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How to remove a key from a Python dictionary?
... a key regardless of whether it is in the dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my_dict.pop('key')) and key does not exist, a Ke...
Emulate a do-while loop in Python?
...ce/justification: "Users of the language are advised to use the while-True form with an inner if-break when a do-while loop would have been appropriate."
– dtk
Aug 15 '16 at 12:47
...
What is Serialization?
...
An object in memory will be formatted by the compiler, OS and/or hardware. Change your compiler and you change your format. A serialized object will have a format defined by your code, so you can guarantee the format. This is also helpful when sending o...
Check time difference in Javascript
... 8, mm = 0, ss = 0, msec = 0
You can convert time as string to 24-hour format like this:
function parseTime(s) {
var part = s.match(/(\d+):(\d+)(?: )?(am|pm)?/i);
var hh = parseInt(part[1], 10);
var mm = parseInt(part[2], 10);
var ap = part[3] ? part[3].toUpperCase() : null;
...
What would be an alternate to [TearDown] and [SetUp] in MSTest?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
Best design for a changelog / auditing database table? [closed]
...n would hold event details (of whatever complexity) in a computer-readable format, XML / JSON. Easy to serialize, to query against (at least in Postgres / MSSQL), to reason about.
– turdus-merula
Feb 25 '18 at 23:42
...
Determining the last changelist synced to in Perforce
...eplace with the name of your client spec. This will produce output of the form:
Change 12345 on 2008/08/21 by joebloggs@mainline-client '....top line of description...'
Which is easily parsed to extract the changelist number.
...
How do I convert a pandas Series or index to a Numpy array? [duplicate]
...umpy() instead.
See this section of the v0.24.0 release notes for more information.
to_numpy() Method
df.index.to_numpy()
# array(['a', 'b'], dtype=object)
df['A'].to_numpy()
# array([1, 4])
By default, a view is returned. Any modifications made will affect the original.
v = df.index.to_...
Cost of storing AMI
...an AMI.
EBS-backed AMIs are made up of snapshots of the EBS volumes that form the AMI. You will pay storage fees for those snapshots according to the rates listed here. Your EBS volumes are not "duplicated" until the instance is launched, at which point a volume is created from the stored snapshot...
How can I find the number of arguments of a Python function?
...ample, grabbing a parameter and viewing its default value is now easily performed with:
kwarg1 = params['kwarg1']
kwarg1.default # returns: None
similarly for the rest of the objects contained in parameters.
As for Python 2.x users, while inspect.getargspec isn't deprecated, the language will ...