[Tutor] Pygraphics crashed
How do I uninstall modules? I installed Pygraphics, which worked fine, along with some other mods, like numpy, but when I installed 64 bit py 2.7 I get the message The _imaging C module is not installed when running a prog that worked fine before. I think I have a higher dot-version - Py 2.7.4 as opposed to 2.7.3 - what's the easiest way to fix this? Will uninstalling and reinstalling the modules do anything or do I have to revert to an older Py (I'm on Win 7) And regardless of the answer to that I still want to know how to uninstall modules. Do I just find and delete them? And are they all in the same place? -- Jim Mooney ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Can't install latest PIL
Okay, I'm trying to install the latest PIL on win 7. It claims Python 2.7 was not found in the registry, although it's installed, on a path, and works fine. The install box lets you type in a directory but won't accept typing. I'm stumped. I guess the way around this is to know what I have to put in the registry. -- Jim Mooney “For anything that matters, the timing is never quite right, the resources are always a little short, and the people who affect the outcome are always ambivalent.” ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Can't install latest PIL
On Thu, May 16, 2013 at 2:12 AM, Jim Mooney cybervigila...@gmail.com wrote: Okay, I'm trying to install the latest PIL on win 7. It claims Python 2.7 was not found in the registry, although it's installed, on a path, and works fine. The install box lets you type in a directory but won't accept typing. I'm stumped. I guess the way around this is to know what I have to put in the registry. Make sure you have the correct architecture. The builds from PythonWare are 32-bit. Christoph Gohlke has 64-bit builds here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil As far as the registry goes, installing for everyone uses HKLM (local machine), else an installation uses HKCU (current user). The installed versions are in subkeys of [HKLM|HKCU]\Software\Python\PythonCore. Also, for WoW64 processes (i.e. 32-bit running on 64-bit Windows) the Software key is redirected to Software\Wow64Node. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Can't install latest PIL
Hi, On 16 May 2013 07:12, Jim Mooney cybervigila...@gmail.com wrote: Okay, I'm trying to install the latest PIL on win 7. It claims Python 2.7 was not found in the registry, although it's installed, on a path, and works fine. The install box lets you type in a directory but won't accept typing. I'm stumped. Are you using Python 32-bit or Python 64-bit? I'm guessing/seem to remember from your other posts, it's 64-bit and I'm guessing you're trying to install PIL for 32-bit Windows, which behaves in the way you describe if you try to use it on a Python 64-bit build. If I'm right, and you're indeed running 64-bit Windows, then you need to instead get a 64-bit build of PIL to match your Python build. Unfortunately the official PIL page does not contain 64-bit builds, however you can get an unofficial (meaning, done by a third party) version here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil Walter ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pygraphics crashed
On Thu, May 16, 2013 at 2:06 AM, Jim Mooney cybervigila...@gmail.com wrote: And regardless of the answer to that I still want to know how to uninstall modules. Do I just find and delete them? And are they all in the same place? You should be able to uninstall msi or exe packages just like any other Windows program. pip has an uninstall command if you used it to install a package. If you used easy_install, you'll have to manually delete associated eggs and egg-info directories from Lib\site-packages, defunct scripts in Scripts, and also edit Lib\site-packages\easy-install.pth to remove deleted cruft. It's definitely not easy_uninstall. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] question already discussed with oscar benjamin
On 7 May 2013 21:10, Linsey Raaijmakers lm.raaijmak...@gmail.com wrote: Hi, Im trying to work with the help Oscar provided me, but I still get stuck :( For the benefit of everyone else here, this is referring to a question that was asked on python-list. The discussion there went off-list and I recommended that it take place on-list but on this list instead of python-list. So what I'm trying to do now is write the program with the following input and output: The input/output specification below was my own suggestion of a subproblem to solve. The idea is that actions with integer identifiers have integer start/apex/end times and the program should read a file containing those and identify when actions are occurring simultaneously. The events in the file appear in order of start time. Input: action,start,apex,stop 3, 12, 13, 15 4, 15, 15, 15 3, 20, 21, 25 5, 21, 23, 30 ... And when you run your program it prints out: actions, start, stop [3], 12, 13 [], 14,15 [4], 15, 15 [], 16, 19 [3], 20, 21 [3, 5], 21, 21 [5], 22, 23 ... I don't want to use the stop. Only the start till apex is important. This is the code I have now: Not it's not. This code doesn't work. Can you post a complete program that actually runs rather than just a segment of it? See here: http://sscce.org/ now = onset_list[0] end = apex_list[0] active = action_list[0] for i in range(1,len(onset_list)): next_start = onset_list[i] next_end = apex_list[i] next_active = action_list[i] prev_end = apex_list[i-1] while next_start end: print active+\t+now+'\t'+end end = next_end now = next_start active = next_active print active+','+next_active+'\t'+now+'\t'+next_end This will just print each event and the following event. That is not what you want. You need to keep a list of currently active events and as you loop forward through the times you should remove events that have finished and add events that have started. But my output will print now: 31213 4,4 1515 4 1515 3,3 2021 3,5 2025 How do I fix that it doesn't print out the double ones? The problem is not that it prints the double ones. The problem is that it does not keep track of a list of currently active events. I'll make the problem a bit simpler: make a program that gives the following input/output. Input: action,start,apex,stop 3, 12, 13, 15 4, 15, 15, 15 3, 20, 21, 25 5, 21, 23, 30 ... And when you run your program it prints out: actions, time [3], 12 [3], 13 [], 14 [4], 15 [], 16 [], 17 [], 18 [], 19 [3], 20 [3, 5], 21 [5], 22 [5], 23 ... The first column in this output is the list of active events at the times given in the second column. Your code will need to actually have a list that it adds and removes from as events start and stop Oscar ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Looking for python 3 tutorial
On 08/05/13 03:30, Sky Flyinz wrote: Where can I find a web programming python tutorial online either book? How do you define web programming? Do you mean building web sites? Or scraping web sites? Or do you mean using web APIs? There is a web programming HowTo on the python web site that will get you started but without context its hard to recommend anything. At a general level the book Python Network Programming covers the basics. Are social media, email, live talk, and etc that called web programming for browser? They are all on the web and you can do programming on a browser but that's usually via JavaScript. Alternatively you can emulate a browser which is usually called web scraping. OTOH if you want to create a social media platform then that would be server side programming. Its not clear what exactly you want to find out. -- 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
[Tutor] Web forms was: Re: (no subject)
Please use a meaningful subject when posting it makes it easier to find things in the archives and identify related posts. On 10/05/13 21:44, Krish Nagpal wrote: I have a quick question based on python 2.7. Do you know how to write a web server with a form. I have no idea what you mean. A web server reacts to http requests and responds with HTML. HTML defines how to create forms. You just need to output the appropriate HTML text and your user will see a form. When the webserver gets a GET request, I need to serve the HTML document with a form. In response to a POST, i want to write the resulting data to a form. How do you distinguish between serving the form and writing data to the form? I don't understand the difference? Do you mean you want the same form but in some cases populated with data and in others blank? Do you know how to do this. Can you please help me quickly. The clearer you express the problem the quicker you will get an answer. HTH -- 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] Making a Primary Number List generator
On Thu, May 16, 2013 at 1:42 AM, eryksun eryk...@gmail.com wrote:
On the other hand a BufferedWriter will buffer the remaining 3000
bytes that can't be written. You won't find out until an exception is
raised when the file is closed:
Actually it was buffering all 4000 bytes. I forgot about the fast path
that initially fills the buffer. The default buffer size is 4 KiB to
match the block size on my ext4 file system. So if I limit file size
to 1000 bytes, I can 'write' 5096 bytes before it raises an exception:
resource.setrlimit(resource.RLIMIT_FSIZE, (1000, -1))
f = open('temp.bin', 'wb')
f.write(b'spam'*1274)
5096
f.write(b's')
Traceback (most recent call last):
File stdin, line 1, in module
OSError: [Errno 27] File too large
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[Tutor] Python Idle Crashing
I recently created a program that searches through a computer's drive to make a list of all the files in that drive. However, the drive I am attempting to parse through is extremely large and when I run my program, it runs for about 5 or 10 minutes then proceeds to not respond and not finish parsing through the entire drive. Is there a way around this or does the drive just contain too many files?___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Idle Crashing
I don't think running this on Idle is the best. Did you try to run your program in the command line? ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Issue with string method: str(variable ** n)
Hej, I wrote a tiny little program which I was hoping would take a number as input, square and print it: square = input (Enter a number. ) print (str(square) + squared is + str(square ** 2)) It seems I can't work with variables within the str() string method, and I was wondering if anyone can help? PS. I am using Python 3.3.0 Thank you in advance! Rafael ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Issue with string method: str(variable ** n)
On 05/16/2013 02:58 PM, Rafael Knuth wrote: Hej, I wrote a tiny little program which I was hoping would take a number as input, square and print it: square = input (Enter a number. ) print (str(square) + squared is + str(square ** 2)) It seems I can't work with variables within the str() string method, and I was wondering if anyone can help? PS. I am using Python 3.3.0 Thank you in advance! Rafael In Python 3.3.0, input returns a string. So square is a string. There isn't any meaning to squaring a string. You probably want either: square = float(input(Enter a number.) or square = int(input(Enter a number.) Suggestion for next time - include the error traceback. -- DaveA ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Issue with string method: str(variable ** n)
On Thu, May 16, 2013 at 1:58 PM, Rafael Knuth rafael.kn...@gmail.com wrote:
Hej,
Hi Rafael,
I wrote a tiny little program which I was hoping would take a number as
input, square and print it:
square = input (Enter a number. )
print (str(square) + squared is + str(square ** 2))
It seems I can't work with variables within the str() string method, and I
was wondering if anyone can help?
PS. I am using Python 3.3.0
In the future, it's always very helpful to post any tracebacks you
get, everything from Traceback (most recent call last): to the last
thing printed.
In this case, it seems that your problem is that in Python3, input()
returns the input as a string. Python2's input() function would
actually evaluate the input, which was incredibly insecure.
You can fix your program by calling int() on square at the end of your
print call. If I were writing this myself, I would do this, though:
number = int(input(Enter a number. ))
print({} squared is {}.format(number, number**2))
You might find the tutorial page on Input and Output[1] instructive,
particularly about the format method I used above.
Hope this helps,
Zach
[1] http://docs.python.org/3/tutorial/inputoutput.html
Thank you in advance!
Rafael
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Re: [Tutor] Python Idle Crashing
On 05/16/2013 02:17 PM, kyle seebohm wrote: I recently created a program that searches through a computer's drive to make a list of all the files in that drive. However, the drive I am attempting to parse through is extremely large and when I run my program, it runs for about 5 or 10 minutes then proceeds to not respond and not finish parsing through the entire drive. Is there a way around this or does the drive just contain too many files? Not clear why you would think that Idle had anything to do with it. It didn't crash, it hung, or maybe is just taking a very long time, or maybe it has an infinite loop in the code, or you're thrashing after filling up memory? Still, if you think it was IDLE, it's simple to just run the program without IDLE. What's your environment, besides extremely large drive? What OS, what version of Python? And what's your code look like? What does top say? Is the disk light still blinking? Do you have any symbolic links and does your code handle them correctly? -- DaveA ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Issue with string method: str(variable ** n)
Thank you - that makes perfectly sense. Also, I am new to the list, and I appreciate your suggestion. I will include error tracebacks in the future. All the best, Rafael On Thu, May 16, 2013 at 9:14 PM, Dave Angel da...@davea.name wrote: On 05/16/2013 02:58 PM, Rafael Knuth wrote: Hej, I wrote a tiny little program which I was hoping would take a number as input, square and print it: square = input (Enter a number. ) print (str(square) + squared is + str(square ** 2)) It seems I can't work with variables within the str() string method, and I was wondering if anyone can help? PS. I am using Python 3.3.0 Thank you in advance! Rafael In Python 3.3.0, input returns a string. So square is a string. There isn't any meaning to squaring a string. You probably want either: square = float(input(Enter a number.) or square = int(input(Enter a number.) Suggestion for next time - include the error traceback. -- DaveA __**_ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/**mailman/listinfo/tutorhttp://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Word Jumble - Chpt4 (Explanation)
Hi guys!
This is my first post so go gentle. I'm just getting into Python programming
and am having an issue understanding the Word Jumble Game.
import random
WORDS = ('python','jumble','easy','difficult','lower','high')word =
random.choice(WORDS)correct = wordjumble =
while word:position = random.randrange(len(word))jumble +=
word[position]word = word[:position] + word[(position+1):]
==
I cannot understand what it is trying to do in the while loop.If the word was
python and position lets say was 3 then jumble would = python(3). I cannot
understand what the next line does! Please help!
Thanks in advance!
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Re: [Tutor] Python Idle Crashing
Dave Angel wrote: On 05/16/2013 02:17 PM, kyle seebohm wrote: I recently created a program that searches through a computer's drive to make a list of all the files in that drive. However, the drive I am attempting to parse through is extremely large and when I run my program, it runs for about 5 or 10 minutes then proceeds to not respond and not finish parsing through the entire drive. Is there a way around this or does the drive just contain too many files? Not clear why you would think that Idle had anything to do with it. It didn't crash, it hung, or maybe is just taking a very long time, or maybe it has an infinite loop in the code, or you're thrashing after filling up memory? Still, if you think it was IDLE, it's simple to just run the program without IDLE. What's your environment, besides extremely large drive? What OS, what version of Python? And what's your code look like? What does top say? Is the disk light still blinking? Do you have any symbolic links and does your code handle them correctly? Also, what version of Python? What OS? What file system? Do you have any logging (actual logs or even just print statements to console)? ~Ramit This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Word Jumble - Chpt4 (Explanation)
Arvind Virk wrote:
Hi guys!
This is my first post so go gentle. I'm just getting into Python programming
and am having an issue
understanding the Word Jumble Game.
import random
WORDS = ('python','jumble','easy','difficult','lower','high')
word = random.choice(WORDS)
correct = word
jumble =
while word:
position = random.randrange(len(word))
jumble += word[position]
word = word[:position] + word[(position+1):]
==
I cannot understand what it is trying to do in the while loop.
If the word was python and position lets say was 3 then jumble would =
python(3). I cannot understand
what the next line does! Please help!
Thanks in advance!
The best way to understand a program is to watch what it is
doing and follow through the code. This is called debugging.
Simple programs like this you might be able to debug in your
mind but in a real program chances are you will need a debugger
or some other method. A very common way to debug is to put in
print statements so you can follow the actions of data. Look
at the code I put below and the output. Can you follow?
word = 'python'
jumble =
while word:
... position = random.randrange(len(word))
... print 'position {0} | jumble {1}'.format( position, jumble )
... tempchar = word[position]
... jumble += tempchar
... word = word[:position] + word[(position+1):]
... print 'After jumble {0} | word {1} | tempchar {2}'.format( jumble,
word, tempchar )
...
position 5 | jumble
After jumble n | word pytho | tempchar n
position 2 | jumble n
After jumble nt | word pyho | tempchar t
position 3 | jumble nt
After jumble nto | word pyh | tempchar o
position 1 | jumble nto
After jumble ntoy | word ph | tempchar y
position 0 | jumble ntoy
After jumble ntoyp | word h | tempchar p
position 0 | jumble ntoyp
After jumble ntoyph | word | tempchar h
So based on the above output I would say that it is removing a
random character from word and adding it to jumble to create a
jumbled version of the word. Of course, the std library
can do it for you better. :) I leave the exercise of actually
understanding the character manipulation to you as a learning
exercise, but if you get stuck feel free to post back.
t = list(python)
random.shuffle(t)
''.join(t)
'optynh'
~Ramit
This email is confidential and subject to important disclaimers and
conditions including on offers for the purchase or sale of
securities, accuracy and completeness of information, viruses,
confidentiality, legal privilege, and legal entity disclaimers,
available at http://www.jpmorgan.com/pages/disclosures/email.
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Re: [Tutor] Can't install latest PIL
Make sure you have the correct architecture. The builds from PythonWare are 32-bit. Christoph Gohlke has 64-bit builds here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil == Okay, I installed the 64 bit for Py 2.7, it installed, I see PIL directory in Site-Packages. (Actually, it's the Pillow fork, but it still seems to be named PIL) I tried import image from pil and got the following error: SyntaxError invalid syntax (python_init.py, line 1) I don't see where that prog is, so it's an install somewhere and I don't want to mess with it anyway. Oh well, be nice to get back to learning Python after wrestling with editors, installs, and Windows ;') Jim ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pygraphics crashed
On Thu, May 16, 2013 at 2:06 AM, Jim Mooney cybervigila...@gmail.com wrote: How do I uninstall modules? I installed Pygraphics, which worked fine, along with some other mods, like numpy, but when I installed 64 bit py 2.7 I get the message The _imaging C module is not installed when running a prog that worked fine before. I think I have a higher dot-version - Py 2.7.4 as opposed to 2.7.3 - what's the easiest way to fix this? Will uninstalling and reinstalling the modules do anything or do I have to revert to an older Py (I'm on Win 7) On windows it's generally easiest to use a 32 bit Python. If you uninstall python, and install a 32 bit version and the 32 bit modules and so on, it should work. By the way, do you mind if I ask why you're using PyGraphics? It's only meant to be used for education (and even there, AFAIK the only users are the University of Toronto (and even there, I think they stopped using it because they switched to Python 3 for Coursera and didn't care enough to upgrade PyGraphics (I am mad about this))). -- Devin ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pygraphics crashed
By the way, do you mind if I ask why you're using PyGraphics? It's only meant to be used for education (and even there, AFAIK the only users are the University of Toronto (and even there, I think they stopped using it because they switched to Python 3 for Coursera and didn't care enough to upgrade PyGraphics (I am mad about this))). Yeah, I'm tired of fighting 64 bit windows. I'm going to uninstall everything and use 32 bit I was reading some advice to use 64 bit for speed but I'm only learning - I don't need to keep wrestling with this crap just get top speed for twenty line programs ;') PyGraphics was an import in a program right at the front of a book I'm using. Worked fine for displaying jpgs very easily, before I started fooling with 64 bit. Let me see, the book is called: Practical Progamming - an introduction to computer science using Python by Jennifer Campbell, et al. It's not my main book - it's just for doing something more active while I slug through Guttag's MIT open courseware on Python. Guttag covers all the bases, but in the meantime I want to see pretty pictures and see what Python can do ;') Right now I'm using both Py 2.7 and Py 3.3 since I want to learn 3.3 but half the good libs are still in 2.7. Actually, neither the book or Guttag is pure Python, but just using Python to teach computer science. I'm a retired webmaster and hacked away just enough at javascript, jquery, and php to get something done on a site, but I figured I'd actually learn this from the ground up now that I have time and don't have to be hustling a site all the time, and just grab some jquery and get it done. I may have to look at a dedicated Python book for detail, since the book and course I have admit they just scant Python to get on with computer science. Jim ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Can't install latest PIL
You may want to consider pillow. Oil hasn't been maintained in some time. On May 16, 2013 6:12 PM, Jim Mooney cybervigila...@gmail.com wrote: Make sure you have the correct architecture. The builds from PythonWare are 32-bit. Christoph Gohlke has 64-bit builds here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil == Okay, I installed the 64 bit for Py 2.7, it installed, I see PIL directory in Site-Packages. (Actually, it's the Pillow fork, but it still seems to be named PIL) I tried import image from pil and got the following error: SyntaxError invalid syntax (python_init.py, line 1) I don't see where that prog is, so it's an install somewhere and I don't want to mess with it anyway. Oh well, be nice to get back to learning Python after wrestling with editors, installs, and Windows ;') Jim ___ 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] Word Jumble - Chpt4 (Explanation)
On Thu, May 16, 2013 at 1:03 PM, Arvind Virk arvind.s.v...@hotmail.co.ukwrote:
import random
WORDS = ('python','jumble','easy','difficult','lower','high')
word = random.choice(WORDS)
correct = word
jumble =
while word:
position = random.randrange(len(word))
jumble += word[position]
word = word[:position] + word[(position+1):]
==
I cannot understand what it is trying to do in the while loop.
If the word was python and position lets say was 3 then jumble would =
python(3). I cannot understand what the next line does! Please help!
First, about while word - A 'while' loop runs as long as its condition
evaluates to True; an explanation of what evaluates to True can be found
here: http://docs.python.org/2/library/stdtypes.html, but for our purposes
it boils down to as long as 'word' is not an empty string, keep going.
Second, what it's doing inside that while loop - it's picking a random
letter out of 'word', adding it to the end of 'jumble', and then removing
it from 'word'. It's doing it by means of slices: it takes all of 'word'
up to (but not including) 'position', then adds all of 'word' starting one
character AFTER 'position'. 'word' is now one character shorter than it
started out; keep this up long enough and you'll be left with an empty
string, which evaluates to False - and the 'while' loop terminates.
This is definitely not the most efficient way to do things, but it's a
pretty good introduction to slices (which are awesome, by the way.)
There's a very good introduction to Python's slice notation about halfway
down this page: http://docs.python.org/2/tutorial/introduction.html, in
section 3.1.2 Strings. Just remember that lists and indices start with
0, not 1, and you'll be on your way.
Finally, as Ramit mentioned, print statements (or print() functions, if
you're on Python 3) are your friend! Don't be afraid or ashamed to put in
lots of them whenever you're not sure what your code is doing! (Just
remember to take out the unnecessary one when you're done.)
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Re: [Tutor] Can't install latest PIL
On 16 May 2013 16:11, James Reynolds eire1...@gmail.com wrote: You may want to consider pillow. Oil hasn't been maintained in some time. Actually, I installed Pillow. But then I deleted everything and started over with 32 bit. I got greedy figuring I'd get the fastest Py with 64 bit, but there are too many kludges involved and I'm tired of it so heave-ho on all the 64 bit. Back to 32 bit. All modules and showing pretty pictures with Py work again. It doesn't pay to be greedy (except with regular expressions, of course) Jim ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Idle Crashing
On 16/05/13 19:17, kyle seebohm wrote: I recently created a program that searches through a computer's drive to make a list of all the files in that drive. However, the drive I am attempting to parse through is extremely large and when I run my program, it runs for about 5 or 10 minutes then proceeds to not respond and not finish parsing through the entire drive. First, don't run programs on real data using IDLE. IDLE is for developing programs not running them. Second, 5-10 minutes is not that long, how do you know it had stopped? Do you have progress markers printed that stopped printing? If not I suggest you add them - just a dot after each file (or each 10, 100, etc files) will do. Have you checked Task Manager (assuming windows, top on *nix) to see if the process is still using CPU? -- 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] Word Jumble - Chpt4 (Explanation)
On 16/05/13 21:03, Arvind Virk wrote:
This is my first post so go gentle. I'm just getting into Python
programming and am having an issue understanding the Word Jumble Game.
Welcome.
First thing is we have no idea what Chapter 4 refers to so please tell
us the source you are working from (alsoi OS and Python version helps too)
Secondly tell us what happens when you run it and what you expected and
what you got and why you are surprised/puzzled.
import random
WORDS = ('python','jumble','easy','difficult','lower','high')
word = random.choice(WORDS)
correct = word
FWIW I don't understand the above line. It does nothing useful and
correct is not used again...
jumble =
while word:
position = random.randrange(len(word))
jumble += word[position]
word = word[:position] + word[(position+1):]
Also since there are no print statements it all seems a tad pointless,
are you sure that's the whole program?
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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Re: [Tutor] Can't install latest PIL
On Thu, May 16, 2013 at 6:12 PM, Jim Mooney cybervigila...@gmail.com wrote: I tried import image from pil and got the following error: SyntaxError invalid syntax (python_init.py, line 1) If you see a syntax error, that means your code could not be compiled. Python's parser doesn't grok import image from pil. In natural language we have the freedom to swap the order of clauses, but programming languages are generally more rigid. The correct order is from pil import image -- but actually it has to be from PIL import Image. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pygraphics crashed
On Thu, May 16, 2013 at 6:15 PM, Jim Mooney cybervigila...@gmail.com wrote: How do I install PIL with easy-install? I used that once but forget how. I seem to recall reading it installs a version that is Py native and doesn't choke on your OS. Or did I read that wrong? I recommend pip instead of easy_install because it allows you to easily uninstall. First install distribute: http://python-distribute.org/distribute_setup.py Next install pip: https://raw.github.com/pypa/pip/master/contrib/get-pip.py Quickstart guide: http://www.pip-installer.org/en/1.3.1/quickstart.html On Windows, pip and easy_install are a bit limited. I gather that the new Wheel package format (.whl) and compatibility tags should solve the problem (see PEPs 427 and 425). The development version of pip supports Wheel. As is, pip works just fine for installing pure Python packages from source. easy_install also supports binary eggs, but I dislike not having an easy way to uninstall. At least an exe/msi installer lets you uninstall using the Windows control panel. If you have a supported C compiler configured, you can use pip to install packages that have self-contained C extensions (i.e. no dependencies -- such as psutil or cython). Visual Studio [Express] is recommended (2008 for 2.6-3.2; 2010 for 3.3), especially if C++ is used, but MinGW-w64 can be made to work. The big problem here is Windows lacks dependency management for installing libraries and development files (headers and import libs) to known system locations. So compiling an extension module that has dependencies needs to be configured manually. PIL has a lot of dependencies: libjpeg, libtiff, zlib, freetype2, littleCMS, libwebp, and Tcl/Tk. Building it is a moderately challenging process on Windows -- not really suited for a beginner. Building NumPy/SciPy would be even more work since they need a Fortran compiler, too. Fortunately for Windows users, Christoph Gohlke has already done all the hard work for dozens of the most popular packages. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
