import alias with 'as'

Question

Accepted Answer

'import math as m' binds the module to the name 'm' and does not create a binding for 'math'. So m.floor(3.7) works fine and returns 3 (floor rounds down). But 'math.floor(3.7)' raises NameError because 'math' is not in scope. Aliases are common in data science (import numpy as np, import pandas as pd) precisely because they shorten repetitive qualified names. The tradeoff is that someone reading the code must know the alias conventions. If you alias a module, every access in that file must go through the alias - you cannot mix math.x and m.x.