Python???import???as??????

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?????????pre   color   error   err   class   nbsp   ??????   ??????   ??????   

???Python????????????import???????????????????????????????????????????????????????????????as??????????????????

import dir1.dir2.mod

# ??????????????????mod????????????????????????dir1.dir2.mod
dir1.dir2.mod.X

??????????????????????????????????????????as?????????

import dir1.dir2.mod as m

# ??????????????????mod??????????????????????????????m
m. X

# ???????????????????????????as???????????????????????????as??????????????????????????????moudle
import mod as m
m.X  # OK
mod.X # Error

 

????????????as????????????????????????import???from????????????

import modulename as name  # ????????????name?????????

from modulename import attrname as name  # ????????????name?????????

 

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