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How do I create a namespace package in Python?
In Python, a namespace package allows you to spread Python code among several projects. This is useful when you want to release related libraries as separate downloads. For example, with the directories Package-1 and Package-2 in PYTHONPATH ,
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Why do we use __init__ in Python classes?
...Spot is a bit of a cripple and is mostly yellow. The __init__ function is called a constructor, or initializer, and is automatically called when you create a new instance of a class. Within that function, the newly created object is assigned to the parameter self. The notation self.legs is an attrib...
Difference between Python's Generators and Iterators
...ry generator is an iterator, but not vice versa. A generator is built by calling a function that has one or more yield expressions (yield statements, in Python 2.5 and earlier), and is an object that meets the previous paragraph's definition of an iterator.
You may want to use a custom iterator, ra...
What is the difference between 'java', 'javaw', and 'javaws'?
...ava Applet Viewer, JNLP and Java Web Start, including the javaws tool, are all deprecated in JDK 9 and will be removed in a future release.
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Using property() on classmethods
... (using the classmethod() function) for getting and setting what is essentially a static variable. I tried to use the property() function with these, but it results in an error. I was able to reproduce the error with the following in the interpreter:
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How do I run a spring boot executable jar in a Production environment?
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By far the most easiest and reliable way to run Spring Boot applications in production is with Docker. Use Docker Compose, Docker Swarm or Kubernetes if you need to use multiple connected services.
Here's a simple Dockerfile from the of...
How to avoid having class data shared among instances?
...problem you face is that x.list and y.list are the same list, so when you call append on one, it affects the other.
– Matt Moriarity
Nov 5 '09 at 14:04
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Inheritance and Overriding __init__ in python
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The book is a bit dated with respect to subclass-superclass calling. It's also a little dated with respect to subclassing built-in classes.
It looks like this nowadays:
class FileInfo(dict):
"""store file metadata"""
def __init__(self, filename=None):
super(FileInfo,...
Failed to locate the winutils binary in the hadoop binary path
...inary distribution of Apache Hadoop 2.2.0 release and try to run it on Microsoft Windows, then we'll encounter ERROR util.Shell: Failed to locate the winutils binary in the hadoop binary path.
The binary distribution of Apache Hadoop 2.2.0 release does not contain some windows native components (li...
Build an ASCII chart of the most commonly used words in a given text [closed]
... LabVIEW's very happy in its hardware control and measurement niche, but really pretty awful for string manipulation.
– Joe Z
Jul 4 '10 at 6:23
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