = pd.DataFrame(data=d)
print("Original DataFrame")
print(df)
new_col = [1, 2, 3, 4, 7]  
# insert the said column at the beginning in the DataFrame
idx = 0
df.insert(loc=idx, column='col1', value=new_col)
print("\nNew DataFrame")
print(df)

Sample Output:

Original DataFrame
   col2  col3
0     4     7
1     5     8
2     6    12
3     9     1
4     5    11

New DataFrame
   col1  col2  col3
0     1     4     7
1     2     5     8
2     3     6    12
3     4     9     1
4     7     5    11

For more Practice: Solve these Related Problems:

Write a Pandas program to insert a new column at the second position of a DataFrame and populate it with computed values.
Write a Pandas program to insert a column at a specified index, then shift the remaining columns to the right without altering the DataFrame shape.
Write a Pandas program to insert a column with constant values at a specific location and then verify the column order.
Write a Pandas program to add a column between two given columns and then sort the DataFrame based on the new column's values.

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Python-Pandas Code Editor:

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