When doing "import x as y", x is the library (set of tools you can use in your program) you import and y is what you would call it throughout your code. This is helpful to shorten things, for example "import numpy as np". Now you can just write "np" instead of "numpy".
In the image you would start every numpy statement with "pandas" and every pandas statement with "numpy". It just makes it confusing.
numpy and pandas are two different modules that have similar uses, but are most definitely not interchangeable. Line 500 is importing numpy, but calling it pandas. Meaning later on in the code, any time the script makes use of numpy, it actually has to refer to it as pandas, and vice versa, causing all sorts of confusion and shenanigans.