Importing naming collisions can cause risks

pattern 1:
from xxx import yyy
from zzz import yyy

pattern 2:
from xxx import yyy as zzz
from aaa import bbb as zzz

pattern 3:
import yyy as zzz
import bbb as zzz

bad

from numpy import floor
from numpy import array
from math import floor # Overwrites already imported floor function

good

from numpy import floor as np_floor
from numpy import array as np_array
from math import floor # Does no longer overload numpy's floor function