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How can I check if a View exists in a Database?
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FOR SQL SERVER
IF EXISTS(select * FROM sys.views where name = '')
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How can I easily fixup a past commit?
... environment variable using set. Adjust this as needed for other operating systems.
Using this script I can implement precisely the 'fix broken sources, stage fixes, run git fixup ' workflow I asked for:
#!/usr/bin/env python
from subprocess import call
import sys
# Taken from http://stackoverflo...
Which version of Python do I have installed?
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Python 2.5+:
python --version
Python 2.4-:
python -c 'import sys; print(sys.version)'
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How to print to console in pytest?
... write the output into a file to inspect it later, like
def test_good1(capsys):
for i in range(5):
print i
out, err = capsys.readouterr()
open("err.txt", "w").write(err)
open("out.txt", "w").write(out)
You can open the out and err files in a separate tab and let editor aut...
Where is my Django installation?
...ave difficulty finding where the Django source files are
located on your system, run the following command:
python -c "
import sys
sys.path = sys.path[1:]
import django
print(django.__path__)"
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Convert interface{} to int
... ok := val.(int) // Alt. non panicking version
The reason why you cannot convert an interface typed value are these rules in the referenced specs parts:
Conversions are expressions of the form T(x) where T is a type and x is an expression that can be converted to type T.
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A non-constant valu...
Find all storage devices attached to a Linux machine [closed]
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/proc/partitions will list all the block devices and partitions that the system recognizes. You can then try using file -s <device> to determine what kind of filesystem is present on the partition, if any.
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How to know/change current directory in Python shell?
...e the option of ignoring the environment variable and instead appending to sys.path inside of your script.
– Steven Rumbalski
Nov 23 '11 at 20:31
3
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What are named pipes?
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Both on Windows and POSIX systems, named-pipes provide a way for inter-process communication to occur among processes running on the same machine. What named pipes give you is a way to send your data without having the performance penalty of involving the network stack.
Just like you hav...
A non-blocking read on a subprocess.PIPE in Python
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A reliable way to read a stream without blocking regardless of operating system is to use Queue.get_nowait():
import sys
from subprocess import PIPE, Popen
from threading import Thread
try:
from queue import Queue, Empty
except ImportError:
from Queue import Queue, Empty # python 2.x
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