🌐 Mailman 3 November 2007 - Python-list - python.org

Create thumbnail image (jpg/png) of PDF file using Python
by sophie_newbie June 14, 2012

June 14, 2012

Is there any way to do this directly within python? If not is there any other good way to achieve it? Thanks in advance for any help!

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Mouse LED Control in Python
by semagraw＠gmail.com May 28, 2012

May 28, 2012

I found this link that describes the byte arrays to control the IM/Email Leds on my Logitech MX610 mouse: http://www.kdedevelopers.org/node/2029 The link to the tarball is dead so I can't look at that. Is there anyway to do what the link says in Python? If you follow the link above, it talks about 'sending the byte array to 0x10 (16)'. I'm not sure if that is possible in python. Can anyone help or point me in the right direction? I'd also be willing to have this be done in another language and just call different programs from a python program when I need something specific done (IM light on, for example). Text from the link if you can't be bothered to follow it: "I've figured out the IM led now. As before, you send 6 bytes to report ID 0x10 (16), followed by the "confirm" message. The magic values are: unsigned char confirm[6] = { 0x01, 0x80, 0x52, 0x00, 0x00, 0x00 }; unsigned char email_off[6] = { 0x01, 0x80, 0x52, 0x06, 0x00, 0x00 }; unsigned char email_on[6] = { 0x01, 0x80, 0x52, 0x05, 0x00, 0x00 }; unsigned char email_pulse[6] = { 0x01, 0x80, 0x52, 0x04, 0x00, 0x00 }; unsigned char email_flash[6] = { 0x01, 0x80, 0x52, 0x03, 0x00, 0x00 }; unsigned char email_instanton[6] = { 0x01, 0x80, 0x52, 0x02, 0x00, 0x00 }; unsigned char email_instantoff[6] = { 0x01, 0x80, 0x52, 0x01, 0x00, 0x00 }; unsigned char im_off[6] = { 0x01, 0x80, 0x52, 0x00, 0x06, 0x00 }; unsigned char im_on[6] = { 0x01, 0x80, 0x52, 0x00, 0x05, 0x00 }; unsigned char im_pulse[6] = { 0x01, 0x80, 0x52, 0x00, 0x04, 0x00 }; unsigned char im_flash[6] = { 0x01, 0x80, 0x52, 0x00, 0x03, 0x00 }; unsigned char im_instantoff[6] = { 0x01, 0x80, 0x52, 0x00, 0x01, 0x00 }; unsigned char im_instanton[6] = { 0x01, 0x80, 0x52, 0x00, 0x02, 0x00 };" Thanks, Jeff

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Pydev configuration
by Sébastien Boisgérault May 10, 2012

May 10, 2012

Hi, Did anyone managed to change the code font family/size in Pydev (Python Editor Plugin for Eclipse) ? I found how to change the color mapping (Windows/Preference/Pydev) but did not found the font setting. Cheers, SB

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A 'Python like' language
by Peter Hickman March 3, 2012

March 3, 2012

Well after all this discussion it would appear that a 'Python like' language has appeared => Prothon. http://www.prothon.org/index.html Very alpha, sort of like Python (if you consider the indenting is what makes Python unique) and sort of Ruby in its use of prefixes to define scoping etc (although there is no reference to this trait being borrowed from Ruby). It also quotes Self as being an influence.

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AIX installation can't find zlib
by Larry Whitley Nov. 3, 2011

Nov. 3, 2011

I've just installed the 1.5.2 source distribution on an AIX system and when I say "import zlib" it responds: >>> import zlib Traceback (innermost last): File "<stdin>", line 1, in ? ImportError: No module named zlib >>> I'm not sure where zlib is supposed to be. It's not in the Lib subdirectory of Python-1.5.2. In the Modules subdirectory I find zlibmodule.c. Nothing germaine in the Objects subdirectory. Looked at config.log and config.status, no mention of zlib. Looking at the sys.path I see: .../ldw/Python-1.5.2> python Python 1.5.2 (#1, Jul 26 2000, 14:21:56) [C] on aix4 Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam >>> import sys >>> sys.path ['', '/.../rchland.ibm.com/fs/u1/ldw/Projects/Programs/wtCache', '/.../rchland.ibm.com/fs/u1/ldw/Python-1.5.2/Lib/', '/.../rchland.ibm.com/fs/u1/ldw/Python-1.5.2/Lib/plat-aix4', '/.../rchland.ibm.com/fs/u1/ldw/Python-1.5.2/Lib/lib-tk', '/.../rchland.ibm.com/fs/u1/ldw/Python-1.5.2/Modules'] >>> Any suggestions? Larry

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socket.inet_ntop, and pton question
by Andrew Aug. 5, 2009

Aug. 5, 2009

Hi Are these functions (inet_ntop(), inet_pton()) from the socket library supported on Windows. If not is there an equivalent for them using Windows Ive seen mention of people creating their own in order to use them Appreciate the help ty

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Proposal: Decimal literals in Python.
by Lennart Benschop July 14, 2009

July 14, 2009

Python has had the Decimal data type for some time now. The Decimal data type is ideal for financial calculations. Using this data type would be more intuitive to computer novices than float as its rounding behaviour matches more closely what humans expect. More to the point: 0.1 and 0.01 are exact in Decimal and not exact in float. Unfortunately it is not very easy to access the Decimal data type. To obtain the decimal number 12.34 one has to do something like this: import decimal x=decimal.Decimal("12.34") Of course we can intruduce a single character function name as an alias for the Decimal type constructor, but even then we have to use both parentheses and quotes for each and every decimal constant. We cannot make it shorter than D("12.34") With Python 3000 major changes to the language are carried out anyway. My proposal would require relatively minor changes. My proposal: - Any decimal constant suffixed with the letter "D" or "d" will be interpreted as a literal of the Decimal type. This also goes for decimal constants with exponential notation. Examples of decimal literals: 1d 12.34d 1e-3d (equivalent to 0.001d) 1e3d (same value as 1000d, but without trailing zeros). 1.25e5d (same value as 125000d but without trailing zeros). When we print a decimal number or convert it to a string with str(), a trailing d should not be added. The repr function does yield strings with a trailing d. When decimal numbers are converted from strings, both numbers with and without a trailing d should be accepted. If we have decimal literals in the core language, we should probably have a type constructor in the core namespace, e.g. dec() along with int() and float(). We then need the decimal module only for the more advanced stuff like setcontext. Pros: - the Decimal data type will be more readily accessible, especially for novices. - Traling characters at the end of a literal are already used (the L for long). - It does not conflict with the syntax of other numeric constants or language constructs. - It does not change the meaning of existing valid literal constants. Constants that used to be float will continue to do so. Cons: - The lexical scanner of the Python interpreter will be slightly more complex. - The d suffix for constants with exponential notation is ugly. - Decimal numbers with exponentail notation like 2e5d could be mistaken for hex (by humans, not by the parser as hex requires the 0x prefix). - It requires the decimal module to be part of the core Python interpreter. -- Lennart

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Re: renice
by Dan July 14, 2009

July 14, 2009

On Oct 26, 4:30 am, mokhtar <mbmessa...(a)yahoo.com> wrote: > Hi > > Is it possible to renice the python process executing the current python > script ?:confused: > -- > View this message in context:http://www.nabble.com/renice-tf4695834.html#a13422771 > Sent from the Python - python-list mailing list archive at Nabble.com. On UNIX: >>> import os >>> os.system("renice -n %d %d" % ( new_nice, os.getpid() ) ) (untested) I don't know if windows has the concept of renice... -Dan

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Unable to abort a FTP command?
by _wdx＠163.com April 15, 2009

April 15, 2009

Hi, I write the following script to retrieve a part of a large file from a FTP site: import ftplib class ftp_getter(object): def __init__(self): self.handle = ftplib.FTP('ftp_server_address') self.handle.set_debuglevel(2) self.login() def login(self): self.handle.login('user', 'pass') self.handle.cwd('/temp1/') def quit(self, is_close = False): self.handle.quit() if is_close: self.handle.close() print 'ftp handle closed' def getpart_callback(self, received): print "received a packet" if self.cnt <= 0: if not self.outf.closed: self.outf.close() if not self.aborted: try: self.handle.abort() self.aborted = True except Exception,ex: pass else: print 'received packet, [0] = %x' % ord(received[0]) self.outf.write(received) self.cnt -= len(received) def getpart(self, ftp_filename, rest, cnt, out_filename): self.outf = open(out_filename, 'wb') self.cnt = cnt self.aborted = False self.handle.retrbinary('RETR ' + ftp_filename, self.getpart_callback, 8192, rest) if not self.outf.closed: self.outf.close() if __name__ == '__main__': g = ftp_getter() g.getpart('FILE_TO_RETRIEVE.DAT', 50000, 20, 'out.dat') g.quit(True) print "all done." As the last four lines shown, I want to connect to my FTP server, retrieve 20 bytes starting at offset 50000 from FILE_TO_RETRIEVE.DAT, and stop retrieving after more than 20 bytes have been received. It's quite simple, but to my suprise, this code does not work. "self.handle.abort()" have been executed and I got the expected response from server(426), but the RETR command does not seem to stop at all. More and more data are received and getpart_callback method is called again and again. Why the RETR command is not actually aborted? Can anyone help me? Thanks Xu Wang

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decorators tutorials
by james_027 March 23, 2009

March 23, 2009

Hi, I am learning python by learning django, and I stumble upon decorator which is very cool, any beginners resources for python decorators, although I can google it, I just want to get a good tutorial for this topic. Thanks james

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