Abhas Bhattacharya writes:
[...]
If i call one() and two() respectively, i would like to see one
and two. I dont have much knowledge of lambda functions, neither
am i going to use them, so that's something I cant answer.
It's not about lambda. The following does not contain lambda. What
iMath writes:
how to detect the encoding used for a specific text data ?
The practical thing to do is to try an encoding and see whether you
find the expected frequent letters of the relevant languages in the
decoded text, or the most frequent words. This is likely to help you
decide between
iMath writes:
which package to use ?
Read the text in as a bytes object (bytes), then it has a .decode
method that you can experiment with. Strings (str) are Unicode and
have an .encode method. These methods allow you to specify a desired
encoding and and what to do when there are errors.
dgcosgr...@gmail.com writes:
Hi Iam just starting out with python...My code below changes the txt
file into a list and add them to an empty dictionary and print how
often the word occurs, but it only seems to recognise and print the
last entry of the txt file. Any help would be great.
tm
Steven D'Aprano writes:
I have a Centos system which uses Python 2.4 as the system Python, so I
set an alias for my personal use:
[steve@ando ~]$ which python
alias python='python2.7'
/usr/local/bin/python2.7
When I call python some_script.py from the command line, it runs
gusa...@gmail.com writes:
What is the appropriate definition for the following behavior in
Python 2.7 (see code below).
Both functions have assignment in it (like x = ) so I assume, that
x is a local variable in both functions.
It's a local variable in both functions because it's a formal
krishna.k.kish...@gmail.com writes:
Can someone explain the below behavior please?
re1 = re.compile(r'(?:((?:1000|1010|1020))[ ]*?[\,]?[ ]*?){1,3}')
re.findall(re_obj,'1000,1020,1000')
['1000']
re.findall(re_obj,'1000,1020, 1000')
['1020', '1000']
However when I use [\,]?? instead
Steven D'Aprano writes:
On Wed, 07 Nov 2012 00:23:44 +, MRAB wrote:
I prefer the term reference semantics.
Oh good, because what the world needs is yet another name for the
same behaviour.
- call by sharing
- call by object sharing
- call by object reference
- call by object
-
inshu chauhan writes:
I am new to python and have a little problem to solve .. i have an
array with x, y, z co-ordinates in it as a tuple. I am trying to find
the distance between each point and sorting the points according to
the min distance.. i have tried a prog but m stuck bcoz of this
Chris Angelico writes:
Here's a side challenge. In any shell you like, start with this
failing statement, and then fix it without retyping anything:
sikorsky@sikorsky:~$ python -c a=1; if a: print(a)
File string, line 1
a=1; if a: print(a)
^
SyntaxError: invalid syntax
Dave Angel writes:
On 10/09/2012 02:07 AM, Bob Martin wrote:
in 682592 20121008 232126 Prasad, Ramit wrote:
[snip mess]
How does one unpack this post? ;-)
Since that's not the way it arrived here, i have to ask, how do you
get these posts? Are you subscribed to individual messages by
Tim Chase writes:
On 10/09/12 02:22, Jussi Piitulainen wrote:
in 682592 20121008 232126 Prasad, Ramit wrote:
[snip mess]
How does one unpack this post? ;-)
Since that's not the way it arrived here, i have to ask, how do you
get these posts?
I see a carriage return rendered as ^M
Gilles writes:
#!/usr/bin/env python
#!/usr/bin/python
What's the difference?
Not much if your python is /usr/bin/python: env looks for python and
finds the same executable.
When python is not /usr/bin/python but something else that is still
found by your system, /usr/bin/env still finds
iMath writes:
I only know the dollar sign ($) will match a pattern from the end of
a string, but which method does it work with, re.match() or
re.search()
It works with both. With re.match, the pattern has to match at the
start of the string _and_ the $ has to match the end of the string (or
Alister writes:
On Wed, 26 Sep 2012 10:48:00 +0300, Jussi Piitulainen wrote:
iMath writes:
I only know the dollar sign ($) will match a pattern from the end
of a string, but which method does it work with, re.match() or
re.search()
It works with both. With re.match, the pattern
Steven D'Aprano writes:
Python floats can represent exact integer values (e.g. 42.0), but above a
certain value (see below), not all integers can be represented. For
example:
py 1e16 == 1e16 + 1 # no such float as 10001.0
True
py 1e16 + 3 == 1e16 + 4 # or
Neal Becker writes:
I have a list of dictionaries. They all have the same keys. I want
to find the set of keys where all the dictionaries have the same
values. Suggestions?
Literally-ish:
{ key for key, val in ds[0].items() if all(val == d[key] for d in ds) }
--
Libra writes:
Hello,
I need to implement a function that returns 1 only if all the values
in a list satisfy given constraints (at least one constraint for
each element in the list), and zero otherwise.
For example, I may have a list L = [1, 2, 3, 4] and the following
constraints:
L[0]
Libra writes:
On Wednesday, September 12, 2012 3:02:44 PM UTC+2, Jussi Piitulainen wrote:
So you would associate each constraint with an index. You could
maintain a list of constraints and apply it to the values as
follows:
Yes, even though there could be more constraints for each
Steven D'Aprano writes:
On Wed, 22 Aug 2012 23:49:17 -0500, Evan Driscoll wrote:
On 8/22/2012 18:58, Ben Finney wrote:
You haven't discovered anything about types; what you have
discovered is that Python name bindings are not variables.
In fact, Python doesn't have variables – not as
shaun writes:
I'm having an issue its my first time using python and i set up a
class one of the methods is supposed to return a string but instead
returns:
bound method Param.returnString of Param.Param instance at 0x00C
389E0
Im very new to python and the object orientated feature
Frank Koshti writes:
not always placed in HTML, and even in HTML, they may appear in
strange places, such as h1 $foo(x=3)Hello/h1. My specific issue
is I need to match, process and replace $foo(x=3), knowing that
(x=3) is optional, and the token might appear simply as $foo.
To do this, I
Jean Dupont writes:
If I start python interactively I can separate the fields as
follows:
measurement=+3.874693E01,+9.999889E03,+9.91E+37,+1.876[...]
print measurement[0]
0.3874693
[...]
The script does this:
measurement=serkeith.readline().replace('\x11','').replace([...]
print
jmfauth writes:
Thinks are very clear to me. I wrote enough interactive
interpreters with all available toolkits for Windows
r = input()
u'a
Traceback (most recent call last):
File stdin, line 1, in module
SyntaxError: u'a
Er, no, not really :-)
--
Andrew Berg writes:
On 6/18/2012 11:32 AM, Jussi Piitulainen wrote:
jmfauth writes:
Thinks are very clear to me. I wrote enough interactive
interpreters with all available toolkits for Windows
r = input()
u'a
Traceback (most recent call last):
File stdin, line 1, in module
stayvoid writes:
You want to unpack the list:
function(*a) # like function(a[0], a[1], a[2], ...)
Awesome! I forgot about this.
Here's something you could have thought of for yourself even when you
didn't remember that Python does have special built-in support for
applying a function
Alain Ketterlin writes:
mlangenho...@gmail.com writes:
I would like to pass something like this into a function
test(val1,val2,'=')
and it should come back with True or False.
def test(x,y,c):
return c(x,y)
Call with: test(v1,v2, lambda x,y:x=y ). A bit noisy imho.
Re noisy:
someone writes:
except it would be nice to learn some things for future use (for
instance understanding SVD more - perhaps someone geometrically can
explain SVD, that'll be really nice, I hope)...
The Wikipedia article looks promising to me:
deuteros writes:
I'm using regular expressions to split a string using multiple
delimiters. But if two or more of my delimiters occur next to each
other in the string, it puts an empty string in the resulting
list. For example:
re.split(':|;|px', width:150px;height:50px;float:right)
S.B writes:
Hello friends.
Newb question here.
I'm trying to find an efficient way to grep a file with python.
The problem is that all the solutions I find on the web read a line
at a time from the file with a for line in loop and check each
line for the RE instead of sweeping through the
Kiuhnm writes:
On 4/20/2012 17:50, Nobody wrote:
On Thu, 19 Apr 2012 12:28:50 -0700, dmitrey wrote:
can I somehow overload operators like =, - or something
like that? (I'm searching for appropriate overload for logical
implication if a then b)
You cannot create new operators, but
Sania writes:
So I am trying to get the number of casualties in a text. After 'death
toll' in the text the number I need is presented as you can see from
the variable called text. Here is my code
I'm pretty sure my regex is correct, I think it's the group part
that's the problem.
I am using
Sania writes:
On Apr 19, 2:48 am, Jussi Piitulainen jpiit...@ling.helsinki.fi
wrote:
Sania writes:
So I am trying to get the number of casualties in a text. After 'death
toll' in the text the number I need is presented as you can see from
the variable called text. Here is my code
Yingjie Lan writes:
Clearly dynamic strings are much more powerful,
allowing arbitrary expressions inside. It is also
more terse and readable, since we need no dictionary.
...
On the implementation, I would suppose new
syntax is needed (though very small).
I don't think you need any new
Peter Daum writes:
... I was under the illusion, that python (like e.g. perl) stored
strings internally in utf-8. In this case the conversion would simple
mean to re-label the data. Unfortunately, as I meanwhile found out, this
is not the case (nor the apple encoding ;-), so it would indeed
Kiuhnm writes:
On 3/26/2012 10:52, Devin Jeanpierre wrote:
On Sun, Mar 25, 2012 at 11:16 AM, Kiuhnm
kiuhnm03.4t.yahoo...@mail.python.org wrote:
On 3/25/2012 15:48, Tim Chase wrote:
The old curmudgeon in me likes the Pascal method of using = for
equality-testing, and := for assignment
Alec Taylor writes:
Simple mathematical problem, + and - only:
1800.00-1041.00-555.74+530.74-794.95
-60.9500045
That's wrong.
Not by much. I'm not an expert, but my guess is that the exact value
is not representable in binary floating point, which most programming
languages use
Righard van Roy writes:
Hello,
I want to add an item to a list, except if the evaluation of that item
results in an exception.
I could do that like this:
def r(x):
if x 3:
raise(ValueError)
try:
list.append(r(1))
except:
pass
try:
list.append(r(5))
Νικόλαος Κούρας writes:
So that means that
for host, hits, agent, date in dataset:
is:
for host, hits, agent, date in (foo,7,IE6,1/1/11)
and then:
for host, hits, agent, date in (bar,42,Firefox,2/2/10)
and then:
for host, hits, agent, date in (baz,4,Chrome,3/3/09)
So
rusi writes:
On Dec 15, 3:58 pm, Chris Angelico wrote:
On Thu, Dec 15, 2011 at 9:47 PM, Robert Kern wrote:
42 = 2 mod 5
2 = 42 mod 5
It might make more sense to programmers if you think of it as
written:
42 = 2, mod 5
2 = 42, mod 5
ChrisA
For the record I should say
Steven D'Aprano writes:
On Mon, 12 Dec 2011 09:29:11 -0800, Eelco wrote:
[quoting Jussi Piitulainen jpiit...@ling.helsinki.fi]
They recognize modular arithmetic but for some reason insist that
there is no such _binary operation_. But as I said, I don't
understand their concern. (Except
Nick Dokos writes:
Jussi Piitulainen wrote:
They recognize modular arithmetic but for some reason insist that
there is no such _binary operation_. But as I said, I don't
understand their concern. (Except the related concern about some
programming languages, not Python, where the remainder
Eelco writes:
On 14 dec, 09:56, Jussi Piitulainen wrote:
But I think the argument there are several such functions,
therefore, _in mathematics_, there is no such function is its own
caricature.
Indeed. Obtaining a well defined function is just a matter of
picking a convention
rusi writes:
On Dec 14, 1:56 pm, Jussi Piitulainen jpiit...@ling.helsinki.fi
wrote:
Is someone saying that _division_ is not defined because -42 div -5 is
somehow both 9 and 8? Hm, yes, I see that someone might. The two
operations, div and rem, need to be defined together
Steven D'Aprano writes:
On Wed, 14 Dec 2011 10:56:02 +0200, Jussi Piitulainen wrote:
I'm not misunderstanding any argument. There was no
argument. There was a blanket pronouncement that _in mathematics_
mod is not a binary operator. I should learn to challenge such
pronouncements and ask
Eelco Hoogendoorn writes:
As for %; it is entirely unclear to me why that obscure operation
ever got its own one-character symbol. Ill take 'mod', or even
better, 'modulus' any day of the week.
The modulus is not the result but one of the arguments: when numbers x
and y are congruent modulo n
Eelco writes:
The modulus is not the result but one of the arguments: when numbers x
and y are congruent modulo n (stated in terms of the modulo operation:
x mod n = y mod n), the modulus is n. A word for x mod n is remainder.
I agree about the obscurity of using the percent sign as the
Terry Reedy writes:
On 12/12/2011 5:59 AM, Jussi Piitulainen wrote:
Past experience in mathematics newsgroups tells me
that some mathematicians do not accept the existence of any remainder
operator at all.
Even though they carry hour/minute/second remindering devices on their
bodies
Eelco writes:
They recognize modular arithmetic but for some reason insist that
there is no such _binary operation_. But as I said, I don't understand
their concern. (Except the related concern about some programming
languages, not Python, where the remainder does not behave well with
Terry Reedy writes:
On 12/7/2011 7:03 PM, Steven D'Aprano wrote:
On Wed, 07 Dec 2011 09:09:16 -0800, Massi wrote:
Is there a way to create three variables dynamically inside Sum
in order to re write the function like this?
I should have mentioned in my earlier response that 'variable'
Roy Smith writes:
Consider the following django snippet. Song(id) raises DoesNotExist
if the id is unknown.
try:
songs = [Song(id) for id in song_ids]
except Song.DoesNotExist:
print unknown song id (%d) % id
Is id guaranteed to be in scope in the print
Chris Angelico writes:
On Sun, Oct 9, 2011 at 12:07 AM, Jussi Piitulainen wrote:
But both negations can be avoided by modus tollens.
If you are able to start the car, the key is in the ignition.
But this translation implies looking at the result and ascertaining
the state, which is less
Mel writes:
Steven D'Aprano wrote:
candide wrote:
So what is the usefulness of the not in operator ? Recall what Zen of
Python tells
There should be one-- and preferably only one --obvious way to do it.
And not in is the obvious way to do it.
If the key is not in the
joni writes:
Have a simple question in the Integer calculator in Python 2.65 and
also 2.7..
The consol showing:
Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
...
-7/3
-3
-3 are more wrong than -2. Negativ number seems not to round to
nearest interger, but the integer UNDER the
Alec Taylor writes:
Hmm, nothing mentioned so far works for me...
Here's a very small test case:
python -u Convert to Creole.py
File Convert to Creole.py, line 1
SyntaxError: Non-ASCII character '\xe2' in file Convert to Creole.py
on line 1, but no encoding declared; see
rusi writes:
On Jun 3, 11:17 am, Jussi Piitulainen wrote:
rusi writes:
So I tried:
Recast the comprehension as a map
Rewrite the map into a fmap (functionalmap) to create new bindings
def fmap(f,lst):
if not lst: return []
return [f(lst[0])] + fmap(f, lst[1
rusi writes:
On Jun 5, 5:03 pm, Jussi Piitulainen wrote:
rusi writes:
On Jun 3, 11:17 am, Jussi Piitulainen wrote:
rusi writes:
So I tried:
Recast the comprehension as a map
Rewrite the map into a fmap (functionalmap) to create new bindings
def fmap(f,lst
rusi writes:
So I tried:
Recast the comprehension as a map
Rewrite the map into a fmap (functionalmap) to create new bindings
def fmap(f,lst):
if not lst: return []
return [f(lst[0])] + fmap(f, lst[1:])
Still the same effects.
Obviously I am changing it at the wrong place...
Alain Ketterlin writes:
Gregory Ewing writes:
Alain Ketterlin wrote:
But going against generally accepted semantics should at least be
clearly indicated. Lambda is one of the oldest computing
abstraction, and they are at the core of any functional
programming language.
Yes, and
Alain Ketterlin writes:
Steven D'Aprano writes:
I agree it's not intuitive. But where does it say that programming
language semantics must always be intuitive?
Nowhere. But going against generally accepted semantics should at
least be clearly indicated. Lambda is one of the oldest
Anirudh Sivaraman writes:
I am a relative new comer to Python. I see that typing is strongly
enforced in the sense you can't concatenate or add a string and an
integer. However comparison between a string and an integer seems to
be permitted. Is there any rationale behind this ?
In Python 3
harrismh777 writes:
fs=[]
fs = [(lambda n: i + n) for i in range(10)]
[fs[i](1) for i in range(10)]
[10, 10, 10, 10, 10, 10, 10, 10, 10, 10] === not good
( that was a big surprise! . . . )
( let's try it another way . . . )
The ten functions share the same i. The
Thomas Rachel writes:
Am 31.05.2011 12:08 schrieb Jussi Piitulainen:
The same sharing-an-i thing happens here:
fs = []
for i in range(4):
...fs.append(lambda n : i + n)
...
fs[0](0)
3
And the different private-j thing happens here:
gs = []
for i in range(4
Laurent Claessens writes:
Le 30/05/2011 11:02, Terry Reedy a écrit :
On 5/30/2011 3:38 AM, Laurent wrote:
Cool. I was thinking that 5 was the name, but
5.__add__(6)
File stdin, line 1
5.__add__(6)
Try 5 .__add__(6)
What is the rationale behind the fact to add a space
tkp...@hotmail.com writes:
Looking through the docs did not clarify my understanding of the
issue. Why can I not split on '\t' when reading in binary mode?
You can split on b'\t' to get a list of byteses, which you can then
decode if you want them as strings.
You can decode the bytes to get a
geremy condra writes:
or O(1):
φ = (1 + sqrt(5)) / 2
def fib(n):
numerator = (φ**n) - (1 - φ)**n
denominator = sqrt(5)
return round(numerator/denominator)
Testing indicates that it's faster somewhere around 7 or so.
And increasingly inaccurate from 71 on.
--
Steven D'Aprano writes:
Lisp uses the empty list and the special atom NIL as false values,
any other s-expression is true. Scheme is different: it defines a
special false atom, and empty lists are considered true. In Ruby,
I'll inject a pedantic note: there is only one false value in both
Gregory Ewing writes:
Chris Angelico wrote:
Question: How many factorial functions are implemented because a
program needs to know what n! is, and how many are implemented to
demonstrate recursion (or to demonstrate the difference between
iteration and recursion)? :)
(I can't get to
Laurent Claessens writes:
file_list = []
for root, _, filenames in os.walk(root_path):
for filename in filenames:
file_list.append(os.path.join(root, filename))
What does the notation _ stands for ? Is it a sort of /dev/null ?
x, _, y = 1, hukairs, 3
x, y
Geobird writes:
@ Ulrich : Tx
@ Rebert : Appreciate your interpretation.
It made me think about ternary operation . Say
(a b) and x or y
Are all ternary operations prone to ...( in your words )
It exploits short-circuit evaluation
Daniel Fetchinson writes:
This question is really about sed not python, hence it's totally
off. But since lots of unix heads are frequenting this list I
thought I'd try my luck nevertheless.
...
using python. The pattern is that the first line is deleted, then 2
lines are kept, 3 lines are
Jussi Piitulainen writes:
Daniel Fetchinson writes:
This question is really about sed not python, hence it's totally
off. But since lots of unix heads are frequenting this list I
thought I'd try my luck nevertheless.
...
using python. The pattern is that the first line is deleted
Kelson Zawack writes:
The example I have in mind is list like [2,2,2,2,2,2,1,3,3,3,3]
where you want to loop until you see not a 2 and then you want to
loop until you see not a 3. In this situation you cannot use a for
loop as follows:
...
because it will eat the 1 and not allow the second
Yingjie Lan writes:
I am not sure how to interprete this, in the interactive mode:
30 is True
False
(30) is True
True
3 (0 is True)
True
Why did I get the first 'False'? I'm a little confused.
It is interpreted as equivalent to this:
3 0 and 0 is True
False
From the
Terry Reedy writes:
On 8/27/2010 3:43 PM, Jussi Piitulainen wrote:
Dave Angel writes:
There could easily be a .reverse() method on strings. It would return
the reversed string, like .swapcase() returns the swapcased string.
Could be, but the main use case seems to be for palindrome
Richard Arts writes:
On Fri, Aug 27, 2010 at 10:51 PM, Jussi Piitulainen wrote:
Meanwhile, I have decided to prefer this:
def palindromep(s):
def reversed(s):
return s[::-1]
return s == reversed(s)
That seems like a bit of overkill... Why would you want to define
Steven D'Aprano writes:
On Sat, 28 Aug 2010 09:22:13 +0300, Jussi Piitulainen wrote:
Terry Reedy writes:
On 8/27/2010 3:43 PM, Jussi Piitulainen wrote:
Dave Angel writes:
There could easily be a .reverse() method on strings. It would return
the reversed string, like .swapcase() returns
Arnaud Delobelle writes:
Also, I an not aware that it is customary in python to name
predicate functions with a p suffix - Python is not Lisp!
Just to clarify my position: I did not mean to imply that names like
palindromep might be customary in Python - clearly they are not - and
I am quite
Paul Rubin writes:
Ian writes:
On 27/08/2010 21:51, Jussi Piitulainen wrote:
Meanwhile, I have decided to prefer this:
def palindromep(s):
def reversed(s):
return s[::-1]
return s == reversed(s)
I like this.
s[::-1] is obscure and non-obvious, especially
Ian writes:
If you want to or must do it recursively.
(Shown in pseudo code to make the logic clearer)
def isPalindrome(pal)
''' test pal (a list) is a palindrome '''
if length of pal = 1
return True # all one letter strings are palindromes.
if first equals last
Dave Angel writes:
Jussi Piitulainen wrote:
Ian writes:
Of course, the simpler way is to use the definition of a
Palindrome as the same backwards and forwards.
def isPalindrome(pal)
return pal == pal.reverse
Agreed. But is there any nicer way to spell .reverse than [::-1] in
Python
MRAB writes:
On 27/08/2010 20:43, Jussi Piitulainen wrote:
Dave Angel writes:
Jussi Piitulainen wrote:
Agreed. But is there any nicer way to spell .reverse than [::-1]
in Python? There is .swapcase() but no .reverse(), right?
There can't be a .reverse() method on string, because it's
Jed writes:
alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would
include the whole alphabet but I shortened it here
theword = 'churro'
I would like to split the string 'churro' into a list containing:
'ch','u','rr','o'
All non-overlapping matches, each as long as can be, and
Lie Ryan writes:
On 06/15/10 21:49, superpollo wrote:
goal (from e.c.m.): evaluate
1^2+2^2+3^2-4^2-5^2+6^2+7^2+8^2-9^2-10^2+...-2010^2, where each
three consecutive + must be followed by two - (^ meaning ** in
this context)
[...]
Probably bending the rules a little bit:
sum(x**2 -
superpollo writes:
goal (from e.c.m.): evaluate
1^2+2^2+3^2-4^2-5^2+6^2+7^2+8^2-9^2-10^2+...-2010^2, where each three
consecutive + must be followed by two - (^ meaning ** in this context)
my solution:
s = 0
for i in range(1, 2011):
... s += i**2
... if not (i+1)%5:
...
Peter Otten writes:
Victor Eijkhout wrote:
I have two long ints, both too long to convert to float, but their
ratio is something reasonable. How can I compute that? The obvious
(1.*x)/y does not work.
import fractions
x = 12345 * 10**1000
y = 765 * 10**1000
float(x)
Traceback
Alf P. Steinbach writes:
The point is, if he's upset about Chris quoting that, then he's
probably unaware that he's posting it in plaintext himself.
The complaint was not about quoting but about using in public. Chris
sent his piece to three addresses. From his headers, redacted:
Stefan Behnel writes:
Jussi Piitulainen, 04.03.2010 22:40:
Stefan Behnel writes:
Jussi Piitulainen, 04.03.2010 11:46:
I am observing weird semi-erratic behaviour that involves Python 3
and lxml, is extremely sensitive to changes in the input data, and
only occurs when I name a partial
Dear group,
I am observing weird semi-erratic behaviour that involves Python 3 and
lxml, is extremely sensitive to changes in the input data, and only
occurs when I name a partial result. I would like some help with this,
please. (Python 3.1.1; GNU/Linux; how do I find lxml version?)
The test
Stefan Behnel writes:
Jussi Piitulainen, 04.03.2010 11:46:
I am observing weird semi-erratic behaviour that involves Python 3
and lxml, is extremely sensitive to changes in the input data, and
only occurs when I name a partial result. I would like some help
with this, please. (Python
This is the full data file on which my regress/Tribug exhibits the
behaviour that I find incomprehensible, described in the first post in
this thread. The comment in the beginning of the file below was
written before I commented out some records in the data, so the actual
numbers now are not ten
Terry Reedy writes:
On 2/11/2010 11:23 AM, Jussi Piitulainen wrote:
Robert Kern writes:
On 2010-02-11 06:31 AM, Shashwat Anand wrote:
There is a little issue here that ' -.1 ** .1' should give you
error message. That is it.
No, fractional powers of negative numbers are perfectly
Terry Reedy writes:
On 2/12/2010 4:40 AM, Jussi Piitulainen wrote:
Terry Reedy writes:
On 2/11/2010 11:23 AM, Jussi Piitulainen wrote:
Robert Kern writes:
On 2010-02-11 06:31 AM, Shashwat Anand wrote:
There is a little issue here that ' -.1 ** .1' should give you
error message
Terrence Cole writes:
Can someone explain to me what python is doing here?
Python 3.1.1 (r311:74480, Feb 3 2010, 13:36:47)
[GCC 4.3.4] on linux2
Type help, copyright, credits or license for more information.
-0.1 ** 0.1
-0.7943282347242815
a = -0.1; b = 0.1
a ** b
Robert Kern writes:
On 2010-02-11 06:31 AM, Shashwat Anand wrote:
There is a little issue here that ' -.1 ** .1' should give you
error message. That is it.
No, fractional powers of negative numbers are perfectly valid
mathematically. The result is a complex number. In Python 3 (what
the
Terry Reedy writes:
definitions. Lambda expressions create functions just like def
statements and are not closures and do not create closure unless
nested within another function definition. Thinking otherwise is
Seems quite closed in the top level environment to me:
Python 2.3.4 (#1, Jul
Benjamin Kaplan writes:
On Monday, November 30, 2009, Louis Steinberg wrote:
I have run into what seems to be a major bug, but given my short
exposure to Python is probably just a feature:
running
Python 2.6.4 (r264:75821M, Oct 27 2009, 19:48:32)
[GCC 4.0.1 (Apple Inc. build 5493)] on
7stud writes:
I'm trying to install lxml, but I can't figure out the installation
instructions. Here:
...
My os is mac os x 10.4.11. But this:
STATIC_DEPS=true easy_install lxml
is not a valid command:
$ sudo STATIC_DEPS=true easy_install lxml
Password:
sudo: STATIC_DEPS=true:
Miles Kaufmann writes:
[...]
I'm curious what algorithm calls for random numbers on a closed
interval.
The Box-Muller transform, polar form. At least Wikipedia says so.
--
http://mail.python.org/mailman/listinfo/python-list
Esmail writes:
random.random() will generate a random value in the range [0, 1).
Is there an easy way to generate random values in the range [0, 1]?
I.e., including 1?
I am implementing an algorithm and want to stay as true to the
original design specifications as possible though I
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