To whom this may concern:
I am struggling on two questions:
Problem 2.
Suppose you are given a function leave(minute) which returns the number of
students
that leave an exam during its mth minute. Write a function already_left(t) that
returns the number of students that left at or before minute
Thank you Alan, Dave and Cameron (and folks managing this email group)!
Your replies were very helpful.
Regards
ni
On Wed, Apr 9, 2014 at 4:25 AM, Cameron Simpson c...@zip.com.au wrote:
On 08Apr2014 22:58, Ni hung niih...@gmail.com wrote:
I am learning programming using python. I think of
Hi all,
I am trying to create a script that will go through the
/var/log/secure file on a Linux system and provide desktop
notifications for failed login attempts.
Here is the code - http://pastebin.com/MXP8Yd91
And here's notification.py - http://pastebin.com/BhsSTP6H
I am facing issue in the
On 10/04/2014 02:20, uga...@talktalk.net wrote:
Please write in plain English if you want to be understood.
-Original Message-
From: Dave Angel da...@davea.name
To: tutor@python.org
Sent: Thu, 10 Apr 2014 2:00
Subject: Re: [Tutor] masking library files
uga...@talktalk.net Wrote in
Conner Crowe wrote:
To whom this may concern:
I am struggling on two questions:
Problem 2.
Suppose you are given a function leave(minute) which returns the number of
students that leave an exam during its mth minute. Write a function
already_left(t) that returns the number of students
Dharmit Shah wrote:
I am trying to create a script that will go through the
/var/log/secure file on a Linux system and provide desktop
notifications for failed login attempts.
Here is the code - http://pastebin.com/MXP8Yd91
And here's notification.py - http://pastebin.com/BhsSTP6H
I am
-Original Message-
From: Mark Lawrence breamore...@yahoo.co.uk
To: tutor@python.org
Sent: Thu, 10 Apr 2014 9:36
Subject: Re: [Tutor] masking library files
On 10/04/2014 02:20, uga...@talktalk.net wrote:
Please write in plain English if you want to be understood.
-Original Message-
From: uga...@talktalk.net
To: tutor@python.org
Sent: Thu, 10 Apr 2014 10:17
Subject: Re: [Tutor] masking library files
-Original Message-
From: Mark Lawrence breamore...@yahoo.co.uk
To: tutor@python.org
Sent: Thu, 10 Apr 2014 9:36
Subject: Re: [Tutor]
On 10/04/14 10:30, uga...@talktalk.net wrote:
On 10/04/2014 02:20, uga...@talktalk.net wrote:
Please write in plain English if you want to be understood.
-Original Message-
From: Dave Angel da...@davea.name
To: tutor@python.org
A message left in invisible ink. Please post in
On 10/04/14 03:04, Conner Crowe wrote:
*Problem 2.*
# Here's one possible stand-in:
def leave(minute):
if minute 0:
return minute
return 0
So far for this i have:
*def* *leave*(minute):
*if* minute 0:
*return* minute
*elif* minute=0:
*return* 0
Ignoring the
But I must remember to cc tutor@python.org when replying to you.
-Original Message-
From: uga...@talktalk.net
To: alan.ga...@btinternet.com
Sent: Thu, 10 Apr 2014 13:15
Subject: Re: [Tutor] masking library files
It is off, and I don't appear have an option to turn it on in
Hi Peter,
On Thu, Apr 10, 2014 at 2:30 PM, Peter Otten __pete...@web.de wrote:
Dharmit Shah wrote:
I am trying to create a script that will go through the
/var/log/secure file on a Linux system and provide desktop
notifications for failed login attempts.
Here is the code -
Hi,
I have a program that is reading near 60 elements from a file.
For each element it performs 200 times a particular mathematical operation
(a numerical interpolation of a function).
Now these process takes near 8 hours.
Creating a C function and calling it from the code could improve the
Hi there Gabriele,
: I have a program that is reading near 60 elements from a
: file. For each element it performs 200 times a particular
: mathematical operation (a numerical interpolation of a function).
: Now these process takes near 8 hours.
Sounds fun! Here are some thoughts
On 10/04/14 16:58, Gabriele Brambilla wrote:
For each element it performs 200 times a particular mathematical
operation (a numerical interpolation of a function).
Now these process takes near 8 hours.
The first thing to do in such cases is check that the time
is going where you think it is.
Hi,
2014-04-10 13:05 GMT-04:00 Martin A. Brown mar...@linux-ip.net:
Hi there Gabriele,
: I have a program that is reading near 60 elements from a
: file. For each element it performs 200 times a particular
: mathematical operation (a numerical interpolation of a function).
: Now
I do have a Reply All command, but as in this case, there is no recipient other
than myself to be included. Also, hitting the Reply All command seems to
generate an alert warning message, when recipients include a mail-list address,
and some mail list replies go to the mail-list as recipient
We should get back to the topic. Did you have a Python question?
Meta-discussion on mailing list etiquette must not dominate discussion on
helping people learning to program with Python.
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On Wed, Apr 9, 2014 at 7:17 AM, uga...@talktalk.net wrote:
Is it common for files saved to a working directory to 'mask' library files
located in the Python framework?
Hi ugajin,
To come back to your original question: yes, unfortunately this
happens. I think it's a flaw in the language.
On 10/04/2014 18:29, Gabriele Brambilla wrote:
(I'm sorry but I don't know very well what profiling is)
Take a look at these for some tips
http://www.huyng.com/posts/python-performance-analysis/ and
https://wiki.python.org/moin/PythonSpeed/PerformanceTips
--
My fellow Pythonistas, ask
On 10/04/14 19:09, uga...@talktalk.net wrote:
I do have a Reply All command, but as in this case, there is no
recipient other than myself to be included.
That's because I (deliberately) replied only to you. :-)
commandseems to generate an alert warning message, when recipients
include a
Apologies for the multiple emails. I'm still paging in from memory
how Python imports are working these days. :P
If you have the freedom to do so, you may also turn on the absolute
import system:
https://docs.python.org/2/whatsnew/2.5.html#pep-328-absolute-and-relative-imports
so that
Hi Gabriele,
Have you profiled your program? Please look at:
https://docs.python.org/2/library/profile.html
If you can, avoid guessing what is causing performance to drop.
Rather, use the tools in the profiling libraries to perform
measurements.
It may be that your program is taking a
Caveat: I began this before there were any other responses. So this may
be overkill - but I ike to be thorough.
On 4/9/2014 12:49 PM, Jared Nielsen wrote:
Hi Pythons,
Could someone explain the difference between expressions and statements?
I know that expressions are statements that produce a
I'm trying to profile it adding this code:
import cProfile
import re
import pstats
cProfile.run('re.compile(foo|bar)', 'restats')
p = pstats.Stats('restats')
p.strip_dirs().sort_stats('name')
p.sort_stats('time').print_stats(10)
but where I have to add this in my code?
because I obtain
Thu
Hi Gabriele,
I should probably have pointed you to:
https://docs.python.org/2/library/profile.html#instant-user-s-manual
instead.
Here is an example that uses the cProfile module. Let's say that I'm
trying to pinpoint where something is going slow in some_program():
uga...@talktalk.net Wrote in message:
Please write in plain English if you want to be understood
Like the op, you post in html. There are a bunch of things that
can wrong when you do that, so you should use text mail instead.
In the case of the op, he apparently changed the text color to
Hi,
I get this result:
Thu Apr 10 17:35:53 2014restats
21071736 function calls in 199.883 seconds
Ordered by: internal time
List reduced from 188 to 10 due to restriction 10
ncalls tottime percall cumtime percall filename:lineno(function)
1 149.479 149.479
Thanks for the thorough answer, Bob. I now understand the difference.
On Apr 10, 2014 2:11 PM, bob gailer bgai...@gmail.com wrote:
Caveat: I began this before there were any other responses. So this may be
overkill - but I ike to be thorough.
On 4/9/2014 12:49 PM, Jared Nielsen wrote:
Hi
My task is :A food vending machine accepts 10p, 20p, 50p and £1 coins. One or
more coins are inserted and the current credit is calculated and displayed. A
product is selected from those available. The system checks to see if there is
enough credit to purchase the product chosen. If there is
Gabriele,
21071736 function calls in 199.883 seconds
The 21 million function calls isn't really a surprise to me, given
18 million calls to file.write(). Given that the majority of the
time is still spent in skymaps5.py, I think you'll need to
instrument that a bit more to figure
ncalls tottime percall cumtime percall filename:lineno(function)
1 149.479 149.479 199.851 199.851 skymaps5.py:16(mymain)
18101000 28.6820.000 28.6820.000 {method 'write' of 'file'
objects}
330445.4700.0006.4440.000
but main is the program that contains everything.
I used the profile in this way:
import cProfile
import pstats
def mymain():
#all the code
#end of main indentation
cProfile.run('mymain()', 'restats', 'time')
p = pstats.Stats('restats')
p.strip_dirs().sort_stats('name')
sure.
def mymain():
def LEstep(n):
Emin=10**6
Emax=5*(10**10)
Lemin=log10(Emin)
Lemax=log10(Emax)
stepE=(Lemax-Lemin)/n
return (stepE, n, Lemin, Lemax)
if __name__ ==
On 4/10/2014 5:48 PM, Jared Nielsen wrote:
Thanks for the thorough answer, Bob. I now understand the difference.
Thanks for the ACK. It helps me remember I have something to contribute.
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On 10/04/14 23:26, Saba Usmani wrote:
My task is :
A food vending machine accepts 10p, 20p, 50p and £1 coins
*/I have designed the following code, but would like to know how to make
it more efficient without making it too complex as I am a beginner
Have you covered functions yet?
If so you
Gabriele,
but main is the program that contains everything.
And, that is precisely the point of profiling the thing that
contains 'everything'. Because the bottleneck is almost always
somewher inside of 'everything'. But, you have to keep digging
until you find it.
I saw that you
On Thu, Apr 10, 2014 at 11:58:30AM -0400, Gabriele Brambilla wrote:
Hi,
I have a program that is reading near 60 elements from a file.
For each element it performs 200 times a particular mathematical operation
(a numerical interpolation of a function).
Now these process takes near 8
On Fri, Apr 11, 2014 at 10:59:05AM +1000, Steven D'Aprano wrote:
It might help if you show us your code.
Oops, never mind, I see you have done so.
--
Steven
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Ok, good.
There's a few things you'll want to fix in your mymain() in order for
the profiler to work more effectively in pinpointing issues.
1. Move functionality outside of if __name__ == '__main__':
At the moment, you've put the entire functionality of your program in
the body of that if
Comment: You are looping over your sliced eel five times. Do you
need to? I like eel salad a great deal, as well, but, how about:
for k in eel:
MYMAP1[i, j, k] = MYMAP1[i, j, k] + myinternet[oo]
MYMAP2[i, j, k] = MYMAP2[i, j, k] + myinternet[oo]
Hi Saba,
Do you see any similarities between each of the snack choices? Do you
see any differences?
(Did you happen to use copy-and-paste at any time when you wrote the program?)
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Hi Danny,
I followed your suggestion.
Tomorrow morning I will run this new version of the code.
Now using a sample of 81 elements (instead of 60) the profile returns:
Thu Apr 10 23:25:59 2014restats
18101188 function calls in 1218.626 seconds
Ordered by: internal time
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