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List vs tuple, when to use each? [duplicate]
In Python, when should you use lists and when tuples?
7 Answers
7
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Threading pool similar to the multiprocessing Pool?
...port ThreadPool
It is implemented using a dummy Process class wrapping a python thread. This thread-based Process class can be found in multiprocessing.dummy which is mentioned briefly in the docs. This dummy module supposedly provides the whole multiprocessing interface based on threads.
...
Does Flask support regular expressions in its URL routing?
....randomify = randomify
self.regex = '(?:yes|no|maybe)'
def to_python(self, value):
if value == 'maybe':
if self.randomify:
return not randrange(2)
raise ValidationError()
return value == 'yes'
def to_url(self, value):
...
Convert a list of data frames into one data frame
...:autoplot(mb)+theme_bw()
R version 3.6.0 (2019-04-26)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04.2 LTS
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so
packageVersion("plyr")
packageV...
How do I measure request and response times at once using cURL?
....092s
----------
time_total: 0.164s
Make a Linux/Mac shortcut (alias)
alias curltime="curl -w \"@$HOME/.curl-format.txt\" -o NUL -s "
Then you can simply call...
curltime wordpress.org
Thanks to commenter Pete Doyle!
Make a Linux/Mac stand-alone script
This ...
How to move all files including hidden files into parent directory via *
...
You can find a comprehensive set of solutions on this in UNIX & Linux's answer to How do you move all files (including hidden) from one directory to another?. It shows solutions in Bash, zsh, ksh93, standard (POSIX) sh, etc.
You can use these two commands together:
mv /path/subfolder/...
How do I implement __getattribute__ without an infinite recursion error?
...ion of __getattribute__ you avoid the recursive hell you were in before.
Ipython output with code in foo.py:
In [1]: from foo import *
In [2]: d = D()
In [3]: d.test
Out[3]: 0.0
In [4]: d.test2
Out[4]: 21
Update:
There's something in the section titled More attribute access for new-style cla...
Internal Error 500 Apache, but nothing in the logs?
...pt but didnt give it execute permissions? or perhaps it was corrupted in a linux environment if you write the script in windows and then upload it to the server without the line endings being converted you will get this error.
in perl if you forget
print "content-type: text/html\r\n\r\n";
you w...
What is a stream?
...avoid unneeded complexity and will use the concept of a file relative to a linux operating system because of its simplicity and accessibility.
What is a file?
A file is an abstraction :)
Or, as simply as I can explain, a file is one part data structure describing the file and one part data which ...
What is the Difference Between read() and recv() , and Between send() and write()?
...
Another thing on linux is:
send does not allow to operate on non-socket fd. Thus, for example to write on usb port, write is necessary.
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