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Difference between subprocess.Popen and os.system
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If you check out the subprocess section of the Python docs, you'll notice there is an example of how to replace os.system() with subprocess.Popen():
sts = os.system("mycmd" + " myarg")
...does the same thing as...
sts = Popen("mycmd" + " myarg", shell=True).wait()
T...
Converting Mercurial folder to a Git repository
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On Linux or anything with bash/sh or similar, or python, try with fast export:
cd
git clone git://repo.or.cz/fast-export.git
git init git_repo
cd git_repo
~/fast-export/hg-fast-export.sh -r /path/to/old/mercurial_repo
git checkout HEAD
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Inspecting standard container (std::map) contents with gdb
... of date. With a recent GCC and GDB it Just WorksTM thanks to the built-in Python support in GDB 7.x and the libstdc++ pretty printers that come with GCC.
For the OP's example I get:
(gdb) print m
$1 = std::map with 2 elements = {[1] = 2, [2] = 4}
If it doesn't work automatically for you see the...
Using logging in multiple modules
I have a small python project that has the following structure -
11 Answers
11
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How do I write a bash script to restart a process if it dies?
I have a python script that'll be checking a queue and performing an action on each item:
8 Answers
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Why does substring slicing with index out of range work?
...ous. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character outside of a string. A single character is just a 1-character string.
(For the exact semantics of slicing outside the range of a sequence, see mgilson's answer.)
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How do you write multiline strings in Go?
Does Go have anything similar to Python's multiline strings:
9 Answers
9
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Import multiple csv files into pandas and concatenate into one DataFrame
...abases) as if it was one data source. There must be something similar in python, since it has had a 20 year jump start on doing "big data".
– Hexatonic
Dec 28 '15 at 4:22
303
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Python Pandas merge only certain columns
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f17978133%2fpython-pandas-merge-only-certain-columns%23new-answer', 'question_page');
}
);
Post as a guest
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How can I test https connections with Django as easily as I can non-https connections using 'runserv
...nnections, and one for SSL connections):
stunnel4 stunnel/dev_https &
python manage.py runserver&
HTTPS=1 python manage.py runserver 8001
Let's break this down, line-by-line:
Line 1: Starts stunnel and point it to the configuration file we just created. This has stunnel listen on port ...