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List to array conversion to use ravel() function
I have a list in python and I want to convert it to an array to be able to use ravel() function.
6 Answers
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Jinja2 template variable if None Object set a default value
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I am amazed this simplicity! Python's x or y is if x is false, then y, else x. See: 5.2. Boolean Operations — and, or, not
– kenjiuno
Nov 22 '17 at 2:28
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What does Expression.Quote() do that Expression.Constant() can’t already do?
... in .NET 4.
Update: CodePlex is defunct. The Expression Trees v2 Spec (PDF) has moved to GitHub.
For example, it says the following about Expression.Quote:
4.4.42 Quote
Use Quote in UnaryExpressions to represents an expression that has a "constant" value of type Expression. Unlike a C...
Clear text from textarea with selenium
...rom selenium.webdriver.common.keys import Keys
#...your code (I was using python 3)
driver.find_element_by_id('foo').send_keys(Keys.CONTROL + "a");
driver.find_element_by_id('foo').send_keys(Keys.DELETE);
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How can I check whether a numpy array is empty or not?
... This is great for numpy, but is unfortunate that it is considered unpythonic for lists. Check out discussion for lists: stackoverflow.com/questions/53513/… It would be nice to use same pattern for numpy arrays and lists.
– eric
Jul 28 '19 at 16:41
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How do you run your own code alongside Tkinter's event loop?
...cl from different appartment" message on my computer (RedHat Enterprise 5, python 2.6.1). Bjorn might not have gotten this message, since, according to one place I checked, mishandling threading with Tkinter is unpredictable and platform-dependent.
The problem seems to be that app.start() counts a...
Class method decorator with self arguments?
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A more concise example might be as follows:
#/usr/bin/env python3
from functools import wraps
def wrapper(method):
@wraps(method)
def _impl(self, *method_args, **method_kwargs):
method_output = method(self, *method_args, **method_kwargs)
return method_output...
How to serialize SqlAlchemy result to JSON?
...o serialize your object.
As explained in Convert sqlalchemy row object to python dict
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NoSql Crash Course/Tutorial [closed]
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y_serial is written as a single Python module which reads like a working tutorial and includes many tips and references: http://yserial.sourceforge.net/
This takes the perspective of how to persist an arbitrary Python object (e.g. a dictionary data struct...
Multiplication on command line terminal
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If you like python and have an option to install a package, you can use this utility that I made.
# install pythonp
python -m pip install pythonp
pythonp "5*5"
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pythonp "1 / (1+math.exp(0.5))"
0.3775406687981454
# define a custom f...