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Allowed characters in Linux environment variable names
...ME COMMAND
1 root 0:00 /bin/sh
12 root 0:00 ps aux
Use python to verify environemnt variable
apk add python
python -c 'import os; print(os.environ["spring.application_name"])'
OUTPUT is happy-variable-name.
What happen?
Shell call builtin exec
Shell builtin exec call syscal...
Reading/writing an INI file
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The creators of the .NET framework want you to use XML-based config files, rather than INI files. So no, there is no built-in mechanism for reading them.
There are third party solutions available, though.
INI handlers can be obtained as NuGet packages, such as INI Parser.
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How do I access the command history from IDLE?
...dentally, why don't you try a better (less ugly, for starters) shell like bpython or ipython?
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How to implement my very own URI scheme on Android
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This is very possible; you define the URI scheme in your AndroidManifest.xml, using the <data> element. You setup an intent filter with the <data> element filled out, and you'll be able to create your own scheme. (More on intent filters and intent resolution here.)
Here's a short ex...
nosetests is capturing the output of my print statements. How to circumvent this?
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python3.5 -m "nose" --nocapture
– Alex Punnen
Mar 19 '18 at 9:24
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Sort a list by multiple attributes?
...Or you can achieve the same using itemgetter (which is faster and avoids a Python function call):
import operator
s = sorted(s, key = operator.itemgetter(1, 2))
And notice that here you can use sort instead of using sorted and then reassigning:
s.sort(key = operator.itemgetter(1, 2))
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Remove the first character of a string
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python 2.x
s = ":dfa:sif:e"
print s[1:]
python 3.x
s = ":dfa:sif:e"
print(s[1:])
both prints
dfa:sif:e
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sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t
... treated as the input sequence. If that string is 74 characters long, then Python sees that as 74 separate bind values, each one character long.
>>> len(img)
74
>>> len((img,))
1
If you find it easier to read, you can also use a list literal:
cursor.execute('INSERT INTO images ...
Add native files from NuGet package to project output directory
... as MSBuild will copy all None files to referencing projects.
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<NativeLibs Include="$(MSBuildThisFileDirectory)**\*.dll" />
<None Include="@(NativeLibs)">
<Link>%(Recursive...
Why does csvwriter.writerow() put a comma after each character?
...e that behavior. I get 2016-11-05 13:21:11 without quotes. What version of Python are you using?
– Laurence Gonsalves
Nov 5 '16 at 20:26
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