How to Add an Empty Column to a DataFrame?

pandas and pyspark dataframe add new empty column

In this short how-to article, we will learn how to add an empty column to Pandas and PySpark DataFrames.

add-empty-column-to-dataframe

Pandas

We can create an empty column by assigning an empty string as follows:

				
					df["f4"] = ""
				
			

PySpark

The logic is the same as Pandas but the implementation is a bit different. We can assign an empty string to a new column as follows:

				
					from pyspark.sql import functions as F
df = df.withColumn("f4", F.lit(""))
				
			

This question is also being asked as:

  • Add multiple empty columns to Pandas DataFrame

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