Mailman 3 May 2003 - SciPy-User

using scipy.plt - wxPyDeadObjectError after closing window
by Sebastian Haase May 6, 2003

May 6, 2003

Mark Bakker scipy-user(a)scipy.net Thu, 27 Feb 2003 10:39:23 -0500 wrote : >I am using scipy.plt from within PyShell and have 2 questions: >Why doesn't it work in IDLE? >After I close a window, I don't seem to be able to plot anything >anymore. Here is my error message when I try. Any thoughts? > <snip> > raise wxPyDeadObjectError( self.attrStr % self._name ) >wxPyDeadObjectError: The C++ part of the plot_frame object has been >deleted, attribute access no longer allowed. > >Thanks, >Mark Hi - I have the same problem - even though I am running plt from inside PyCrust (which is the wxWindows way of IDLE) (IDLE is tcl/tk (tkinter) which conflicts with wxPython - that's why scipy's plt doesn't like it) Am I (together with Mark) the only person who often (accidentally closes) the plot-window and then has to restart the whole session !? In other words: Is this an intrinsic wxPython problem or is that "just" a bug in scipy ? Regards - (and of course many thanks !! for scipy) Sebastian

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callbacks in weave
by Fernando Perez May 5, 2003

May 5, 2003

Hi all, I wonder if it's possible to call-back into python from weave-inlined code snippets. The included tutorial makes a passing mention of callable objects, but with no details. I tried the code below but failed to make much progress. Any help would be greatly appreciated. (For reference, I'm using a fairly recent CVS snapshot, from a week or two ago). Thanks in advance, Cheers, f. # Code snippet below: from weave import inline def foo(x,y): print "In Python's foo:" print 'x',x print 'y',y def cfoo(x,y): code = """ printf("Attemtping to call back foo() from C...\\n"); foo(x,y); printf("Done.\\n"); """ inline(code,"foo x y".split() ) x=99 y="Hello" print "Pure python..." foo(x,y) print "Via weave..." cfoo(x,y)

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failing installation of sciPy on OSX
by agn＠soc.soton.ac.uk May 4, 2003

May 4, 2003

I'm having problems in installing sciPy on OSX. Just installed MacPython 2.3b2 (using Jack Jansen's binary installer) & NumPy 23 (manually) over Andrew Straw's 'kitchen sink' binary installer for MacPython 2.3a, pygames etc... Also, ATLAS, LAPACK, FFTW etc.. Used latest CVS source for scipy, following on from an email of Andrew's I saw somewhere. When I do python setup.py install I get: ### Big Endian detected #### Traceback (most recent call last): File "setup.py", line 111, in ? setup_package() File "setup.py", line 90, in setup_package config_list += map(get_separate_package_config,separate_packages) File "setup.py", line 74, in get_separate_package_config return get_package_config(name,'') File "setup.py", line 68, in get_package_config config = mod.configuration(parent) File "Lib_chaco/freetype/setup_freetype.py", line 21, in configuration mod = build_ft._ft_ext_module() File "/Users/agn/Desktop/scipy/Lib_chaco/freetype/src/build_ft.py", line 75, in _ft_ext_module [mod.customize.add_extra_link_arg(x) for x in extra_link_args] AttributeError: custom_info instance has no attribute 'add_extra_link_arg' An earlier CVS source didn't have this problem, and got to the stage of searching for ATLAS and FFTW etc... Regards. George Nurser

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failing installation of sciPy on OSX
by George Nurser May 4, 2003

May 4, 2003

I'm having problems in installing sciPy on OSX. Just installed MacPython 2.3b2 (using Jack Jansen's binary installer) & NumPy 23 (manually) over Andrew Straw's 'kitchen sink' binary installer for MacPython 2.3a, pygames etc... Also, ATLAS, LAPACK, FFTW etc.. Used latest CVS source for scipy, following on from an email of Andrew's I saw somewhere. When I do python setup.py install I get: ### Big Endian detected #### Traceback (most recent call last): File "setup.py", line 111, in ? setup_package() File "setup.py", line 90, in setup_package config_list += map(get_separate_package_config,separate_packages) File "setup.py", line 74, in get_separate_package_config return get_package_config(name,'') File "setup.py", line 68, in get_package_config config = mod.configuration(parent) File "Lib_chaco/freetype/setup_freetype.py", line 21, in configuration mod = build_ft._ft_ext_module() File "/Users/agn/Desktop/scipy/Lib_chaco/freetype/src/build_ft.py", line 75, in _ft_ext_module [mod.customize.add_extra_link_arg(x) for x in extra_link_args] AttributeError: custom_info instance has no attribute 'add_extra_link_arg' An earlier CVS source didn't have this problem, and got to the stage of searching for ATLAS and FFTW etc... Regards. George Nurser

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URGENT ASSISTANCE
by Joseph Mobutu Sese-Seko May 3, 2003

May 3, 2003

Dear Sir/Madam, You may be surprise to receive this email since you do not know me. I am the son of the late president of Democratic Republic Of Zaire, President Mobutu Sese Seko, ( now The Republic Of Congo, under the leadership of the son of Mr. Laurent Kabila). I presume you are aware there is a financial dispute between my family ( THEMOBUTU ) and the present civilian Government. This is based on what they believe as bad and corrupt governance on my late father's part. May his soul rest in perfect peace. As you might have heard how a lot of my father's bank account in Switzerland and North America have been frozen. Following the above named reasons, I am soliciting for your humble and confidential assistance to take custody of THIRTY Million United States Dollars ( US$30,000,000.00 ), also to front for me in the areas of business you desire profitable. These funds have secretly been deposited into a confidential Security Company, where it can easily be withdrawn or paid to a recommended beneficiary. The funds will be released to you by the Security Company, based on my recommendations, on that note, you will be presented as my partner who will be fronting for me and my family in any subsequent ventures. Myself and my mother have decided to give 20% to you if you are able to help us claim this consignment. We have also decided to give you any money spent on phone calls or traveling expenses in the course of this transaction at the end of the transaction. Please, I need your entire support and co-operation for the success of this transaction, your utmost confidentiality and secrecy is highly required, due to my family's present predicament. I sincerely will appreciate your willingness to assist us as soon as possible. I am presently in the refugee camp here in the Netherlands under the united nations refugee camp in Netherlands and I can be reached on phone number +31.645.238.205 or E-mail me at josephmobutu48(a)latinmail.com for more information on how we can proceed in this transaction. Please indicate your interest by sending your telephone and fax numbers or call me up at anytime. I sincerely will appreciate your acknowledgement as soon as possible. Warmest regards, Joseph Mobutu Sese-Seko

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CONFIDENTIAL
by Joseph Mobutu Sese-Seko May 2, 2003

May 2, 2003

Dear Sir/Madam, You may be surprise to receive this email since you do not know me. I am the son of the late president of Democratic Republic Of Zaire, President Mobutu Sese Seko, ( now The Republic Of Congo, under the leadership of the son of Mr. Laurent Kabila). I presume you are aware there is a financial dispute between my family ( THEMOBUTU ) and the present civilian Government. This is based on what they believe as bad and corrupt governance on my late father's part. May his soul rest in perfect peace. As you might have heard how a lot of my father's bank account in Switzerland and North America have been frozen. Following the above named reasons, I am soliciting for your humble and confidential assistance to take custody of THIRTY Million United States Dollars ( US$30,000,000.00 ), also to front for me in the areas of business you desire profitable. These funds have secretly been deposited into a confidential Security Company, where it can easily be withdrawn or paid to a recommended beneficiary. The funds will be released to you by the Security Company, based on my recommendations, on that note, you will be presented as my partner who will be fronting for me and my family in any subsequent ventures. Myself and my mother have decided to give 20% to you if you are able to help us claim this consignment. We have also decided to give you any money spent on phone calls or traveling expenses in the course of this transaction at the end of the transaction. Please, I need your entire support and co-operation for the success of this transaction, your utmost confidentiality and secrecy is highly required, due to my family's present predicament. I sincerely will appreciate your willingness to assist us as soon as possible. I am presently in the refugee camp here in the Netherlands under the united nations refugee camp in Netherlands and I can be reached on phone number +31.645.238.205 or E-mail me at jmobutu12730(a)rediffmail.com for more information on how we can proceed in this transaction. Please indicate your interest by sending your telephone and fax numbers or call me up at anytime. I sincerely will appreciate your acknowledgement as soon as possible. Warmest regards, Joseph Mobutu Sese-Seko

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CONFIDENTIAL
by Joseph Mobutu Sese-Seko May 1, 2003

May 1, 2003

Dear Sir/Madam, You may be surprise to receive this email since you do not know me. I am the son of the late president of Democratic Republic Of Zaire, President Mobutu Sese Seko, ( now The Republic Of Congo, under the leadership of the son of Mr. Laurent Kabila). I presume you are aware there is a financial dispute between my family ( THEMOBUTU ) and the present civilian Government. This is based on what they believe as bad and corrupt governance on my late father's part. May his soul rest in perfect peace. As you might have heard how a lot of my father's bank account in Switzerland and North America have been frozen. Following the above named reasons, I am soliciting for your humble and confidential assistance to take custody of THIRTY Million United States Dollars ( US$30,000,000.00 ), also to front for me in the areas of business you desire profitable. These funds have secretly been deposited into a confidential Security Company, where it can easily be withdrawn or paid to a recommended beneficiary. The funds will be released to you by the Security Company, based on my recommendations, on that note, you will be presented as my partner who will be fronting for me and my family in any subsequent ventures. Myself and my mother have decided to give 20% to you if you are able to help us claim this consignment. We have also decided to give you any money spent on phone calls or traveling expenses in the course of this transaction at the end of the transaction. Please, I need your entire support and co-operation for the success of this transaction, your utmost confidentiality and secrecy is highly required, due to my family's present predicament. I sincerely will appreciate your willingness to assist us as soon as possible. I am presently in the refugee camp here in the Netherlands under the united nations refugee camp in Netherlands and I can be reached on phone number +31.645.238.205 or E-mail me at josephmobutu48(a)latinmail.com for more information on how we can proceed in this transaction. Please indicate your interest by sending your telephone and fax numbers or call me up at anytime. I sincerely will appreciate your acknowledgement as soon as possible. Warmest regards, Joseph Mobutu Sese-Seko

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Q:ReadOnly Trait combined with other Trait
by Norbert Klamann May 1, 2003

May 1, 2003

Hello, all, at first I like to say that I like scipy and especially the traits concept very much. I think it is very elaborate and useful. At the moment I try to achieve that instances of certain classes can have traits which make an attribute 'write-once' _and_ assure that the value belongs to a certain class and I wonder how to do that. Example : I want to create Values with units and I want to make sure that certain classes of Values can only have Units of certain classes. Each value with unit can have its unit set once (for the time being). At the moment I have the following : import traits from fixedpoint import FixedPoint as fp def _1timeonlyFixedPoint( object, name, value ): if name in object.__dict__ : raise AssertionError return fp(value,12) class ValueUnit(traits.HasTraits) : __traits__ = { 'unit' : Unit, 'value' : traits.Trait(fp(0),_1timeonlyFixedPoint) } def __init__(self, unit = Unit(), value = 0): self.unit = unit self.value = fp(value) #some units exist, Currency is a subclass of Unit EUR = Currency(name = 'Euro') USD = Currency(name = 'US Dollar') # several kinds of ValueUnit exist, for example : class MoneyValue(ValueUnit): __traits__ = { 'unit' : Currency()} def __init__(self, unit = EUR, value = 0): ValueUnit.__init__(self,unit,value) Now the point : Because I am not able and willing to convert the value when I change the unit (Currency), I want to make 'unit' a write-once attribute. I know this can be done with the ReadOnly trait, but I don't know how to combine this with the already defined trait 'unit' . TraitComplex would result in ORing the both traits, I want them ANDed. I could work around the problem if I create subclasses like EURMoneyValue or USDMoneyValue, but I don't like this proliferation of classes. I hope that I made my point clear and thank you for listening ! mit freundlichen Grüßen / with kind regards Norbert Klamann Norbert.Klamann(a)klamann-software.de -- Klamann Software & Beratung GmbH Franz-Marc-Str.174 D-50374 Erftstadt

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