What does DeprecationWarning mean when running Python

Question

I ran a Python program and got a DeprecationWarning, like:

D:\programs\anaconda2\lib\site-packages\sklearn\utils\deprecation.py:70: DeprecationWarning: Function log_multivariate_normal_density is deprecated; The function log_multivariate_normal_density is deprecated in 0.18 and will be removed in 0.20. 
  warnings.warn(msg, category=DeprecationWarning)

I can't confirm what is wrong about it. What is a DeprecationWarning?

Did you try reading the warning text? (If you don't know the meaning of the word "deprecated", you could simply look it up.) — user2357112, Jul 06 '17 at 09:00
The function log_multivariate_normal_density is deprecated in 0.18 and will be removed in 0.20. It is just what the warning says — seralouk, Jul 06 '17 at 10:13

score 7 · Accepted Answer · answered Jul 06 '17 at 09:06

7

In general developers are developing libraries and in developing sometime add o change thing and sometime remove theme. removing is danger because user may used that and if a developer want to remove a thing first have to notify others to don't use this feature or things and after this he can remove. and DeprecationWarning is this notification.

answered Jul 06 '17 at 09:06

sahama

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ok, I know; thank you! it means now I can use this but this will be removed in next version(0.2here),yes? – vx2008 Jul 07 '17 at 00:42
perhaps yes. usually it will be removes as soon as possible. – sahama Jul 08 '17 at 05:26

What does DeprecationWarning mean when running Python

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