Re: [Tutor] re-initialising shells
Jim Morcombe [EMAIL PROTECTED] wrote I have changed qwerty and saved it away. I have then run my program (F5) and the program acts as if it is using an old version of qwerty. You need to reload the module to pick up the changes. help(reload) Help on built-in function reload in module __builtin__: reload(...) reload(module) - module Reload the module. The module must have been successfully imported before. In addition there is a Restart menu option in IDLE that will effectively give you a new empty shell environment if you have lots of imported modules. However I'm not sure if reload will work if you use the from X import * approach since that imports all of the names rather than the module itself. In that case restart is probably the best bet - or switch to the safer import X style. HTH, -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Using 'join ' function to create a string
Hi there, I would like to know what is the best way to create a string object from two different lists using 'join' function. For example, I have X = ['a', 'b', 'c', 'd', 'e'] and Y = [1, 2, 3, 4, 5]. From X and Y, I want to create a string Z = 'a:1, b:2, c:3, d:4, e:5'. Any help would greatly be appreciated. -Lex - Looking for last minute shopping deals? Find them fast with Yahoo! Search.___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Using 'join ' function to create a string
On Fri, Dec 21, 2007 at 09:33:31AM -0700, Eric Brunson wrote: lechtlr wrote: Hi there, I would like to know what is the best way to create a string object from two different lists using 'join' function. For example, I have X = ['a', 'b', 'c', 'd', 'e'] and Y = [1, 2, 3, 4, 5]. From X and Y, I want to create a string Z = 'a:1, b:2, c:3, d:4, e:5'. How about something like this: , .join( '%s:%s' % ( x, y ) for x, y in zip( X, Y ) ) Slick. I believe that the argument you are passing to join() is the result of a generator expression. Am I right? And, I did not know that str.join(seq) could take an iterator as opposed to a plain sequence. Thanks for showing us that. Back to the original poster's problem, you could also try map() and a lambda: ', '.join(map(lambda x,y: '%s:%s' % (x, y, ), X, Y)) Or, maybe unrolling it makes it more readable: In [31]: fn = lambda x,y: '%s:%s' % (x, y, ) In [32]: ', '.join(map(fn, a, b)) Out[32]: 'aa:11, bb:22, cc:33' - Dave -- Dave Kuhlman http://www.rexx.com/~dkuhlman ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Using 'join ' function to create a string
lechtlr wrote: Hi there, I would like to know what is the best way to create a string object from two different lists using 'join' function. For example, I have X = ['a', 'b', 'c', 'd', 'e'] and Y = [1, 2, 3, 4, 5]. From X and Y, I want to create a string Z = 'a:1, b:2, c:3, d:4, e:5'. How about something like this: , .join( '%s:%s' % ( x, y ) for x, y in zip( X, Y ) ) Yields: 'a:1, b:2, c:3, d:4, e:5' Any help would greatly be appreciated. -Lex Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://us.rd.yahoo.com/evt=51734/*http://tools.search.yahoo.com/newsearch/category.php?category=shopping ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Using 'join ' function to create a string
lechtlr wrote:
Hi there,
I would like to know what is the best way to create a string object
from two different lists using 'join' function. For example, I have X
= ['a', 'b', 'c', 'd', 'e'] and Y = [1, 2, 3, 4, 5]. From X and Y, I
want to create a string Z = 'a:1, b:2, c:3, d:4, e:5'.
Best way? Depends on what you mean by best.
My solution:
Z = ', '.join(i+':'+str(j) for i, j in zip(X,Y))
It's interesting to note how close your output is to a dictionary display:
dict(zip(X,Y)) - {'a': 1, 'c': 3, 'b': 2, 'e': 5, 'd': 4}
BTW is is customary in Python to start variable names with lower case
letters (x,y,z) in this case.
Title case is then used for Classes
CAPS is used for CONSTANTS
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[Tutor] Cant write new line at end of file append
Hi all,
I need to write a newline at the end of a string I am appending to a
file. I tried ...
journal.write('%s#%s\n' % (jpeg[:-4], self.snap_init[feed]))
The text is all there but no new line at the end any idea what I
am doing wrong ? ... thought \n would do it.
Cheers
Dave
--
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html
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Re: [Tutor] Using 'join ' function to create a string
this works for me. Z=, .join([%s:%s %(a,Y[b]) for b,a in enumerate(X)]) lechtlr [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 12/21/2007 11:00 AM To tutor@python.org cc Subject [Tutor] Using 'join ' function to create a string Hi there, I would like to know what is the best way to create a string object from two different lists using 'join' function. For example, I have X = ['a', 'b', 'c', 'd', 'e'] and Y = [1, 2, 3, 4, 5]. From X and Y, I want to create a string Z = 'a:1, b:2, c:3, d:4, e:5'. Any help would greatly be appreciated. -Lex Looking for last minute shopping deals? Find them fast with Yahoo! Search.___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Python Challenge 2
I did this and got this string :- i hope you didnt translate it by hand. thats what computers are for. doing it in by hand is inefficient and that's why this text is so long. using string.maketrans() is recommended. now apply on the url Is that the answer because it does not solve the problem when I apply it to the url. First they came for the Danes, but I did not speak out because I am not a Dane. - Support the World Aids Awareness campaign this month with Yahoo! for Good___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] python CLI parser
Hello, could you have a short review of my CLI package. What it provides is a simple interface to create a shell. I'll be using it inside a bot I'm writing to manage it. Features: * pluggable commands * works over streams instead of stdin/stdout/stderr so it should be network aware (right?) Unfeatures: * not documented at all, right now Todos (for me of course, not for you, but open to suggestions): * import readline * provide TAB completion * make CTRL+d also a quitcommand * remove hardcoded quitCommands only provide defaults Necessary interface for a command: function(*args) returning a string (No smart output of dicts, list or suche yet) Builtin commands are noop and and echo. To run it do python main.py To leave it use quit or exit any comments are welcome, especially how I could make CTRL+d leave my shell and I'm not looking at something that provides, I'm pretty sure someone did a similiar thing already :) thanks martin -- http://noneisyours.marcher.name http://feeds.feedburner.com/NoneIsYours cli.tar.bz2 Description: BZip2 compressed data ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Design Outline question for personal project
(please forgive the unclear thought process i am still trying to figure out what i need done and the order there of) i am going to set up a network of zigbee nodes. when a event such as: motion movement or touch awakens node i want it's alert to the network to trigger a programmed response. what i have to figure out is using a database maybe mysql or (cherrypy seems interesting as a http frame (can it send pop3 or imap? do i need a database if it does?). to store the node id's numbers and the email address i want sent. i need that node number to send it's associated email message to me at my account. so i believe that the zigbee node's have id already pre-programmed so that should not be an issuse. once the event (i'll need to have a program to take that report? or does the database do that already?) has been reported to the database, the node id should trigger an email? (do i need an email client to send that or does sockets have some thing to do with that?) that's really all that i can think i need which most likey means i am missing the boat. so i figure that i need to study as well as python. cherrypy: has a mini sever and database so i can use that instead of mysql? Twisted mail? do i have to use all of twisted or can i just use to mail part? socket? okay i will google it for some gen. info but pointers of focus can really help am i missing anything? thanks any bits of info helps just an non-cpu kinda guy with a plan. -- View this message in context: http://www.nabble.com/Design-Outline-question-for-personal-project-tp14460833p14460833.html Sent from the Python - tutor mailing list archive at Nabble.com. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Public Python Library Code
hello everyone i have just started to learn python, i know a little html, so this is my real first language. i am finding so much wondering advice sharing and tips, (a special nod to alan g. kent j.) :clap: i am wondering if there is a place a code library. i have spent way to much time window shopping all of the message, some give me ideas (yes i am going to be writing a program, if i get enough of a grasp). although i do count it as study time, it's a messing place to find code, (alan, i have checked out your site. you know your stuff but it's a full meal=)). i enjoy looking at the different ways ya'll write the different code for the same task. i would not mind starting a new child forum and start collecting code to jump start a code library. question::confused: is that out of line? copyrights and what not, or is that okay, being this is a public forum and those are like opinions?%-| if anyone has any suggests i am all ears. also if you one would like to point me in the right direct as to what i should be focusing on in regard to my personaly project. -- View this message in context: http://www.nabble.com/Public-Python-Library-Code-tp14460465p14460465.html Sent from the Python - tutor mailing list archive at Nabble.com. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design Outline question for personal project
jupiejupe wrote: so i figure that i need to study as well as python. thanks any bits of info helps just an non-cpu kinda guy with a plan. redefining list: cherrypy: has a mini sever and database so i can use that instead of mysql? Twisted mail? do i have to use all of twisted or can i just use to mail part? socket? okay i will google it am i missing anything? -- View this message in context: http://www.nabble.com/Design-Outline-question-for-personal-project-tp14460833p14461182.html Sent from the Python - tutor mailing list archive at Nabble.com. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Challenge 2
David Holland [EMAIL PROTECTED] wrote i hope you didnt translate it by hand. thats what computers are for. doing it in by hand is inefficient and that's why this text is so long. using string.maketrans() is recommended. now apply on the url Is that the answer because it does not solve the problem when I apply it to the url. I believe (its a while since I did the challenge) that you have solved it and got to that page. However you could have solved it the hard way so the note is telling you the esy way. Now apply that easy way to the url to get the url of the next challenge. At least thats how I remember it, but it is an adventure game after all... Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Design Outline question for personal project
jupiejupe [EMAIL PROTECTED] wrote i am going to set up a network of zigbee nodes. when a event such as: motion movement or touch awakens node i want it's alert to the network to trigger a programmed response. what i have to figure out is using a database maybe mysql or Yes, and you might find it useful to define a Node as a class. (cherrypy seems interesting as a http frame (can it send pop3 or imap? do i need a database if it does?). Yes it can do pop and imap vuia standard python pop and imap email modules and no it doesn't need a database for email. Databases just store data and allow you to retrieve it. (OK some have fancy trigger/event mechanisms too) so i believe that the zigbee node's have id already pre-programmed so that should not be an issuse. Sounds like it. once the event (i'll need to have a program to take that report? or does the database do that already?) has been reported to the database, You probably want a node object to retrieve the data from the database and use that to send the email usong the standard python email modules. the node id should trigger an email? (do i need an email client to send that or does sockets have some thing to do with that?) that's really all that i can think i need which most likey means i am missing the boat. Sockets are involved bt the email modules should shield you from all of that. so i figure that i need to study as well as python. cherrypy: has a mini sever and database so i can use that instead of mysql? You could use standard CGI for this but CherryPy might make it easier. Twisted mail? do i have to use all of twisted or can i just use to mail part? socket? You definitely don't need Twisted at this stage. Standard Python email modules should do all you need. You might want some classes and hence some OOP -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Public Python Library Code
jupiejupe [EMAIL PROTECTED] wrote i am wondering if there is a place a code library. There are several. For production code look in the standard library and the Python Cheeseshop - a place fort contributed modules. And don't forget to read the sample scripts that come with the Python download For sample programs and simpler projects try the Useless Python web site. The old site (linked from the page) had a lot of contributed short code samples. I'm not sure about the latest incarnation. Finally try the ActiveState site which has a Recipes section (or Cookbook) for solving common problems (there is a paper book containing the most common). There are plebnty other sites too but that should be enough to start! i have spent way to much time window shopping all of the message, some give me ideas (yes i am going to be writing a program, if i get enough of a grasp). although i do count it as study time, it's a messing place to find code, (alan, i have checked out your site. you know your stuff but it's a full meal=)). i enjoy looking at the different ways ya'll write the different code for the same task. i would not mind starting a new child forum and start collecting code to jump start a code library. question::confused: is that out of line? copyrights and what not, or is that okay, being this is a public forum and those are like opinions?%-| if anyone has any suggests i am all ears. also if you one would like to point me in the right direct as to what i should be focusing on in regard to my personaly project. -- View this message in context: http://www.nabble.com/Public-Python-Library-Code-tp14460465p14460465.html Sent from the Python - tutor mailing list archive at Nabble.com. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Cant write new line at end of file append
- Original Message -
From: dave selby [EMAIL PROTECTED]
To: Python Tutor tutor@python.org
Sent: Friday, December 21, 2007 12:03 PM
Subject: [Tutor] Cant write new line at end of file append
Hi all,
I need to write a newline at the end of a string I am appending to a
file. I tried ...
journal.write('%s#%s\n' % (jpeg[:-4], self.snap_init[feed]))
The text is all there but no new line at the end any idea what I
am doing wrong ? ... thought \n would do it.
Cheers
Dave
Different operating systems deal with newline differently, and sometimes
libraries are built upon the assumption that a particular operating system
uses a particular style of newline. Have you tried \r\n?
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Re: [Tutor] Python Challenge 2
I did this and got this string :- i hope you didnt translate it by hand. thats what computers are for. doing it in by hand is inefficient and that's why this text is so long. using string.maketrans() is recommended. now apply on the url Is that the answer because it does not solve the problem when I apply it to the url. Not to the whole url! Then it wouldn't be a url anymore! Just to ___.html part that is three letters long. And generally you shouldn't post answers to the challenges on public lists, because they can spoil it for others wanting to take the challenge. JS ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] python CLI parser
Martin Marcher wrote: Hello, could you have a short review of my CLI package. .bz2??? What does that extension mean? (For us Windows folk). Or could you attach a simple zip file? [snip] ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] python CLI parser
Martin Marcher [EMAIL PROTECTED] wrote: Hello, could you have a short review of my CLI package. Hi, it looks alright, it's really rather tiny. For one I could do with spaces between functions for the sake of readability. And it would make more sense to check the callback for being a callable once - while registering it, instead of every time it's triggered. It's good to program defensively, especially in a dynamic language like python, where you can hardly stop anyone (yourself) from stuffing the dict with uncallable garbage. But in this case, you deserve the exception as it's up to you, the programmer, to register the commands. The check should not be necessary if you write your program correctly. As for CTRL+D, it fires an EOF. The manual for readline() says: A trailing newline character is kept in the string An empty string is returned when EOF is encountered immediately. but you strip() the command (in two places) and lose the chance of checking for that very case. Hope this helps. tezlo ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Regular Expression
I need to pull the highligted data from a similar file and can't seem to get
my script to work:
Script:
import re
infile = open(filter.txt,r)
outfile = open(out.txt,w)
patt = re.compile(r~02([\d{10}]))
for line in infile:
m = patt.match(line)
if m:
outfile.write(%s\n)
infile.close()
outfile.close()
File:
200~02001491~05070
200~02001777~05070
200~02001995~05090
200~02002609~05090
200~02002789~05070
200~012~02004169~0
200~02004247~05090
200~02008623~05090
200~02010957~05090
200~02 011479~05090
200~0199~02001237~
200~02011600~05090
200~012~02 022305~0
200~02023546~05090
200~02025427~05090
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[Tutor] Regular Expression
Que,
I haven't tested the script, but please note that patt.match(line)
will only succeed when the pattern is at the start of the line. Use
patt.search(line) if you want to find the pattern anywhere within the
line.
Based on your desired highlight, you might want to use the pattern,
patt = re.compile(r~02(\d*)~)
Also, your outfile.write command below doesn't provide any substitute
for %s. Presumably you mean outfile.write(%s\n % m.group(1)) .
Good luck,
Michael
On Friday December 21, 2007, Que Prime wrote:
I need to pull the highligted data from a similar file and can't seem to
get
my script to work:
Script:
import re
infile = open(filter.txt,r)
outfile = open(out.txt,w)
patt = re.compile(r~02([\d{10}]))
for line in infile:
m = patt.match(line)
if m:
outfile.write(%s\n)
infile.close()
outfile.close()
File:
200~02001491~05070
200~02001777~05070
200~02001995~05090
200~02002609~05090
200~02002789~05070
200~012~02004169~0
200~02004247~05090
200~02008623~05090
200~02010957~05090
200~02 011479~05090
200~0199~02001237~
200~02011600~05090
200~012~02 022305~0
200~02023546~05090
200~02025427~05090
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Re: [Tutor] Regular Expression
I need to pull the highligted data from a similar file and can't seem to
get
my script to work:
Script:
import re
infile = open(filter.txt,r)
outfile = open(out.txt,w)
patt = re.compile(r~02([\d{10}]))
You have to allow for the characters at the beginning and end too.
Try this.
re.compile(r.*~02(\d{10})~.*)
Also outfile.write(%s\n) literally writes %s\n
You need this I believe
outfile.write(%s\n % m.group(1))
for line in infile:
m = patt.match(line)
if m:
outfile.write(%s\n)
infile.close()
outfile.close()
File:
200~02001491~05070
200~02001777~05070
200~02001995~05090
200~02002609~05090
200~02002789~05070
200~012~02004169~0
200~02004247~05090
200~02008623~05090
200~02010957~05090
200~02 011479~05090
200~0199~02001237~
200~02011600~05090
200~012~02 022305~0
200~02023546~05090
200~02025427~05090
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Re: [Tutor] Regular Expression
You need to pass a parameter to the string in the following line:
outfile.write(%s\n % m.string[m.start():m.end()])
And you need to use m.search, not m.match in the line where you're
actually apply the expression to the string
m = patt.search(line)
--Michael
On 12/21/07, Que Prime [EMAIL PROTECTED] wrote:
I need to pull the highligted data from a similar file and can't seem to get
my script to work:
Script:
import re
infile = open(filter.txt,r)
outfile = open(out.txt,w)
patt = re.compile(r~02([\d{10}]))
for line in infile:
m = patt.match(line)
if m:
outfile.write(%s\n)
infile.close()
outfile.close()
File:
200~02001491~05070
200~02001777~05070
200~02001995~05090
200~02002609~05090
200~02002789~05070
200~012~02004169~0
200~02004247~05090
200~02008623~05090
200~02010957~05090
200~02 011479~05090
200~0199~02001237~
200~02011600~05090
200~012~02 022305~0
200~02023546~05090
200~02025427~05090
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--
Michael Langford
Phone: 404-386-0495
Consulting: http://www.RowdyLabs.com
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