python - Why is "import *" bad?

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It is recommended to not to use
import * in Python.

Can anyone please share the reason for that, so
that I can avoid it doing next time?

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• Because
  it puts a lot of stuff into your namespace (might shadow some other object from previous
  import and you won't know about it).
  




• Because you don't know exactly what
  is imported and can't easily find from which module a certain thing was imported
  (readability).




• Because you can't use
  cool tools like pyflakes to statically detect errors in your
  code.