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Properties file in python (similar to Java Properties)
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Since nowhere here it is mentioned, let me add again that this is not the same. I cant speak for Java or Py3, and maybe it works for simple key/values. But the syntax for string interpolation is different. This solution provides Python formatting, ie. %(...
Get model's fields in Django
...This means if something does change in the future, you only have to change one function.
def get_model_fields(model):
return model._meta.fields
I believe this will return a list of Field objects. To get the value of each field from the instance, use getattr(instance, field.name).
Update: Dja...
Passing argument to alias in bash [duplicate]
.../to/bar "$@" fixed args; }
$ foo abc 123
will be executed as if you had done
$ /path/to/bar abc 123 fixed args
To undefine an alias:
unalias foo
To undefine a function:
unset -f foo
To see the type and definition (for each defined alias, keyword, function, builtin or executable file):
ty...
Why does `a == b or c or d` always evaluate to True?
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In many cases, Python looks and behaves like natural English, but this is one case where that abstraction fails. People can use context clues to determine that "Jon" and "Inbar" are objects joined to the verb "equals", but the Python interpreter is more literal minded.
if name == "Kevin" or "Jon" o...
Resetting a multi-stage form with jQuery
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At this point I think it'd be better to just list the ones you DO want to empty, so instead of :input in the first line you do ":text, :select, :radio, :checkbox"
– Paolo Bergantino
Mar 25 '09 at 5:36
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How does a “stack overflow” occur and how do you prevent it?
... what are the best ways to make sure it doesn't happen, or ways to prevent one, particularly on web servers, but other examples would be interesting as well?
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Does pandas iterrows have performance issues?
...space
4) itertuples
5) iterrows
6) updating an empty frame (e.g. using loc one-row-at-a-time)
Using a custom Cython routine is usually too complicated, so let's skip that for now.
1) Vectorization is ALWAYS, ALWAYS the first and best choice. However, there is a small set of cases (usually involvi...
Updating packages in Emacs
...he following setup for packages (not sure if there is a better recommended one):
4 Answers
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jQuery/JavaScript to replace broken images
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Handle the onError event for the image to reassign its source using JavaScript:
function imgError(image) {
image.onerror = "";
image.src = "/images/noimage.gif";
return true;
}
<img src="image.png" onerror="imgError(...
Will console.log reduce JavaScript execution performance?
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If you are going to have this on a public site or something, anyone with little knowledge on using the developer tools can read your debug messages. Depending on what you are logging, this may not be a desirable behavior.
One of the best approaches is to wrap the console.log in one of yo...