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Best practices: throwing exceptions from properties
When is it appropriate to throw an exception from within a property getter or setter? When is it not appropriate? Why? Links to external documents on the subject would be helpful... Google turned up surprisingly little.
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How to access outer class from an inner class?
...oke duck typing: if it does everything an inner class could possibly do... from a Pythonic point of view it's probably time to get bored with splitting hairs
– mike rodent
Nov 7 '11 at 14:40
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How to create Drawable from resource
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Be aware that this will apply the theme from the given context. If you want to ensure no theme is used, you can use ResourcesCompat.getDrawable(getResources(), R.drawable.icon, null); (where the 3rd param is an optional Theme instance).
– vaug...
How to access parent Iframe from JavaScript
...s a same domain page.
My problem is that I want to access some information from this parent Iframe from this called page (from JavaScript). How can I access this Iframe?
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Is there a “theirs” version of “git merge -s ours”?
...red way.
The only thing I've seen cause problems is if files were deleted from branchB. They show up as conflicts if something other than git did the removal.
The fix is easy. Just run git rm with the name of any files that were deleted:
git rm {DELETED-FILE-NAME}
After that, the -X theirs shou...
How do I parse XML in Python?
... the API, which ElementTree defines.
First build an Element instance root from the XML, e.g. with the XML function, or by parsing a file with something like:
import xml.etree.ElementTree as ET
root = ET.parse('thefile.xml').getroot()
Or any of the many other ways shown at ElementTree. Then do so...
How can I call a custom Django manage.py command directly from a test driver?
...n on a database table. How would I invoke the management command directly from code?
5 Answers
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How to do relative imports in Python?
...e as '__main__' by passing the mod1.py as an argument to the interpreter.
From PEP 328:
Relative imports use a module's __name__ attribute to determine that module's position in the package hierarchy. If the module's name does not contain any package information (e.g. it is set to '__main__') t...
Migrating from JSF 1.2 to JSF 2.0
...witch, at least the following steps should be done:
Remove JSF 1.2 JAR's from /WEB-INF/lib (if any).
Drop JSF 2.0 JAR's in /WEB-INF/lib (if JSF 1.2 was servletcontainer-supplied, you might want to change the classloading policy to load webapp libraries first before servletcontainer libraries, see ...
What does if __name__ == “__main__”: do?
...riants), and prior to executing that module, it will assign the name "foo" from the import statement to the __name__ variable, i.e.
# It's as if the interpreter inserts this at the top
# of your module when it's imported from another module.
__name__ = "foo"
Executing the Module's Code
After the sp...