Aliased Imports

Any import can take an alias — and an aliased import is qualified-only, exactly like Python's import pandas as pd. Nothing enters your bare namespace except the alias itself:

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use math as m

sum = 0
for x in [1, 2, 3]
    sum = sum + x
log[sum]
log[m.sum[[10.0, 20.0]]]

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Look at what happened there: with use math as m, the name sum stayed yours — the accumulator is an ordinary variable — while math's sum is reached as m.sum. The alias is the escape valve for exactly the moment when you and a module want the same word.

Calling sum[...] bare in that file is a compile error that names the fix:

use math as m
log[sum[[1.0, 2.0]]]    --- error: 'sum' comes from math which was
                        --- imported as 'm' — call m.sum[...]