Mailman 3 May 2008 - NumPy-Discussion

should abs gives negative at end of integer range?
by Jonathan Wright May 25, 2008

May 25, 2008

This one comes up in a Java puzzler, but applies equally to numpy. http://www.youtube.com/watch?v=wDN_EYUvUq0 >>> import numpy, sys >>> abs(numpy.array([-sys.maxint-1],numpy.int)) > 0 array([False], dtype=bool) >>> abs(numpy.array([-129,-128,-127],numpy.int8)) > 0 array([ True, False, True], dtype=bool) ... etc. Sort of surprising that abs gives something negative. Is this the intended behaviour as covered by a unit test and doc already? -Jon

2 1

Not all typecodes have names
by Charles R Harris May 25, 2008

May 25, 2008

? bool b signed char h short i integer l long integer q long long integer p p ---- B unsigned char H unsigned short I unsigned integer L unsigned long integer Q unsigned long long integer P P ---- f single precision d double precision g long precision F complex single precision D complex double precision G complex long double precision S string U unicode V void O object The typecodes come from typecode['All'] and the typenames from typename(). What are the names that should go with p and P? Chuck

2 1

Buildbot errors.
by Charles R Harris May 24, 2008

May 24, 2008

The python 2.6 buildbots are showing 5 failures that are being hidden by valgrind. Chuck

4 9

1.1.x branch and 1.1.0 tag imminent
by Jarrod Millman May 24, 2008

May 24, 2008

Hello, I plan to branch 1.1.x and tag 1.1.0 later today. As of now, please consider the trunk in an near absolute freeze. If you feel that there is some unimaginably important change that must take place before we branch and tag, please send an email to the mailing list including your proposed patch and an explanation of why it is absolutely necessary. If the list overwhelmingly agrees with you, I will consider applying the patch before branching. If there is any reason why I shouldn't branch right now, please let me know ASAP! Thanks to everyone who put so much time and effort into this release. The trunk has seen tremendous improvements in terms of bug-fixing, increased testing and improved documentation. I am looking forward to a whole host of improvements over the summer. Once I create the new branch, I will designate the trunk ready for 1.2 development. Despite the increased minor number, please remain cautious with your changes. As always any changes to the trunk shouldn't break it. If you have more experimental work that you want to try, please create a branch. Thanks, -- Jarrod Millman Computational Infrastructure for Research Labs 10 Giannini Hall, UC Berkeley phone: 510.643.4014 http://cirl.berkeley.edu/

4 8

Closing ticket #164 and Windows XP 64 on AMD hardware.
by Charles R Harris May 24, 2008

May 24, 2008

Hi All, I was about to close ticket #164 when I found this thread from almost a year ago: http://thread.gmane.org/gmane.comp.python.numeric.general/16296/focus=16302. Does anyone know if these issues have all been resolved? Chuck

1 0

SciPy page needs link to the FAQ
by Charles R Harris May 24, 2008

May 24, 2008

That's all. Chuck

1 0

numpy.test() (failures=2, errors=3)
by Nils Wagner May 24, 2008

May 24, 2008

Hi all, I found two failures and three errors wrt numpy.test() numpy.__version__ '1.2.0.dev5228' ====================================================================== ERROR: Ticket #396 ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/numpy/core/tests/test_regression.py", line 602, in check_poly1d_nan_roo self.failUnlessRaises(np.linalg.LinAlgError,getattr,p,"r") File "/usr/lib64/python2.5/unittest.py", line 320, in failUnlessRaises callableObj(*args, **kwargs) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 661, in __getattr__ return roots(self.coeffs) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 124, in roots roots = _eigvals(A) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 40, in _eigvals return eigvals(arg) File "/usr/local/lib64/python2.5/site-packages/scipy/linalg/decomp.py", line 478, in eigvals return eig(a,b=b,left=0,right=0,overwrite_a=overwrite_a) File "/usr/local/lib64/python2.5/site-packages/scipy/linalg/decomp.py", line 150, in eig a1 = asarray_chkfinite(a) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/function_base.py", line 527, in asarray_chkfinite raise ValueError, "array must not contain infs or NaNs" ValueError: array must not contain infs or NaNs ====================================================================== ERROR: Ticket #396 ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/numpy/core/tests/test_regression.py", line 602, in check_poly1d_nan_roo self.failUnlessRaises(np.linalg.LinAlgError,getattr,p,"r") File "/usr/lib64/python2.5/unittest.py", line 320, in failUnlessRaises callableObj(*args, **kwargs) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 661, in __getattr__ return roots(self.coeffs) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 124, in roots roots = _eigvals(A) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/polynomial.py", line 37, in _eigvals return eigvals(arg) File "/usr/local/lib64/python2.5/site-packages/scipy/linalg/decomp.py", line 478, in eigvals return eig(a,b=b,left=0,right=0,overwrite_a=overwrite_a) File "/usr/local/lib64/python2.5/site-packages/scipy/linalg/decomp.py", line 150, in eig a1 = asarray_chkfinite(a) File "/usr/local/lib64/python2.5/site-packages/numpy/lib/function_base.py", line 527, in asarray_chkfinite raise ValueError, "array must not contain infs or NaNs" ValueError: array must not contain infs or NaNs ====================================================================== ERROR: test_hdquantiles (numpy.ma.tests.test_morestats.TestQuantiles) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/numpy/ma/tests/test_morestats.py", line 97, in test_hdquantiles hdq = hdquantiles_sd(data,[0.25, 0.5, 0.75]) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/morestats.py", line 168, in hdquantiles_sd result = _hdsd_1D(data.compressed(), p) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/morestats.py", line 144, in _hdsd_1D xsorted = numpy.sort(data.compressed()) AttributeError: 'numpy.ndarray' object has no attribute 'compressed' ====================================================================== FAIL: Tests the Marits-Jarrett estimator ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/numpy/ma/tests/test_morestats.py", line 36, in test_mjci assert_almost_equal(mjci(data),[55.76819,45.84028,198.8788],5) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 134, in assert_almost_equal return assert_array_almost_equal(actual, desired, decimal, err_msg) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 227, in assert_array_almost_equal header='Arrays are not almost equal') File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 193, in assert_array_compare assert cond, msg AssertionError: Arrays are not almost equal (mismatch 33.3333333333%) x: array([ 55.76818915, 45.84027529, 198.8787528 ]) y: array([ 55.76819, 45.84028, 198.8788 ]) ====================================================================== FAIL: Test quantiles 1D - w/ mask. ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib64/python2.5/site-packages/numpy/ma/tests/test_mstats.py", line 61, in test_1d_mask [24.833333, 50.0, 75.166666]) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 134, in assert_almost_equal return assert_array_almost_equal(actual, desired, decimal, err_msg) File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 227, in assert_array_almost_equal header='Arrays are not almost equal') File "/usr/local/lib64/python2.5/site-packages/numpy/ma/testutils.py", line 193, in assert_array_compare assert cond, msg AssertionError: Arrays are not almost equal (mismatch 66.6666666667%) x: array([ 24.83333333, 50. , 75.16666667]) y: array([ 24.833333, 50. , 75.166666]) ---------------------------------------------------------------------- Ran 1290 tests in 1.993s FAILED (failures=2, errors=3)

3 3

numpy.ndarray.astype conversion
by Orest Kozyar May 24, 2008

May 24, 2008

The following line: array([6.95e-5]).astype('S') returns: array(['6'], dtype='|S1') I realize that I can get it to return the correct string representation if I specify 'S12', etc, but anything below 'S9' results in an incorrect string representation of the number. Is this expected behavior? Thanks! Orest

2 2

f2py errors: any help interpreting?
by Mark Miller May 23, 2008

May 23, 2008

To anyone who can help: I recently got around to installing numpy 1.04 over an older version (numpy 1.04dev3982) on a Windows Vista machine. Since then, I have been unable to compile some of my extensions using f2py. I also tested a fresh install of numpy 1.04 on a new XP machine that has never seen Python and am getting the same messages. Here's the relevant bits, I think. Wrote C/API module "pickparents" to file "c:\users\mark\appdata\local\temp\tmpiuxw9j\src.win32-2.5/pickparentsmodule.c" Traceback (most recent call last): File "C:\python25\scripts\f2py.py", line 26, in <module> main() File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 558, in main run_compile() File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 545, in run_compile setup(ext_modules = [ext]) File "C:\Python25\lib\site-packages\numpy\distutils\core.py", line 176, in setup return old_setup(**new_attr) File "C:\Python25\lib\distutils\core.py", line 151, in setup dist.run_commands() File "C:\Python25\lib\distutils\dist.py", line 974, in run_commands self.run_command(cmd) File "C:\Python25\lib\distutils\dist.py", line 994, in run_command cmd_obj.run() File "C:\Python25\lib\distutils\command\build.py", line 112, in run self.run_command(cmd_name) File "C:\Python25\lib\distutils\cmd.py", line 333, in run_command self.distribution.run_command(command) File "C:\Python25\lib\distutils\dist.py", line 994, in run_command cmd_obj.run() File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 130, in run self.build_sources() File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 147, in build_sources self.build_extension_sources(ext) File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 256, in build_extension_sources sources = self.f2py_sources(sources, ext) File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 513, in f2py_sources ['-m',ext_name]+f_sources) File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 367, in run_main ret=buildmodules(postlist) File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 319, in buildmodules dict_append(ret[mnames[i]],rules.buildmodule(modules[i],um)) File "C:\Python25\lib\site-packages\numpy\f2py\rules.py", line 1222, in buildmodule for l in '\n\n'.join(funcwrappers2)+'\n'.split('\n'): TypeError: cannot concatenate 'str' and 'list' objects Any thoughts? Please let me know if more information is needed to troubleshoot. -Mark

3 10

f2py errors: any help interpreting?
by Mark Miller May 23, 2008

May 23, 2008

To anyone who can help: I recently got around to installing numpy 1.04 over an older version (numpy 1.04dev3982) on a Windows Vista machine. Since then, I have been unable to compile some of my extensions using f2py. I also tested a fresh install of numpy 1.04 on a new XP machine that has never seen Python and am getting the same messages. Here's the relevant bits, I think. Wrote C/API module "pickparents" to file "c:\users\mark\appdata\local \temp\tmpiuxw9j\src.win32-2.5/pickparentsmodule.c" Traceback (most recent call last): File "C:\python25\scripts\f2py.py", line 26, in <module> main() File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 558, in main run_compile() File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 545, in run_compile setup(ext_modules = [ext]) File "C:\Python25\lib\site-packages\numpy\distutils\core.py", line 176, in setup return old_setup(**new_attr) File "C:\Python25\lib\distutils\core.py", line 151, in setup dist.run_commands() File "C:\Python25\lib\distutils\dist.py", line 974, in run_commands self.run_command(cmd) File "C:\Python25\lib\distutils\dist.py", line 994, in run_command cmd_obj.run() File "C:\Python25\lib\distutils\command\build.py", line 112, in run self.run_command(cmd_name) File "C:\Python25\lib\distutils\cmd.py", line 333, in run_command self.distribution.run_command(command) File "C:\Python25\lib\distutils\dist.py", line 994, in run_command cmd_obj.run() File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 130, in run self.build_sources() File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 147, in build_sources self.build_extension_sources(ext) File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 256, in build_extension_sources sources = self.f2py_sources(sources, ext) File "C:\Python25\lib\site-packages\numpy\distutils\command\build_src.py", line 513, in f2py_sources ['-m',ext_name]+f_sources) File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 367, in run_main ret=buildmodules(postlist) File "C:\Python25\lib\site-packages\numpy\f2py\f2py2e.py", line 319, in buildmodules dict_append(ret[mnames[i]],rules.buildmodule(modules[i],um)) File "C:\Python25\lib\site-packages\numpy\f2py\rules.py", line 1222, in buildmodule for l in '\n\n'.join(funcwrappers2)+'\n'.split('\n'): TypeError: cannot concatenate 'str' and 'list' objects Any thoughts? Please let me know if more information is needed to troubleshoot. -Mark

1 0