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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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10 Hot IT Skills great demand Beyond 2020

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The below are the highest demanding and high-paying IT jobs in 2016

Wireless Network Engineers can expect a 9.7 percent increase in pay, ranging from $108,750-$150,750, which is the highest increase in starting salary of all IT jobs in our guide! What’s going on here? The general push toward wireless offices and the growth of mobile application development, which requires testing mobile apps in a wireless environment, are just a few reasons for the increased starting pay. 

CRM Business Analyst-2015 salary: $84,500-$116,750 -2016 salary (est): $87,500-$126,000 - Percent increase (est): 6.1% 

Data Modeler - 2015 salary: $101,750-$145,250 - 2016 salary (est): $106,750-$155,500 - Percent increase (est): 6.2% 

Business Intelligence Analyst -2015 Salary: $108,500-$153,000 -2016 Salary (est): $113,750-$164,000 -Percent increase (avg): 6.2% 

Data Scientists and Big Data Engineers are both projected to see an 8.9 percent increase in starting pay over 2015, ranging from $109,000-$153,750 and $129,500-$183,500, respectively. Why the increase? More companies are using big data analytics to help inform business decisions and are relying on specialized personnel for managing and interpreting raw data. 

Mobile Application Developers are projected to see an 8.2% increase in starting pay, from $115,250-$175,750. Mobile app developers are in high demand due to growth in the use of mobile devices such as smartphones and tablets. 

Applications Architect -2015 salary: $115,750-$159,500 -2016 salary (est): $121,250-$171,750 -Percent increase (avg): 6.4% 

Data Architect -2015 salary: $119,750-$164,750 -2016 salary (est): $127,250-$175,500 -Percent increase (avg): 6.4% 

Web Developer -2015 salary: $73,500-$122,000 -2016 salary (est): $78,500-$129,500 -Percent increase (avg): 6.4%

Ref: Information week and Rh

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