Identifying and solving null values is such an important task when you are working as a data analyst.
Also, when you use Python for data analysis for various tasks such as automation, cleaning, EDA, in-depth analysis, and more, you will be using pandas for data manipulation and analysis.
Today let's understand how you can check if a variable has null values using Python and pandas.
The answer is very simple by using the ".isna()" function.
𝗦𝗼, 𝘄𝗵𝗲𝗻𝗲𝘃𝗲𝗿 𝘆𝗼𝘂 𝘄𝗮𝗻𝘁 𝘁𝗼 𝗰𝗵𝗲𝗰𝗸 𝗶𝗳 𝗮 𝗰𝗼𝗹𝘂𝗺𝗻 𝗰𝗼𝗻𝘁𝗮𝗶𝗻𝘀 𝗻𝘂𝗹𝗹 𝘃𝗮𝗹𝘂𝗲𝘀 𝗶𝗻 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗷𝘂𝘀𝘁 𝗿𝘂𝗻 𝘁𝗵𝗲 𝗴𝗶𝘃𝗲𝗻 𝘀𝘁𝗮𝘁𝗲𝗺𝗲𝗻𝘁:
df['column_name'].isna()
This will return a series of boolean values, where True means a specific row has a null value in that column, and False means it does not.
So, this was a quick tutorial on how to check if a variable has null values or not in Python as a data analyst.
Enjoy and Follow for more!
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