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Can Selenium Webdriver open browser windows silently in background?
...t install Xvfb:
sudo apt-get install xvfb
then install PyVirtualDisplay from Pypi:
pip install pyvirtualdisplay
Sample Selenium script in Python in a headless mode with PyVirtualDisplay:
#!/usr/bin/env python
from pyvirtualdisplay import Display
from selenium import webdriver
...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...ision results, double-precision suffices for a gold standard — the error from aaaaaa computed in double is *vastly smaller than the error of any of the single-precision computations.
– Stephen Canon
Sep 24 '13 at 22:47
...
Is there any way to git checkout previous branch?
...
From the release notes for 1.6.2
@{-1} is a way to refer to the last branch you were on. This is
accepted not only where an object name is expected, but anywhere a
branch name is expected and acts as if you typed the...
How do I validate a date string format in python?
... for you and raise a ValueError if it can't.
As an example:
>>> from dateutil.parser import parse
>>> parse("2003-09-25")
datetime.datetime(2003, 9, 25, 0, 0)
This raises a ValueError if the date is not formatted correctly:
>>> parse("2003-09-251")
Traceback (most rec...
How to create a new (and empty!) “root” branch?
...
Does this essentially create a blank slate? As in, from scratch? Or does it keep all your previous changes, but just not in the git history?
– Con Antonakos
Jul 22 '16 at 2:58
...
Dictionaries and default values
...
You can also use the defaultdict like so:
from collections import defaultdict
a = defaultdict(lambda: "default", key="some_value")
a["blabla"] => "default"
a["key"] => "some_value"
You can pass any ordinary function instead of lambda:
from collections import...
How to make an input type=button act like a hyperlink and redirect using a get request? [duplicate]
...It's simple and no javascript required!
NOTE:
This approach is not valid from HTML structure. But, it works on many modern browser. See following reference :
For <button>; and
For <input type="button />
shar...
Installing Bootstrap 3 on Rails App
...are copied into the vendor directory of your application.
Adding Bootstrap from a CDN to your Rails application - The Bootstrap 3 files are served from the Bootstrap CDN.
Number 2 above is the most flexible. All you need to do is change the version number that is stored in a layout helper. So you...
What are Flask Blueprints, exactly?
...version of its structure in the plaster of your application.
# An example
from flask import Blueprint
tree_mold = Blueprint("mold", __name__)
@tree_mold.route("/leaves")
def leaves():
return "This tree has leaves"
@tree_mold.route("/roots")
def roots():
return "And roots as well"
@tree_...
connecting to MySQL from the command line
How can you connect to MySQL from the command line in a Mac? (i.e. show me the code)
6 Answers
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