🌐 Mailman 3 September 2006 - Python-list - python.org

Einstein's Riddle
by Steve Graham Sept. 17, 2015

Sept. 17, 2015

Who would be interested in using his/her brain (and his computer) to solve the following? Steve Graham === Einstein's Riddle Albert Einstein wrote this riddle this century [ed. 20th century]. He said 98% of the world could not solve it. There are 5 houses in 5 different colors. In each house lives a person with a different nationality. The 5 owners drink a certain type of beverage, smoke a certain brand of cigar, and keep a certain pet. No owners have the same pet, smoke the same brand of cigar or drink the same beverage. The question is: "Who owns the fish?" Hints: The Brit lives in the red house. The Sweed keeps dogs as pets. The Dane drinks tea. The green house is on the left of the white house. The green house's owner drinks coffee. The person who smokes Pall Mall rears birds. The owner of the yellow house smokes Dunhill. The man living in the center house drinks milk. The Norwegian lives in the first house. The man who smokes Blends lives next to the one who keeps cats. The man who keeps the horse lives next to the man who smokes Dunhill. The owner who smokes Bluemasters drinks beer. The German smokes Prince. The Norwegian lives next to the blue house. The man who smokes Blends has a neighbor who drinks water.

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Python to C++ in a pickle
by Larry Whitley April 2, 2015

April 2, 2015

I'd like to pickle an object in python and unpickle it in C++. The object in question is a python dictionary so it will have to go into a C++ map. Has someone done this and is willing to share? Or, is the cPickle source available on the web somewhere? Larry

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Re: feature request: a better str.endswith
by Irmen de Jong Feb. 17, 2015

Feb. 17, 2015

Jp Calderone wrote: > On Fri, Jul 18, 2003 at 05:01:47AM -0700, Michele Simionato wrote: > >>I often feel the need to extend the string method ".endswith" to tuple >>arguments, in such a way to automatically check for multiple endings. >>For instance, here is a typical use case: >> >>if filename.endswith(('.jpg','.jpeg','.gif','.png')): >> print "This is a valid image file" >> >>Currently this is not valid Python and I must use the ugly >> >>if filename.endswith('.jpg') or filename.endswith('.jpeg') \ >> or filename.endswith('.gif') or filename.endswith('.png'): >> print "This is a valid image file" > > > extensions = ('.jpg', '.jpeg', '.gif', '.png') > if filter(filename.endswith, extensions): > print "This is a valid image file > > Jp > Using filter Michele's original statement becomes: if filter(filename.endswith, ('.jpg','.jpeg','.gif','.png')): print "This is a valid image file" IMHO this is simple enough to not require a change to the .endswith method... --Irmen

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Creating interactive command-line Python app?
by planetthoughtful Dec. 18, 2014

Dec. 18, 2014

Hello All, Newbie to Python, and I'm wondering if it's possible to create a Python console app that prompts for further input on the command line when run (in Windows XP, if that's important)? I've tried Googling, but the results are overwhelmingly about interactive Python environments (IPython etc etc), instead of how to achieve prompting at the command line when running your own Python app. Any help appreciated! Much warmth, planetthoughtful

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Need some help with NetGroupAddUser
by kcollins15＠cfl.rr.com Nov. 11, 2014

Nov. 11, 2014

New B question -- Need help with win32net.NetGroupAddUser. I used Mark Hammond sample code to create a new user from his book Python Programming on Win32. I then added one line to add the newuser to a group. def CreateUserAndShare(userName, fullName): homeDir = "%s\\%s" % (serverName, userName) # Create user data in information level 3 (PyUSER_INFO_3) format. userData = {} userData['name'] = userName userData['full_name'] = fullName userData['password'] = userName userData['flags'] = win32netcon.UF_NORMAL_ACCOUNT | win32netcon.UF_SCRIPT userData['priv'] = win32netcon.USER_PRIV_USER userData['home_dir'] = homeDir userData['home_dir_drive'] = "P:" userData['primary_group_id'] = ntsecuritycon.DOMAIN_GROUP_RID_USERS userData['password_expired'] = 1 # User must change password next logon. # Create the user win32net.NetUserAdd(serverName, 3, userData) win32net.NetGroupAddUser(serverName, "Administrator", userName) This is my error: pywintypes.api_error: (2220, 'NetGroupAddUser', 'The group name could not be found.') What should I be using for the groupname parameter, I've tried them all, Administrator, Guests, Users ext.... Any help will be greatly appreciated. Thanks, kc

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Re: print to screen and file with one print statement
by mmueller＠dgfz.de Aug. 27, 2014

Aug. 27, 2014

"Mark McEahern" <marklists(a)mceahern.com> wrote in message news:<mailman.1045085143.24238.python-list(a)python.org>... > Same basic idea: > > #!/usr/bin/env python > > import sys > > class MyWriter: > > def __init__(self, stdout, filename): > self.stdout = stdout > self.logfile = file(filename, 'a') > > def write(self, text): > self.stdout.write(text) > self.logfile.write(text) > > def close(self): > self.stdout.close() > self.logfile.close() > > writer = MyWriter(sys.stdout, 'log.txt') > sys.stdout = writer > > print 'test' > Hi Mark, works perfect. Just had to change ´file´ to ´open´ for my Python 2.1. Adding the method ´flush(self)´ to Writer helped to get my ´sys.stdout.flush()´ to work. Thanks also to two inches (previous post). Mike

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Python in Process Control?
by Wolfgang Keller March 24, 2014

March 24, 2014

Hello, is it that my know-how to use Google is insufficient or... ...does really noone use Python for industrial control applications? At least I didn't manage to find any publicly available modules for such things as OPC/fieldbus communication etc... TIA, best regards, Wolfgang Keller

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OPC for Python ?? (Win32)
by Armin Steinhoff March 24, 2014

March 24, 2014

Hi All, is there an implementation of OPC for Win32 Python available ?? ( http://www.opcfoundation.org ) Regards Armin

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Python OPC -wrapper for data collection, anyone seen it ?
by pekka niiranen March 24, 2014

March 24, 2014

Has anybody seen OPC -wrapper done in python ? In industry OPC -servers are breaking thru. It is a microsoft based technoloqy to gather process information. Many Control System manufacturers have their own OPC -servers. There exists a visual basic wrapper -library so that one write VB - programs to enquire data from OPC -server.Wrapper done to python would be cool. Mark Hammond was not interested, but I am not giving up yet... -pekka-

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Writing an OPC client with Python ?
by pierlau March 24, 2014

March 24, 2014

Hello, I use an OPC server for connection to DC Drive. I would like to write a small OPC client. I have the dll OPCDAAuto.dll which contains all class and method but I wonder if its possible to instance in python the class that are in the dll ? Thanks for your help . Pierre

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