On 08/02/16 17:12, Ian Kelly wrote:
dict does already expose set-like views. How about:
{k: d[k] for k in d.keys() & s} # d & s
{k: d[k] for k in d.keys() - s} # d - s
Interesting. But seemingly only applies to Python 3.
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You can use dictionary comprehension :
Say :
dict1 = {'a': 123, 'b': 456}
set1 = {'a'}
intersection :
>>> { key:dict1[key] for key in dict1 if key in set1 }
{'a': 123}
difference :
>>> { key:dict1[key] for key in dict1 if not key in set1 }
{'b': 456}
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On 03/02/16 04:26, Rick Johnson wrote:
[ ... ]
And many children came from the far and wide, and they
would pet his snake, and they would play with his snake
Didn't know Pedobear had a biographer.
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On 26/01/16 17:10, mustang wrote:
I've built a sensor to measure some values.
I would like to show it on a web page with python.
This is an extract of the code:
file = open("myData.dat", "w")
while True:
temp = sensor.readTempC()
riga = "%f\n" % temp
file.write(rig
On 26/01/16 13:26, Gene Heskett wrote:
Greetings;
I have need of using a script written for python3, but the default python
on wheezy is 2.7.3.
I see in the wheezy repos that 3.2.3-6 is available.
Can/will they co-exist peacefully?
Thank you.
Cheers, Gene Heskett
On Debian Jessie :
$ ls
On 23/01/16 16:07, Jussi Piitulainen wrote:
Grobu writes:
def intdiv(a, b):
return (a - (a % (-b if a < 0 else b))) / b
Duh ... Got confused with modulos (again).
def intdiv(a, b):
return (a - (a % (-abs(b) if a < 0 else abs(b / b
You should use // here to get an
def intdiv(a, b):
return (a - (a % (-b if a < 0 else b))) / b
Duh ... Got confused with modulos (again).
def intdiv(a, b):
return (a - (a % (-abs(b) if a < 0 else abs(b / b
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On 22/01/16 04:48, Steven D'Aprano wrote:
[ ... ]
math.trunc( float(a) / b )
That fails for sufficiently big numbers:
py> a = 3**1000 * 2
py> b = 3**1000
py> float(a)/b # Exact answer should be 2
Traceback (most recent call last):
File "", line 1, in
OverflowError: long int too large t
On 21/01/16 09:39, Shiyao Ma wrote:
Hi,
I wanna simulate C style integer division in Python3.
So far what I've got is:
# a, b = 3, 4
import math
result = float(a) / b
if result > 0:
result = math.floor(result)
else:
result = math.ceil(result)
I found it's too laborious. Any quick way?
On 20/01/16 10:35, Paul Appleby wrote:
In BASH, I can have a single format descriptor for a list:
$ a='4 5 6 7'
$ printf "%sth\n" $a
4th
5th
6th
7th
Is this not possible in Python? Using "join" rather than "format" still
doesn't quite do the job:
a = range(4, 8)
print ('th\n'.join(map(str,a))
On 04/01/16 03:40, mviljamaa wrote:
I'm forming sets by set.adding to sets and this leads to sets such as:
Set([ImmutableSet(['a', ImmutableSet(['a'])]), ImmutableSet(['b', 'c'])])
Is there way union these to a single set, i.e. get
Set(['a', 'b', 'c'])
?
There's a built-in "union" method fo
On 03/12/15 02:15, c.bu...@posteo.jp wrote:
I would like to know how this could be done more elegant/pythonic.
I have a big list (over 10.000 items) with strings (each 100 to 300
chars long) and want to filter them.
list = .
for item in list[:]:
if 'Banana' in item:
list.remove(it
Perhaps you could use a parameter's default value to implement your
static variable?
Like :
# -
>>> def test(arg=[0]):
... print arg[0]
... arg[0] += 1
...
>>> test()
0
>>> test()
1
# -
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ht
On 28/11/15 03:35, Rob Hills wrote:
Hi,
For my sins I am migrating a volunteer association forum from one
platform (WebWiz) to another (phpBB). I am (I hope) 95% of the way
through the process.
Posts to our original forum comprise a soup of plain text, HTML and
BBCodes. A post */may/* include
Chris, Marko, thank you both for your links and explanations!
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On 26/11/15 00:06, Chris Angelico wrote:
On Thu, Nov 26, 2015 at 9:48 AM, ryguy7272 wrote:
Thanks!! Is that regex? Can you explain exactly what it is doing?
Also, it seems to pick up a lot more than just the list I wanted, but that's
ok, I can see why it does that.
Can you just please expla
test" class="test"' )
'"this is a test"'
It matches the first quote and stops looking for further matches after
the second quote.
Finally, the parentheses are used to indicate a capture group :
>>> a = re.search( r'"this (is) a (.+?)"', 'title="this is a test"
class="test"' )
>>> a.groups()
('is', 'test')
You can find detailed explanations about Python regular expressions at
this page : https://docs.python.org/2/howto/regex.html
HTH,
-Grobu-
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Hi
It seems that links on that Wikipedia page follow the structure :
You could extract a list of link titles with something like :
re.findall( r'\]+title="(.+?)"', html )
HTH,
-Grobu-
On 25/11/15 21:55, MRAB wrote:
On 2015-11-25 20:42, ryguy7272 wrote:
Hello experts.
same error.
It is strange that the same content has errors depends on inside a file, or
at CLI console.
What is missing I don't realize? Thanks,
You can try :
from numpy import *
from numpy.random import *
HTH,
- Grobu -
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