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Difference between __str__ and __repr__?
...oh I don't know, containing just 4 elements]
Not very. Specifically, the strings in a container would find it way too easy to disturb its string representation. In the face of ambiguity, remember, Python resists the temptation to guess. If you want the above behavior when you’re printing a list,...
Calling a function of a module by using its name (a string)
What is the best way to go about calling a function given a string with the function's name in a Python program. For example, let's say that I have a module foo , and I have a string whose content is "bar" . What is the best way to call foo.bar() ?
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How to invoke a Linux shell command from Java
...te a command in your shell
try
Process p = Runtime.getRuntime().exec(new String[]{"csh","-c","cat /home/narek/pk.txt"});
instead.
EDIT::
I don't have csh on my system so I used bash instead. The following worked for me
Process p = Runtime.getRuntime().exec(new String[]{"bash","-c","ls /home/XX...
How to output a multiline string in Bash?
How can I output a multipline string in Bash without using multiple echo calls like so:
7 Answers
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Android update activity UI from service
... binding.altitude.setText(
String.format(Locale.US,
"Pressure Altitude %d feet",
altitude.intValue())));
}
@Override
public void onServiceDisconnected(...
How to ssh to vagrant without actually running “vagrant ssh”?
...s the simplified way which also works for automated solutions where adding extra ssh parameter -F is not straightforward
– laimison
Feb 2 '19 at 16:33
3
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Why is it a bad practice to return generated HTML instead of JSON? Or is it?
...there is still the solution/hack of sending all those parts inside one big string that groups several HTML portions, and extract the relevant parts in JS.
For instance, you could return some string that looks like this :
<!-- MARKER_BEGIN_PART1 -->
here goes the html
code for part 1
<!-- ...
How to make the python interpreter correctly handle non-ASCII characters in string operations?
I have a string that looks like so:
11 Answers
11
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Filtering for empty or NULL names in a queryset
...exclude(alias__isnull=True)
If you need to exclude null values and empty strings, the preferred way to do so is to chain together the conditions like so:
Name.objects.exclude(alias__isnull=True).exclude(alias__exact='')
Chaining these methods together basically checks each condition independent...
How does Go compile so quickly?
...ed around the Go website, but I can't seem to find an explanation for Go's extraordinary build times. Are they products of the language features (or lack thereof), a highly optimized compiler, or something else? I'm not trying to promote Go; I'm just curious.
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