In this article, we will discuss how to add a row to a pandas DataFrame in Python. We will discuss:

• How to add a row at the bottom of a pandas DataFrame?
• How to add a row at the top of a pandas DataFrame?
• How to insert a row at a specific index of a pandas DataFrame?

How to add a row at the bottom of a pandas DataFrame using Python?

In the pandas Python library, we can add a row in a DataFrame using loc[]. For example,

import pandas

list1 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
df = pandas.DataFrame(list1)
print("df before adding row: \n", df)

df.loc[3] = [10, 11, 12]
print("df after adding row: \n", df)

The output of the above program will be:

df before adding row: 
   0  1  2
0  1  2  3
1  4  5  6
2  7  8  9
df after adding row: 
    0   1   2
0   1   2   3
1   4   5   6
2   7   8   9
3  10  11  12

Here, we are first creating a DataFrame from the list list1. The DataFrame, at this point, has three rows and three columns. We …