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How to dynamically load a Python class
...hon documentation, here's the function you want:
def my_import(name):
components = name.split('.')
mod = __import__(components[0])
for comp in components[1:]:
mod = getattr(mod, comp)
return mod
The reason a simple __import__ won't work is because any import of anything pa...
Setup RSpec to test a gem (not Rails)
...the only thing you need to have in your Gemfile is the following:
source "https://rubygems.org"
gemspec
This tells Bundler to look inside your gemspec file for the dependencies when you run bundle install.
Next up, make sure that RSpec is a development dependency of your gem. Edit the gemspec so...
Find which version of package is installed with pip
...
As of pip 1.3, there is a pip show command.
$ pip show Jinja2
---
Name: Jinja2
Version: 2.7.3
Location: /path/to/virtualenv/lib/python2.7/site-packages
Requires: markupsafe
In older versions, pip freeze and grep should do the job nicely.
$ pip freeze | gre...
Difference between fold and reduce?
...eUploader: {
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Elegant ways to support equivalence (“equality”) in Python classes
...n2 # False -- oops
So, Python by default uses the object identifiers for comparison operations:
id(n1) # 140400634555856
id(n2) # 140400634555920
Overriding the __eq__ function seems to solve the problem:
def __eq__(self, other):
"""Overrides the default implementation"""
if isinstance...
Use different Python version with virtualenv
... Python 2.7.9. you would do something along these lines:
mkdir ~/src
wget http://www.python.org/ftp/python/2.7.9/Python-2.7.9.tgz
tar -zxvf Python-2.7.9.tgz
cd Python-2.7.9
mkdir ~/.localpython
./configure --prefix=$HOME/.localpython
make
make install
virtual env
cd ~/src
wget https://pypi.pytho...
Eclipse returns error message “Java was started but returned exit code = 1”
....requiredJavaVersion=1.6 fixed this as my jvm version is 1.6. From the doc http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fruntime-options.html
osgi.requiredJavaVersion
The minimum java version that is required to launch Eclipse. The default valu...
How can I post data as form data instead of a request payload?
In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
...
Ternary Operator Similar To ?:
...urn a value, you can use this
val a = if (1 < 0) 1 else 2
More info: https://alvinalexander.com/scala/scala-if-then-ternary-operator-cookbook-examples
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How do I show a Save As dialog in WPF?
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