[NumPy-Tickets] [NumPy] #1530: please convert warnings to DeprecationWarning

[NumPy Trac]

#1530: please convert warnings to DeprecationWarning
-------------------------+--------------------------------------------------
 Reporter:  sandro.tosi  |       Owner:  somebody   
     Type:  defect       |      Status:  new        
 Priority:  normal       |   Milestone:  Unscheduled
Component:  Other        |     Version:  1.4.0rc1   
 Keywords:               |  
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 Hello,
 I'm here forwarding the bug filed in the Debian bts at
 http://bugs.debian.org/519483 .

 The ticket refers to 1.2.1 but the same still applies in 1.4.1 too, for
 example:

 {{{
 python-numpy-1.4.1$ grep -A4 warnings.warn numpy/lib/function_base.py
         warnings.warn("""
         The histogram semantics being used is now deprecated and
         will disappear in NumPy 2.0.  Please update your code to
         use the default semantics.
         """, DeprecationWarning)
 --
             warnings.warn("""
             The new semantics of histogram is now the default and the
 `new`
             keyword will be removed in NumPy 2.0.
             """, Warning)
         a = asarray(a)
 }}}

 and there are several other places where warnings.warn is used:

 {{{
 python-numpy-1.4.1$ grep warnings.warn numpy/* -rc | grep -v ':0$'
 numpy/core/memmap.py:2
 numpy/core/numeric.py:1
 numpy/core/setup_common.py:1
 numpy/ctypeslib.py:1
 numpy/distutils/command/config.py:2
 numpy/distutils/core.py:5
 numpy/distutils/cpuinfo.py:2
 numpy/distutils/exec_command.py:1
 numpy/distutils/fcompiler/gnu.py:1
 numpy/distutils/misc_util.py:1
 numpy/distutils/system_info.py:12
 numpy/lib/arraysetops.py:1
 numpy/lib/function_base.py:2
 numpy/lib/io.py:3
 numpy/lib/polynomial.py:1
 numpy/lib/utils.py:2
 numpy/ma/core.py:6
 numpy/ma/extras.py:1
 numpy/ma/mrecords.py:1
 numpy/numarray/alter_code2.py:1
 numpy/numarray/functions.py:4
 numpy/oldnumeric/alter_code2.py:1
 numpy/oldnumeric/ma.py:1
 numpy/polynomial/chebyshev.py:1
 numpy/polynomial/polynomial.py:1
 numpy/testing/tests/test_utils.py:2
 }}}

 If the warnings.warn is used to signal a deprecation coming in the near
 future, then using DeprecationWarning is more precise (it specifies
 exactly that) and also would allow users to silence them.

 Thanks for your support,
 Sandro

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1530>
NumPy <http://projects.scipy.org/numpy>
My example project