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How to Check Column Nulls and Replace: Pandas

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Here is a post that shows how to count Nulls and replace them with the value you want in the Pandas Dataframe. We have explained the process in two steps - Counting and Replacing the Null values. Count null values (column-wise) in Pandas ## count null values column-wise null_counts = df.isnull(). sum() print(null_counts) ``` Output: ``` Column1    1 Column2    1 Column3    5 dtype: int64 ``` In the above code, we first create a sample Pandas DataFrame `df` with some null values. Then, we use the `isnull()` function to create a DataFrame of the same shape as `df`, where each element is a boolean value indicating whether that element is null or not. Finally, we use the `sum()` function to count the number of null values in each column of the resulting DataFrame. The output shows the count of null values column-wise. to count null values column-wise: ``` df.isnull().sum() ``` ##Code snippet to count null values row-wise: ``` df.isnull().sum(axis=1) ``` In the above code, `df` is the Panda
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Top Skills You need for Automation Career

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Automation Developer Skill Set
According to KPMG -Process automation provides a means to integrate people in a software development organization with the development process and the tools supporting that development. Successful career you need these Skills.

What you will achieve by Automation

By automating processes, you can boost your efficiency and help ensure standardized handling of repetitive workflow steps. Organiz ation’s benefits are translation projects that can be realized in a shorter time for less money.

Skill set you need:


  • Programming Languages (C++/Java/Scala),
  • OOPs Concepts - MUST
  • Unix/Linux - MUST

  • Automation Development/Scripting Experience - MUST
  • XML/Xpath - Optional
  • Perl/Python/Shell Scripting - Optional
  • SQL/Sybase/Mongo DB - Optional
  • Web Services - SOAP or REST API - Optional

Additional Skills:

  1. Puppet/Chef/CFEngine experience 
  2. Experience with system packaging tools; e.g. RPM 
  3. SQL database programming experience 

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