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How to generate all permutations of a list?
...(iterable, r=None):
# permutations('ABCD', 2) --> AB AC AD BA BC BD CA CB CD DA DB DC
# permutations(range(3)) --> 012 021 102 120 201 210
pool = tuple(iterable)
n = len(pool)
r = n if r is None else r
if r > n:
return
indices = range(n)
cycles = rang...
Preserve Line Breaks From TextArea When Writing To MySQL
...e same text which is in textarea to store in mysql
and at a getting time i can also simply displaying plain text.....
step 1:
$status=$_POST['status'];<br/>
$textToStore = nl2br(htmlentities($status, ENT_QUOTES, 'UTF-8'));
In query enter $textToStore....
step 2:
write code for select query.....
What are the most common non-BMP Unicode characters in actual use? [closed]
...
Excellent question!
The answer is the mathematical letters. This past December I did a scan of the entire PubMed Open Access corpus, and came up with these figures for astral characters in it.
The first number in the figures below is how many copies of each given code ...
Bash/sh - difference between && and ;
...n.
But with && the second one will not run.
This is a "lazy" logical "AND" operand between operations.
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How to open emacs inside bash
...type command "emacs" in terminal, it opens emacs as a seperate window. How can I open it inside the terminal, like nano editor?
...
Get name of current class?
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obj.__class__.__name__ will get you any objects name, so you can do this:
class Clazz():
def getName(self):
return self.__class__.__name__
Usage:
>>> c = Clazz()
>>> c.getName()
'Clazz'
...
Concatenating Files And Insert New Line In Between Files
I have multiple files which I want to concat with cat .
Let's say
7 Answers
7
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Pickle incompatibility of numpy arrays between Python 2 and 3
...to load a "binstring" object, which is assumed to be ASCII, while in this case it is binary data. If this is a bug in the Python 3 unpickler, or a "misuse" of the pickler by numpy, I don't know.
Here is something of a workaround, but I don't know how meaningful the data is at this point:
import p...
How to use multiple AWS Accounts from the command line?
...en EC2_CERT) environment variables:
-K <private key>
-C <certificate>
You can put these inside aliases, e.g.
alias ec2-describe-instances1 ec2-describe-instances -K /path/to/key.pem
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Changing Java Date one hour back
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java.util.Calendar
Calendar cal = Calendar.getInstance();
// remove next line if you're always using the current time.
cal.setTime(currentDate);
cal.add(Calendar.HOUR, -1);
Date oneHourBack = cal.getTime();
java.util.Date
new Date(...