it, I'd have to scan *all* lines to understand
what a single value is being assigned.
There is *no way* you can argue that code is clearer than this:
# General header fields
Cache_Control = None
Connection = None
Date= None
Prag
ion of
the get method of dictionaries.
Also look at the
key in dict
syntax on the same page.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
choices exist.) Once you use an
existing package to read your files into an internal tree structure
representation, it should be a relatively easy job to traverse the tree
to emit the tags and text you want.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
and you should not invoke the name mangling implied by the double
underscore.
If you *are* trying to use the name mangling, then you still don't need
the super.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
ger and None
differently, but on a specific implementation, the result will not change.
Python 3 will raise an exception on such comparisons.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
e/gherron'
You can use getattr with objects, classes, modules, and probably more.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
order it:
x = list ...
x.reverse() # reorders, but returns nothing
... now use x ...
You might look at the builtin reversed(list):
http://www.python.org/doc/faq/programming/#how-do-i-iterate-over-a-sequence-in-reverse-order
Gary Herron
--
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:
import math
Then use: math.pi, math.sqrt, math.sin, math.cos, ...
Method 2:
from math import pi, sqrt
Then use pi, and sqrt.
But other module attributes (like sin, and cos) are not accessible.
Method 3:
from math import *
Then use pi, sqrt, cos, sin, and anything else defined by the modu
SL wrote:
How can I compute with the integer values of characters in python?
Like
'a' + 1 equals 'b' etc
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You can get an integer value from a character with the ord() function.
Gary Herron
--
http://mail.python.org/mai
Good Z wrote:
Hello,
I am having problem in using is. Here is what i am doing.
Short answer: Use == for equality.Don't use "is". Ever!
(Especially if you are a newbie.)
Longer answer: In a dozen years of programming Python, the only time I
use "is" is when testing for something like
ister,
increment the register
write the value into i.
If a thread is interrupted anywhere within that sequence, and another
thread access i, you have a conflict. (And indeed, hardware interrupts
can occur between any two instructions.)
Gary Herron
--
http://mail.python.org/mailman/listinfo/p
you are trying to do here, and we'll
wee if we can help.
Gary Herron
P.S. Having a class attribute AND an instance attribute, both named
"value" is going to cause trouble.
#
But the last line does not work.
I would like to do a call like:
dummy = Dummy(thisV
hreads since each thread has it's own set
of register values.
Gary Herron
'as
--
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--
http://mail.python.org/mailman/listinfo/python-list
Carl Banks wrote:
On May 3, 7:44 pm, Gary Herron <[EMAIL PROTECTED]> wrote:
Alexander Schmolck wrote:
AlFire <[EMAIL PROTECTED]> writes:
The threading module already has a function to return the number of Thread
objects currently alive.
I have threads wi
Alexander Schmolck wrote:
Gary Herron <[EMAIL PROTECTED]> writes:
But... It's not!
A simple test shows that. I've attached a tiny test program that shows this
extremely clearly. Please run it and watch it fail.
In [7]: run ~/tmp/t.py
final count: 200
sh
Carl Banks wrote:
On May 4, 12:03 pm, Gary Herron <[EMAIL PROTECTED]> wrote:
Alexander Schmolck wrote:
Gary Herron <[EMAIL PROTECTED]> writes:
But... It's not!
A simple test shows that. I've attached a tiny test program that shows this
extremel
ven't given us much to work with -- tell us what exception you
get.(Or just look at it carefully yourself.) Whatever the problem
is, I don't believe it has anything to do with the spaces.
Gary Herron
>>> open('./my\\ test/test.txt')
Exception
but yet...
rposely created without that (mis)feature because it's so
unclear, and easy to abuse. Most of us in the community support that
point of view and would fight the introduction of such a feature into
Python.
Gary Herron
--
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k in range(8):
... b = [i+j for i in ['0','1'] for j in b]
...
>>> len(b)
256
>>> b[63]
'0011'
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
face.
(Truly, when I found Python, programming became fun again.)
Gary Herron
Tnx,
Raxit
www.mykavita.com
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--
http://mail.python.org/mailman/listinfo/python-list
list, I wonder how this can be useful. However, this *does*
do what you asked.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
In this case, the problem was
trivially easy to spot, but you'll get past these trivial problems
soon. Then you'll be more likely to find volunteers who will spend time
to help *if* you spend the time to provide useful information.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
)
Do you see the difference?
Develop the skill of reading the error messages *very* carefully. Your error says there is no file
named "fileName", and if you think about what's on your disk, I'll bet you won't find a
file whose name is "fileName".
Gary
aditya shukla wrote:
Hello guys
I am trying to search a file say xyz.txt
after searching i get the location of the file in
search_file (containing abspath) ,eg search_file="c:\\abc\\xyz.txt"
now how should i open this file
i can use file=open("c:\\abc\\xyz.txt","rb") but i have to use search
cnb wrote:
if i do
try:
something
except TypeError, IndexError:
pass
only the first error will get caught. I dont want to use Exception and
catch all errors, but just 2. how can i do that?
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what you're doing is assigning the value
thing for many uses, including callbacks.
Hoping I understood what you wanted correctly,
Gary Herron
... but obviously, the Client class, when it calls the callback,
doesn't pass a reference to the "self" object. How do I do this?
-- Chris
--
http://mail.python.org/mail
een able to find? Is there any reason
to use sys.exit() given exit()'s availability?
If there is an advantage to sys.exit() over exit(), then does sys.exit() have
any advantage over "raise SystemExit, 'some error message'" in cases where a
module has no other reason to
t.getSheets().getByIndex(i)
for i in range(component.getSheets().getCount())]
return sheets
Hope this helps,
Gary Herro
--
http://mail.python.org/mailman/listinfo/python-list
someone have to write a DLL in C/C++ that calls the function first?
Thanks!
Siegfried
See the ctypes module for a method of calling any C callable function in
and DLL.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
srinivasan srinivas wrote:
I want to do something like below:
1. first, second, third, *rest = foo
Python 3.0 has exactly this feature. No current Python 2.x version has it.
Gary Herron
2. for (a,b,c,*rest) in list_of_lists:
Please suggest.
Thanks,
Srini
Bring your gang
answer as to what happens in
python?
Thanks
No code is duplicated. 50 "objects" are created. Each object has its own
copy of the data attributes, and a reference to the (one and only) class
object where the method attributes are located.
That's a short answer. Perhaps too shor
indow's service. I'm just now looking
into how to register and start a service, and how to stop and remove it
later. Google finds lots of information on this -- perhaps I'll post my
result when I've pulled it all together.
Gary Herron
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= 10
while i >=0:
# do whatever
i -= 1
Gary Herron
--
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process wrote:
In erlang you can cons like this: [1|2]. i tried this in python and it
didnt raise an error but i dont know what the result do
In Python | is the logical bitwise-OR operator. Look at the binary
representation of the numbers to understand it.
Gary Herron
[1|2
A. Joseph wrote:
I need an ebook or tutorial that teach matrix programming.
Perhaps you should start here:
http://www.catb.org/~esr/faqs/smart-questions.html#intro
Gary Herron
--
http://mail.python.org/mailman
you want!
Gary Herron
On 9/23/08, *Gary Herron* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
A. Joseph wrote:
I need an ebook or tutorial that teach matrix programming.
Perhaps you should start here:
http://www.catb.org/~esr/faqs/smart-question
e rxvt window implements all the cut/past mouse actions you're used to
from Linux/Unix terminal windows.
Together, these make windows feel almost civilized.
Happy Googling for them,
Gary Herron
--
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def DontInheritMe(self, ...):
raise NotImplementedError // Or some such
Gary Herron
--
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Gary Herron wrote:
> process wrote:
>
>> Let's say I have a class X which has 10 methods.
>>
>> I want class Y to inherit 5 of them.
>>
>> Can I do that? Can I do something along the lines of super(Y, exclude
>> method 3 4 7 9 10) ?
>>
&g
ImportError:
MyBase = object
else:
MyBase = foo.bar.Baz
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
The comparison function used
in the search is (potentially) slow, but the search is O(log n) on the
number of bits rather than O(n), so its worth a test.
If you run timing test, let us know the results.
Gary Herron
> I implemented this the following way:
>
> def get_highest_bit_num(
nd various operations in popen2), with os.system
being the easiest and perhaps sufficient for your need.
However, if you are running Python 2.4, the I'd suggest the "subprocess"
module, and in particular its convenience function "call".
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
te. The
solution would be to call flush on the output file after each write (or
perhaps just wait more patiently).
If the output is voluminous, then it's probably something else ... but I
don't know what. Perhpas you could post your code.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
>>
>
>Or maybe:
>
>for i in sequence:
> mylist.append(print(i))
>
>
>
No no, please NO! You *know* that someday you'll want the return value
without actually printing the text.
So let's don't overload a single function with two operations. Let
"print" print, and propose a separate function (named "format" --yuck--
or some such) that returns the same text as a string.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
ally, you can build the list with a list comprehension construct
l = [str(i) for i in xrange(10)]
print " ".join(l)
You could also combine the above two lines into one -- that would be shorter,
but probably not clearer.
Cheers,
Gary Herron
>Every help is appreciate.
>
>
>
--
http://mail.python.org/mailman/listinfo/python-list
;
If you want the cropped rectangle to go from 100 to 200 in x and 300 to
400 in y, then those four values need to be placed in a tuple in the
specified order:
box=(100,300,200,400)
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
red pixels from the top or bottom?
>>
>>
>
>I came up with this, is it correct:
>
>(a,b) (c,b)
> -
> | |
> | |
> -
>(a,d) (c,d)
>
>
>So the tuple w
thon in "32-bit compatibility mode"
and running it alongside the pre-installed Python that comes with
Solaris 10.
Any input or tips would be greatly appreciated.
Thanks
Gary
--
Gary Robinson
VP/Innovation
Emergent Music, LLC
[EMAIL PROTECTED]
207-942-3463
Company: http://www.goombah
ows, you can quickly figure out if it's "fast enough".
The more speed I have, the better output I'll be able to get. This
application is a case where there is no "fast enough". The more speed,
the better, within financial constraints.
Gary
--
Gary Robinson
VP/Innovat
x27;s the syntax for
this operation 2) what version does it start with?
1) Syntax is just as you have it.
(Not including the period you have at the end.)
2) Python 3.0
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
ingle
word "struct", let's start with this:
Python has a module named struct:
http://docs.python.org/library/struct.html#module-struct
Is that what you wanted?
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
important, you could use a set -- where a
second insertion will have no effect.
>>> s = set()
>>> s.add(1)
>>> s.add(2)
>>> s.add(1)
>>> print s
set([1, 2])
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
mattia wrote:
Il Sun, 13 Dec 2009 16:37:20 +, mattia ha scritto:
How can I insert non-duplicate data in a list? I mean, is there a
particular option in the creation of a list that permit me not to use
something like:
def append_unique(l, val):
if val not in l:
l.append(val)
Dotan Barak wrote:
Hi.
I'm trying to evaluate a string and getting a NameError
(it is expected, since the variable my_number wasn't provided in the
"locals" dictionary).
<--snip start-->
>>> eval("my_number < 10", {"__builtins__":None}, {})
Traceback (most recent call last):
File "", line 1
Dotan Barak wrote:
On 25/12/2009 19:27, Gary Herron wrote:
Dotan Barak wrote:
Recover the exception, and examine the tuple of args or the message
string.
>>> try:
... eval("my_number < 10", {"__builtins__":None}, {})
... except NameError,e:
...
be
downloading simultaneously.
See http://docs.python.org/library/asyncore.html
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
mbols date, time, datetime,etc
dir on datetime shows today, now, etc
lets say for arguments sake that I want to just import the today
function, according to the documentation, the line should be:
from datetime.datetime import today.
as you can see, that didn't work. why not?
Just a little confusion on your part.
datetime is a module, so you can import it (as you did) and objects from it
datetime.datetime is a type (like a class is a type) not a module so you
cannot import from it.
So you can
import datetime
and you can
from datetime import
but that's all the further you can go with imports.
Some of the confusion may be from having a class (well actually it's a
type) with the same name as its module. This is now considered bad form.
You might achieve the effect you were you were trying for like this:
import datetime
today = datetime.datetime.today
or
from datetime import datetime
today = datetime.today
Then you'll be able to call
today()
at any time.
Gary Herron
Josh
--
http://mail.python.org/mailman/listinfo/python-list
the string if it's a string and the length of the list if it's a list.
TIA,
beno
Like this:
if isinstance(var, list):
... join ...
else:
... ??? ...
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
be
clearer to some.
>>> x = [1,2,3]
>>> print [ifor i in xfor k in range(3)]
[1, 1, 1, 2, 2, 2, 3, 3, 3]
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
odule
print x
or
from sfdata import author_list # Import individual attribute from
module.
for x in author_list:
print x
Gary Herron
FILE: sfdata.py (i'm trying to import it)
==
author_list = {
exponent operator is ** not ^, and x*x is more efficient than x**2.
So.
print [x**2 for x in xrange(1,11,2)]
Gary Herron
Kit.
On 1月19日, 上午12時30分, Steven D'Aprano wrote:
On Mon, 18 Jan 2010 08:07:41 -0800, Kit wrote:
Hello Everyone, I am not sure if I have posted this questi
rt as normal.
* Check out the "imp" module which allows you to
import from files specified via a path.
Straighten that out, then we can examine the following (suspicious) clams:
* that you must evaluate *before* some import
* that you must use globals
* python's problem with
ant
How can this be done?
TIA
Hellmut
It's naive to think this question even makes sense. There are many ways
f can be called which don't involve a parameter:
f(42)
f(time())
f(a+123)
f(sin(a))
f(f(1))
and so on.
Cheers,
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
Gary Herron wrote:
Hellmut Weber wrote:
Hi,
consider the following piece of code, please
- -
def f(param):
nameOfParam = ???
# here I want to access the name of the variable
# which was given as parameter to the function
print nameOfParam, param
return
if __name__
' '] ]
And here's two moves, X grabs the center, and O grabs the upper right
board[1][1] = 'X'
board[0][2] = 'O'
And so on.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
t, here is another of his presentations about creating
coroutines from generators:
http://www.dabeaz.com/coroutines
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
stances where it does provide a useful functionality.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
es) than in CPython? I
find it hard to believe that that would be the case, but I'm quite curious.
(I could test the particular case I mention, but I'm wondering if someone has
some fundamental knowledge that would lead to a basic understanding.)
--
Gary Robinson
CTO
Emergent Music, LL
obably homework
problems. If so, it was unethical for the student to ask for a
solution here, and it was careless of several responders to provide a
solution. Let's not make the same mistake this time.
Gary Herron
--
Gary Herron, PhD.
Department of Computer Science
DigiPen Institute of
* and 7*x to be defined, try
def __mul__(self,r):
...
def __rmul__(self,r):
Or the operation is commutative, perhaps you can get away with reusing
__mul__ for both.
def __mul__(self,r):
...
__rmul__ = __mull__
Gary Herron
The farthest I can go in this is tha
geremy condra wrote:
On Mon, Oct 19, 2009 at 2:25 AM, Tim Roberts wrote:
You wrote:
For the love of baby kittens, please, please, please tell me that
you do not believe this securely encrypts your data.
The original poster asked to have two C++ functions converted to Python.
/ processors.
It's inconvenient.
How can I do same thing in a signle script running?
Thank you in advance,
Hyunchul
Use the subprocess module in your main program to start n subprocesses
and feed each its portion of the data.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
gt;>
I wanted to wind up with r being [[1, 2, 3], [1, 2, 999], [1, 2, 3]].
What's the right way to construct r as a list of *independent* d lists?
Thanks,
-- Scott
Try this:
>>>
>>> d = [1,2,3]
>>> r = [[x for x in d] for i in range(3)]
>>> r[1][2] = 999
>>> r
[[1, 2, 3], [1, 2, 999], [1, 2, 3]]
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
a program that depends on them -- there is
no guarantee that such implementation specific behavior will be
consistent over other implementations.
Conclusion: Don't use "is" for comparison when you mean to check for
equality. And you do want an equality check here.
Gary Herron
Regards,
mk
--
http://mail.python.org/mailman/listinfo/python-list
blem though, if you surpass the ability of a float:
>>> int(float('1e20'))
10000L
>>> int(float('1e30'))
119884624838656L
Gary Herron
I'm wondering what
function to use to convert '1e7' to an integer?
noydb wrote:
Hi All,
I want to pause my script before it terminates, just so a user can
have a moment to read some print statements I include at the end. How
can this be accomplished?
Thanks!
If your IO is to/from a command line window, try this:
raw_input('Hit ENTER to exit: &#x
print bob['whatever']
2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3]
al
NEW AND IMPROVED AL!
bob
bob
It's the difference between old-style and new-style classes. Type dict
and therefore OnlyBob are new style. OnlyAl defaults to old-style.
hat line breaks are being ignored. With that information,
perhaps we can identify and solve the real problem you're having.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
Susan Day wrote:
On Mon, Nov 23, 2009 at 2:26 PM, Gary Herron
mailto:gher...@islandtraining.com>> wrote:
>>> print 'A Message From %s:\n\n %s' % ('someone','some message')
A Message From someone:
some message
So... *Exactly* wh
gazza wrote:
Hi,
I am trying to discover how to obtain the correct time of say CST/
America and EST/America in python?
Any help on this would be appreciated.
Thanks,
Garyc
The datetime module should give you all you need.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python
Python has no specific limit on string size other than memory size and
perhaps 32 bit address space and so on. However, if your file size is
even a fraction of that size, you should not attempt to read it all into
memory at once. Is there not a way to process your file in batches of a
reaso
ting the rate of convergence,
and so on.
Gary Herron
for two circles, delta=0.001 takes about a minute and delta=0.0001 is
still running after 30 minutes :-)
1.22
1.2281
1.2283479
--
import math
class Circle:
def _
Craig Berry wrote:
Is there any way to get mouse wheel events from glut in PyOpenGL?
Use Linux. (On Linux, Glut returns mouse wheel events as buttons 4 and
5), or use FreeGlut. On both Windows and Linux freeglut returns mouse
wheel events as buttons 4 and 5.
Gary Herron
--
http
Craig Berry wrote:
Can someone please tell me if there's a way to do this, or answer
definitively that there is no way? I have a design in progress that
could really use mousewheel control, and I don't want to settle for
Plan B until I know Plan A is impossible. :)
On Fri, Feb 5, 2010 at 19:48,
Craig Berry wrote:
On Sun, Feb 7, 2010 at 22:26, Gary Herron wrote:
Didn't I answer this already?
If you did, for whatever reason I didn't see it; I just rechecked my
inbox to be sure. Thanks for doing so again!
I assume, given the list we're on, that Freeglut c
Parses out the extension
fn = getattr(Functions, ext) # Lookup the correct function
fn(...) # and call it
Gary Herron
--
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mapping out?
Your example us a bad ascii art graph of -- I've no clue what?
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
spike wrote:
On Feb 8, 1:35 pm, Gary Herron wrote:
spike wrote:
Has anyone been able to come across a Python logic map or Python logic
flow chart?
An example can be seen on the right under History:
http://en.wikipedia.org/wiki/Usenet#History
This would be very helpful
wheel
events are now reported, and everything else seems to be working as
expected. Thanks for your help!
:-)
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
Imaginationworks wrote:
Hi,
I am trying to read object information from a text file (approx.
30,000 lines) with the following format, each line corresponds to a
line in the text file. Currently, the whole file was read into a
string list using readlines(), then use for loop to search the "= {"
ocess module. It can do the fork
and any necessary pipes and can do so in an OS independent way. It
might make you life much easier.
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
hat function. This
is the proper place to use the "global" keyword.
mode.py:
gvar = 123
def SetGvar(v):
global gvar # Makes gvar refer to the (global) module level gvar
gvar = v
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
erits from Iterable, and it doesn't seem to work if I define
__next__(); I am not seeing problems if I define next() instead.
What am I missing?
--
Gary Robinson
CTO
Emergent Music, LLC
personal email: gary...@me.com
work email: grobin...@flyfi.com
Company: http://www.flyfi.co
index:
>>> range(9)[2::-1]
[2, 1, 0]
Gary Herron
l[7::1]
[7, 8, 9]
[l[i] for i in range(7, len(l), 1)]
[7, 8, 9]
[l[i] for i in range(7, len(l), -1)]
[]
I don't believe the actual behaviour is documented anywhere.
Well, i
Mensanator wrote:
On Mar 5, 3:42 pm, Gary Herron wrote:
Mensanator wrote:
The only way to get a 0 from a reverse range() is to have a bound of
-1.
Not quite. An empty second bound goes all the way to the zero index:
Not the same thing. You're using the bounds o
Mensanator wrote:
On Mar 5, 6:34 pm, Gary Herron wrote:
Mensanator wrote:
On Mar 5, 3:42 pm, Gary Herron wrote:
Mensanator wrote:
The only way to get a 0 from a reverse range() is to have a bound of
-1.
Not quite. An empty second bound goes all the way
Joan Miller wrote:
How to escape the first '}' in the next string?
s = "}\n{0}".format('foo')
>>> "}}\n{0}".format('foo')
'}\nfoo'
Gary Herron
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dule to get the value there. Like this:
import helpers
print helpers.mostRecent
That will work as you hope.
Gary Herron
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John Posner wrote:
On 3/8/2010 11:55 PM, Gary Herron wrote:
The form of import you are using
from helpers import mostRecent
makes a *new* binding to the value in the module that's doing the
import.
What you can do, is not make a separate binding, but reach into the
helpers module t
This is addressed in the FAQ.
http://www.python.org/doc/faq/general/#why-are-default-values-shared-between-objects
jitendra gupta wrote:
def foo(x = [0]):
x[0] = x[0] + 1
return x[0]
def soo(x = None):
if x is None:
x = [0]
x[0] = x[0] + 1
return x[0]
>>> foo()
1
>>>foo() #See the behavi
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