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How to Add a New Column with a Constant Value to a DataFrame?

1 min read
pandas and pyspark dataframe new column with constant value

DataFrame is a two-dimensional data structure with labeled rows and columns. We can always add new columns or rows to a DataFrame.

In this short how-to article, we will learn how to add a new column of a constant value to Pandas and PySpark DataFrames.

add-new-column-with-constant-value-to-dataframe

Pandas

It is a quite simple operation in Pandas.

df["Bonus"] = 100

PySpark

We can perform this task using the withColumn and lit functions as below:

from pyspark.sql import functions as F

df = df.withColumn("Bonus", F.lit(100))

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