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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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Cloud Storage the real Points You Need to Read Now

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There are hundreds of different cloud storage systems, and some are very specific in what they do.

Some are niche-oriented and store just email or digital pictures, while others store any type of data. Some providers are small, while others are huge and fill an entire warehouse.
Google Data Center

In this post, you will know about:
  1. Storage in Cloud
  2. The inside details of Cloud
  3. New things in Cloud Storage

Storage of CLOUD

One of Google’s data centers in Oregon is the size of a football field and houses thousands of servers. 

The inside details of  Cloud Storage

  • At the most rudimentary level, a cloud storage system just needs one data server connected to the Internet. 
  • A subscriber copies files to the server over the Internet, which then records the data. 
  • When a client wants to retrieve the data, he or she accesses the data server with a web-based interface, and the server then either sends the files back to the client or allows the client to access and manipulate the data itself.
Cloud computing market
Market of cloud computing

What is new in Cloud Storage

The cloud storage systems utilize dozens or hundreds of data servers. Because servers require maintenance or repair, it is necessary to store the saved data on multiple machines, providing redundancy.

Without that redundancy, cloud storage systems couldn’t assure clients that they could access their information at any given time.

Most systems store the same data on servers using different power supplies. That way, clients can still access their data even if a power supply fails.

Many clients use cloud storage not because they’ve run out of room locally, but for safety. If something happens to their building, then they haven’t lost all their data. 

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