Numerical Computing with Python

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You might be wondering why we can't use the simpler sort_values Series method. This method does not sort independently and instead, preserves the row or column as a single record as one would expect while doing a data analysis. Step 3 is a very expensive operation and takes several seconds to complete. There are only about 60,000 rows so this solution would not scale well to larger data. Calling the

Step 3 is a very expensive operation and takes several seconds to complete. There are only about 60,000 rows so this solution would not scale well to larger data. Calling the apply method with axis=1 is one of the least performant operations in all of pandas. Internally, pandas loops over each row and does not provide any speed ...