Turning category labels into indicator columns gives a pandas table one column for each category. pandas.get_dummies() creates those columns, using Boolean values by default or integers when you set dtype=int. I’ll show how to encode selected columns and align training…
Splitting a set of numbers, such as test scores, into groups like quartiles lets you compare values by where they rank. pandas qcut does this by rank, putting a similar number of values in each group. This guide shows how…
The final np.gradient estimate can be negative even when the sample values rise, if the coordinates step backward from 9.0 to 0.1. That negative result makes the role of coordinate order clear to me. Pair each slope with the coordinate…
At the second position, np.maximum returns 9 from the pair 8 and 9. That position-by-position result catches my attention: each comparison stays tied to its matching pair instead of reducing the whole array to one maximum. For your two arrays,…
I ran into an issue last week where a financial report I was generating had numbers like 1234567.89 printed without any spacing. My manager squinted at the screen for ten seconds before asking if that was a million or a…
Python is not only about carrying out complex computations, it also has a bag full of tricks when it comes to getting things done through the web. With Python, you can easily extract specific information from any publicly accessible domain.…
Einsum is an almighty function from the numpy library which is the most efficient manipulator of n-dimensional arrays. It can perform umpteen functions such as adding, multiplying or rearranging the input arrays in a jiffy, resulting in multiple x’s faster…
Nothing is more frustrating than encountering a syntax error when you think your code is perfect. In this article, we’re going to dissect the ‘elif’ function in Python, unraveling common syntax errors and their solutions. In this article we shall…
A bit is the fundamental block for building any programming language. In this article we shall explore the ways that Python offers to manipulate and put some fancy masks on those bits. Understanding Bit Manipulation in Python Bit manipulation is…
There can be times at which one would face results with umpteen decimal digits, beyond the comprehensible capabilities of an average human. So, reducing them to something understandable goes a long way in the books of interpreting data. In this…