Re: [Tutor] user created lists
On 2012/04/12 06:42 AM, john moore wrote: Hello Pyhton World, I'm new at this and was wondering how I create a number of user specified lists? Example: "How many list would you like to create?" User inputs 5 creates five lists, list1 [] list2 [] list3 [] list4 [] list5 [] I can create one with append, but I don't know how to loop it to create five different named list.. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor You can use vars() to create the variables on the fly. vars() is just a dictionary containing the variable name as the key, and the data as the value so you can do `vars()['list1'] = []` and it's easy enough to create them en masse # Set the start to 1, and add 1 to what the user inputted # as range/xrange doesn't include the top number for i in xrange(1, user_input + 1): vars()['list%s' % i] = [] Hope that helps. -- Christian Witts Python Developer // ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] write list to columns
Perfect, thank you.
Is there a way I could easily/quickly add headings to each column?
On Thu, Apr 12, 2012 at 1:03 PM, Puneeth Chaganti wrote:
> On Thu, Apr 12, 2012 at 8:01 AM, questions anon
> wrote:
> > I am trying to simply write a list of values to txt file in one column.
> > I would then like to add another list in a second column.
> > Somehow they only appear as one long row.
> > Any feedback will be greatly appreciated.
>
> You will need to write each line of the file separately, with the
> formatting you desire for each line.
> The following example may help.
>
>
> A = range(5)
> B = range(5, 10)
>
> records = zip(A, B)
> output_format = '%s %s'
>
> with open('output.txt', 'w') as f:
>for record in records:
>f.write(output_format %(record))
>f.write('\n')
>
>
> HTH,
> Puneeth
>
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[Tutor] user created lists
Hello Pyhton World, I'm new at this and was wondering how I create a number of user specified lists? Example: "How many list would you like to create?" User inputs 5 creates five lists, list1 [] list2 [] list3 [] list4 [] list5 [] I can create one with append, but I don't know how to loop it to create five different named list.. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] write list to columns
On Thu, Apr 12, 2012 at 8:01 AM, questions anon
wrote:
> I am trying to simply write a list of values to txt file in one column.
> I would then like to add another list in a second column.
> Somehow they only appear as one long row.
> Any feedback will be greatly appreciated.
You will need to write each line of the file separately, with the
formatting you desire for each line.
The following example may help.
A = range(5)
B = range(5, 10)
records = zip(A, B)
output_format = '%s %s'
with open('output.txt', 'w') as f:
for record in records:
f.write(output_format %(record))
f.write('\n')
HTH,
Puneeth
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Re: [Tutor] write list to columns
On 12-Apr-2012, at 8:01 AM, questions anon wrote: > I am trying to simply write a list of values to txt file in one column. > I would then like to add another list in a second column. > Somehow they only appear as one long row. > Any feedback will be greatly appreciated. > > print "rain max values", rmax > print "yearmonth", month year 'print' adds newline automatically. More info: http://docs.python.org/reference/simple_stmts.html#print > OutputFolder=r"E:/test_out/" > myfile=open(OutputFolder+'test.txt','w') > myfile.write(str(monthyear)) > myfile.write(str(rmax)) > myfile.close() 'write' does not add newline. You need to add '\n' where you want new line. -- shantanoo ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] write list to columns
I am trying to simply write a list of values to txt file in one column. I would then like to add another list in a second column. Somehow they only appear as one long row. Any feedback will be greatly appreciated. print "rain max values", rmax print "yearmonth", monthyear OutputFolder=r"E:/test_out/" myfile=open(OutputFolder+'test.txt','w') myfile.write(str(monthyear)) myfile.write(str(rmax)) myfile.close() In python: rain max values [43.8748, 35.8382701, 18.6598499, 60.2017099, 21.69989, 25.27929, 16.0810099, 14.1987299, 33.5246, 19.7101702, 22.9042099, 17.3019299, 39.3724102, 39.2906403, 25.4428201, 33.3223397, 28.2529701, 40.3887199, 8.76276001, 54.5164602, 109.756, 15.8635199, 31.5986001] yearmonth ['20110906', '20110907', '20110908', '20110909', '20110910', '20110911', '20110912', '20110913', '20110914', '20110915', '20110916', '20110917', '20110918', '20110919', '20110920', '20110921', '20110922', '20110923', '20110924', '20110925', '20110926', '20110927', '20110928'] in my text file: ['20110906', '20110907', '20110908', '20110909', '20110910', '20110911', '20110912', '20110913', '20110914', '20110915', '20110916', '20110917', '20110918', '20110919', '20110920', '20110921', '20110922', '20110923', '20110924', '20110925', '20110926', '20110927', '20110928'][43.8748, 35.8382701, 18.6598499, 60.2017099, 21.69989, 25.27929, 16.0810099, 14.1987299, 33.5246, 19.7101702, 22.9042099, 17.3019299, 39.3724102, 39.2906403, 25.4428201, 33.3223397, 28.2529701, 40.3887199, 8.76276001, 54.5164602, 109.756, 15.8635199, 31.5986001] ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] python connect() function
Hi Pierre, On 11 April 2012 15:49, Pierre Barthelemy wrote: > I have a question about event handling and the use of the connect > function. I have a data object, that contains a series of signals, one > being "new_data_point" . Where does this "connect function" come from and how does it work? Did you write it or is it part of some framework/third party software? Suffice it to say there is no standard "connect function" in plain Python itself that has to do with signals and event driven programming, so you really need to tell us a bit more about what frameworks etc you're using and what you're doing, otherwise we can't try to help you effectively. Walter ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] how to build a multiplayer game?
On 11/04/12 14:30, Surya K wrote: Don't you think DNS is required as IP addr may be same for some people in this world.. after all, we only have limited number of combinations. DNS only translates a names IP address into a numeric IP address. It does not create any extra addresses - thats why we are running out of IP numbers! You may be thinking of NAT which translates a public IP address into a local network address and thus allows many computers to share the same set of private IP addrewsses - 198.162,x.y for example can be used on any LAN and the LAN will be seen from the outside as another public IP address. But all of that would be handled by whatever network configuration you and your users have set up. The only exception might be that to get through a firewall you need to open up a particular port number. * I even got a wild idea, can't we use a IRC channel, create a group and we make sure that each user of the game will be a member of the group?? approx, how much delay would be there?? Yes thats a possibility too. But then you will need an IRC server somewhere. Setting up an IRC server is not much different from setting up a web app server. Delay on the internet is highly dependant on routing. If your packet happens to go the wrong way it can wind up jumping around all manner of very busy/slow networks before it reaches you, in which case it might take a few seconds to reach you. OTOH it might rout via a direct link betwen the two ISPs involved and the delay will be <=100ms... Part of the challenge of network programming is deciding how to deal with those two scenarios. It's perfectly possible for packets to arrive out of sync (ie packet two arrives before packet 1 because they were routed differently). Do you hold packet 2 and wait for the late packet or request a resend as soon as packet 2 arrives? There are no right or wrong answers, just different choices for a given scenario. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] how to build a multiplayer game?
On 11/04/12 11:02, Surya K wrote: I have written the basic part of the game. Now I want to make it a multiplayer one. (Its not a web app, a OS application) So, I just wanted to know how do it. Which topics I should refer? Network Programming or Web Programming or Internet Client Programming. That all depends on how you decide to build the game. And what kind of interaction you need. The fastest most direct route is to use raw peer to peer sockets and send string messages between the two computers. But then you need to decide how to set up the connection, who is master anmd who is slave per session etc. A lot less work if you adopt the web model of an app server in the middle and both players connect to that. For straight sockets you should find examples in Wes' book. Or you can read the network programming topic in my tutorial. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] how to build a multiplayer game?
I think you're on the right track with the IRC idea, but start with something simpler. You can find tutorials or working programs using the asynchat module to make a really basic chat client. Then you build a higher level protocol on top of that. It should take care of most of the low level networking for you. But when you're ready for that, look up nonblocking I/O and the select() system call. http://pypi.python.org/ http://code.activestate.com/recipes/langs/python/ http://docs.python.org/howto/sockets.html#non-blocking-sockets Cheers ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] need help with a script..
On 11/04/2012 14:50, Khalid Al-Ghamdi wrote: Hi All, I'm using python 3.2 on a windows xp. I wrote the below script and ran it with the hope of returning a list of proctors (list_proc), but when it runs it doesn't call the function convert_proctors() as intended. On the other hand, when i import the module from the IDLE prompt and call the convert_proctors() function, the function returns the desired list. Why is this so? Thanks 1. import csv 2. 3. proctor_file=r'c:\Python32\Khalid Stuff\Testing_Scheduler\p roctors.csv' 4. 5. 6. def convert_proctors(): 7. proctor_csv_reader = csv.reader(open(proctor_file)) 8. proctor_list=list(proctor_csv_reader) 9. list_proc=[] 10. for row in range(len(proctor_list)): 11. list_proc.append(proctor_list[row][0]) 12. return (list_proc) 13. 14. 15. convert_proctors() ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor Your main query has already been answered, but I'd like to point out that your function could be written something like this. def convert_proctors(): list_proc = [] for row in csv.reader(open(proctor_file)): list_proc.append(row[0]) return list_proc -- Cheers. Mark Lawrence. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] need help with a script..
got it thanks a lot On Wed, Apr 11, 2012 at 4:59 PM, Jerry Hill wrote: > On Wed, Apr 11, 2012 at 9:50 AM, Khalid Al-Ghamdi > wrote: > > Hi All, > > > > I'm using python 3.2 on a windows xp. > > > > I wrote the below script and ran it with the hope of returning a list of > > proctors (list_proc), but when it runs it doesn't call the function > > convert_proctors() as intended. On the other hand, when i import the > module > > from the IDLE prompt and call the convert_proctors() function, the > function > > returns the desired list. > > > > Why is this so? > > When you run that code as a script, it does call your > convert_proctors() function. But since all you do is create a list, > and you never save it to disk, or print it to the screen, or even > assign it to a variable, the result is just thrown away. Try changing > the last line to: > > print(convert_proctors()) > > and you'll see the results you were expecting. > > -- > Jerry > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] need help with a script..
On 2012/04/11 03:50 PM, Khalid Al-Ghamdi wrote: Hi All, I'm using python 3.2 on a windows xp. I wrote the below script and ran it with the hope of returning a list of proctors (list_proc), but when it runs it doesn't call the function convert_proctors() as intended. On the other hand, when i import the module from the IDLE prompt and call the convert_proctors() function, the function returns the desired list. Why is this so? Thanks 1. import csv 2. 3. proctor_file=r'c:\Python32\Khalid Stuff\Testing_Scheduler\proctors.csv' 4. 5. 6. def convert_proctors(): 7. proctor_csv_reader = csv.reader(open(proctor_file)) 8. proctor_list=list(proctor_csv_reader) 9. list_proc=[] 10. for row in range(len(proctor_list)): 11. list_proc.append(proctor_list[row][0]) 12. return (list_proc) 13. 14. 15. convert_proctors() ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor convert_proctors() will get called when you run the application from say the command line, but because there's no explicit printing of the resulting list it will never get displayed to your console. Whereas when you run it from IDLE it will implicitly print the return value of a function if you do not "save" the data to a variable. -- Christian Witts Python Developer // ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] need help with a script..
On Wed, Apr 11, 2012 at 9:50 AM, Khalid Al-Ghamdi wrote: > Hi All, > > I'm using python 3.2 on a windows xp. > > I wrote the below script and ran it with the hope of returning a list of > proctors (list_proc), but when it runs it doesn't call the function > convert_proctors() as intended. On the other hand, when i import the module > from the IDLE prompt and call the convert_proctors() function, the function > returns the desired list. > > Why is this so? When you run that code as a script, it does call your convert_proctors() function. But since all you do is create a list, and you never save it to disk, or print it to the screen, or even assign it to a variable, the result is just thrown away. Try changing the last line to: print(convert_proctors()) and you'll see the results you were expecting. -- Jerry ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] how to build a multiplayer game?
On Wed, Apr 11, 2012 at 9:30 AM, Surya K wrote: > Well, can we make the program so that user enters his IP, DNS addresses > before starting? You could, sure. That's fine for testing purposes, but most people don't know their own IP addresses. Many people don't have a DNS entry for their home PC. Also, what about NAT? > Don't you think DNS is required as IP addr may be same for some people in > this world.. after all, we only have limited number of combinations. > (xx.xx.xx.xx .. ) Again, not every computer has a DNS address. If you are going to ask a user to hand enter their IP address, it would make sense to accept either a numeric IP address, or a DNS name. > * I even got a wild idea, can't we use a IRC channel, create a group and we > make sure that each user of the game will be a member of the group?? Sure, but now you have to write (or embed) an IRC client. Do you need to worry about someone joining your channel that isn't using your game client? Does that have potential security implications? > approx, how much delay would be there?? That depends on the delay from each client to the IRC server. > Hmm, google app engine is a nice option but thing is I don't know how to use > it. You're going to have to learn quite a bit about networking and probably client / server architecture to write a networked game. -- Jerry ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] need help with a script..
Hi All, I'm using python 3.2 on a windows xp. I wrote the below script and ran it with the hope of returning a list of proctors (list_proc), but when it runs it doesn't call the function convert_proctors() as intended. On the other hand, when i import the module from the IDLE prompt and call the convert_proctors() function, the function returns the desired list. Why is this so? Thanks 1. import csv 2. 3. proctor_file=r'c:\Python32\Khalid Stuff\Testing_Scheduler\p roctors.csv' 4. 5. 6. def convert_proctors(): 7. proctor_csv_reader = csv.reader(open(proctor_file)) 8. proctor_list=list(proctor_csv_reader) 9. list_proc=[] 10. for row in range(len(proctor_list)): 11. list_proc.append(proctor_list[row][0]) 12. return (list_proc) 13. 14. 15. convert_proctors() ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] python connect() function
Hello,
I have a question about event handling and the use of the connect function.
I have a data object, that contains a series of signals, one being
"new_data_point" .
When i want to plot the data, i also connect the "new_data_point" event to
the function "analysis_client.update_plot". I therefore run the line:
data.connect('new_data_point', analysis_client.update_plot)
In this case, everytime the data object is updated, i also update the plot.
I would like to adapt this code to allow to have several plots, connected
to several data objects. I would therefore need to specify, when i connect
the "update_plot" function, which plots needs to be updated.
Is it possible to specify arguments to be used by the connected function
when the event occurs ? For instance, is there a way to write something
like:
data.connect('new_data_point',
analysis_client.update_plot(specific_plot_instance))
So that when the event occurs, the corresponding plot (and only this one)
is updated ?
Pierre
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Re: [Tutor] how to build a multiplayer game?
> Date: Wed, 11 Apr 2012 06:42:40 -0400 > From: d...@davea.name > To: sur...@live.com > CC: tutor@python.org > Subject: Re: [Tutor] how to build a multiplayer game? > > On 04/11/2012 06:02 AM, Surya K wrote: > > > > I have written the basic part of the game. Now I want to make it a > > multiplayer one. (Its not a web app, a OS application) > > So, I just wanted to know how do it. > > Which topics I should refer? Network Programming or Web Programming or > > Internet Client Programming. > > (There were the topics mentioned in Core Python Programming book). > > > > Can anyone tell me how do we achieve such a application (I mean without > > having a web server). I am not really ready to setup a Apache HTTP > > server. and all. > > > > You want to make two instances of the app talk to each other. If > they're on the same machine (unlikely for a real game, but might be used > for testing), or if they're on the same local network, then the features > you need are available in the stdlib. If you're going out on the web, > you need a host out there which will cooperate with the two apps (players). > > Same local network: Generally when both machines share a router or a > wifi connection, and would get to the web through the same ISP > connection. If you figure out what their IP addresses are, they can > talk directly, using sockets. > Well, can we make the program so that user enters his IP, DNS addresses before starting? Don't you think DNS is required as IP addr may be same for some people in this world.. after all, we only have limited number of combinations. (xx.xx.xx.xx .. ) * I even got a wild idea, can't we use a IRC channel, create a group and we make sure that each user of the game will be a member of the group??approx, how much delay would be there?? > Out on the web: You need a server that's on the web that each machine > can reach. It doesn't have to be your own, and I can't recommend any > particular one, but I'd bet google appserver would work. For that > matter, email would work, if you don't mind a pretty long delay between > turns. > Hmm, google app engine is a nice option but thing is I don't know how to use it. > For any more specific advice, somebody else had better pop in. > > -- > > DaveA > > > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] how to build a multiplayer game?
On 04/11/2012 06:02 AM, Surya K wrote: > > I have written the basic part of the game. Now I want to make it a > multiplayer one. (Its not a web app, a OS application) > So, I just wanted to know how do it. > Which topics I should refer? Network Programming or Web Programming or > Internet Client Programming. > (There were the topics mentioned in Core Python Programming book). > > Can anyone tell me how do we achieve such a application (I mean without > having a web server). I am not really ready to setup a Apache HTTP > server. and all. > You want to make two instances of the app talk to each other. If they're on the same machine (unlikely for a real game, but might be used for testing), or if they're on the same local network, then the features you need are available in the stdlib. If you're going out on the web, you need a host out there which will cooperate with the two apps (players). Same local network: Generally when both machines share a router or a wifi connection, and would get to the web through the same ISP connection. If you figure out what their IP addresses are, they can talk directly, using sockets. Out on the web: You need a server that's on the web that each machine can reach. It doesn't have to be your own, and I can't recommend any particular one, but I'd bet google appserver would work. For that matter, email would work, if you don't mind a pretty long delay between turns. For any more specific advice, somebody else had better pop in. -- DaveA ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] how to build a multiplayer game?
I have written the basic part of the game. Now I want to make it a multiplayer one. (Its not a web app, a OS application) So, I just wanted to know how do it. Which topics I should refer? Network Programming or Web Programming or Internet Client Programming. (There were the topics mentioned in Core Python Programming book). Can anyone tell me how do we achieve such a application (I mean without having a web server). I am not really ready to setup a Apache HTTP server. and all. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
