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How do I raise the same Exception with a custom message in Python?
...thon 3, check Ben's answer
To attach a message to the current exception and re-raise it:
(the outer try/except is just to show the effect)
For python 2.x where x>=6:
try:
try:
raise ValueError # something bad...
except ValueError as err:
err.message=err.message+" hello"
...
How do I create some kind of table of content in GitHub wiki?
...
@LB--: If you edit a GitHub wiki page and change the "editing style" dropdown to "MediaWiki", you can just use the MediaWiki __TOC__ directly. Clearly the underlying autogeneration logic is there. But the functionality doesn't seem to be exposed in their Markdown...
Django rest framework nested self-referential objects
...gories')
def get_related_field(self, model_field):
# Handles initializing the `subcategories` field
return CategorySerializer()
Actually, as you've noted the above isn't quite right.
This is a bit of a hack, but you might try adding the field in after the seriali...
How can I reverse a NSArray in Objective-C?
... take advantage of the built-in reverseObjectEnumerator method on NSArray, and the allObjects method of NSEnumerator:
NSArray* reversedArray = [[startArray reverseObjectEnumerator] allObjects];
allObjects is documented as returning an array with the objects that have not yet been traversed with n...
Getting vertical gridlines to appear in line plot in matplotlib
I want to get both horizontal and vertical grid lines on my plot but only the horizontal grid lines are appearing by default. I am using a pandas.DataFrame from an sql query in python to generate a line plot with dates on the x-axis. I'm not sure why they do not appear on the dates and I have trie...
Git fast forward VS no fast forward merge
Git merge allow us to perform fast forward and no fast fast forward branch merging. Any ideas when to use fast forward merge and when to use no fast forward merge?
...
What is the advantage of using async with MVC5?
...hen a request hits the action, ASP.NET takes a thread from the thread pool and starts executing it.
The IdentityManager.Authentication.CheckPasswordAndSignIn method is invoked. This is a blocking call -> during the entire call the worker thread is being jeopardized.
And here's how the second ca...
How to go to an error using only the keyboard in Eclipse?
Let's say I have a file with 10 lines and I have a problem with the name of the package (or something) and the cursor is on the last line of the text.
...
How can I select from list of values in SQL Server
...
UNION SELECT 6
Applied to your long line of comma delimited text
Find and replace every comma with UNION SELECT
Add a SELECT in front of the statement
You now should have a working query
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maxlength ignored for input type=“number” in Chrome
...type="number"> by design.
Depending on your needs, you can use the min and max attributes as inon suggested in his/her answer (NB: this will only define a constrained range, not the actual character length of the value, though -9999 to 9999 will cover all 0-4 digit numbers), or you can use a reg...