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How to call a Parent Class's method from Child Class in Python?
...archy in Python, I'd like to be able to invoke methods of the parent class from a derived class. In Perl and Java, there is a keyword for this ( super ). In Perl, I might do this:
...
How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
...] // "Strin"
str.substring(to: startIndex) // "My "
str.substring(from: startIndex) // "String"
Swift 4
substring(to:) and substring(from:) are deprecated in Swift 4.
String(str[..<startIndex]) // "My "
String(str[startIndex...]) // "String"
String(str[startIndex...endIndex]) ...
Relative imports in Python 2.7
...difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not determine what package Python thinks it is in. That depends, additionally, on how you load the file into Python (by running or by importing).
There are...
Post-install script with Python setuptools
...lling a source distribution zip or tarball, or installing in editable mode from a source tree. It will not work when installing from a binary wheel (.whl)
This solution is more transparent:
You will make a few additions to setup.py and there is no need for an extra file.
Also you need to consi...
django unit tests without a db
....
Here is what I did:
Create a custom test suit runner similar to this:
from django.test.simple import DjangoTestSuiteRunner
class NoDbTestRunner(DjangoTestSuiteRunner):
""" A test runner to test without database creation """
def setup_databases(self, **kwargs):
""" Override the databas...
Importing modules from parent folder
...
You could use relative imports (python >= 2.5):
from ... import nib
(What’s New in Python 2.5) PEP 328: Absolute and Relative Imports
EDIT: added another dot '.' to go up two packages
share
...
Return JSON response from Flask view
... dict with summary information. I want to return the results as a response from a Flask view. How do I return a JSON response?
...
Static methods - How to call a method from another method?
...
How do I have to do in Python for calling an static method from another static method of the same class?
class Test() :
@staticmethod
def static_method_to_call()
pass
@staticmethod
def another_static_method() :
Test.static_method_to_call()
@cla...
How to import classes defined in __init__.py
...ectory must be in sys.path.
Your 'lib/__init__.py' might look like this:
from . import settings # or just 'import settings' on old Python versions
class Helper(object):
pass
Then the following example should work:
from lib.settings import Values
from lib import Helper
Answer to the edi...
Angular - ui-router get previous state
...Scope when the state changes.
You should be able to catch the prior state from that event (from is the state you're leaving):
$rootScope.$on('$stateChangeSuccess', function (ev, to, toParams, from, fromParams) {
//assign the "from" parameter to something
});
...