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How to properly assert that an exception gets raised in pytest?

... pytest.raises(Exception) is what you need. Code import pytest def test_passes(): with pytest.raises(Exception) as e_info: x = 1 / 0 def test_passes_without_info(): with pytest.raises(Exception): x = 1 / 0 def test_fails(): with pytest.raises(Exception) as e_info: ...
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How to round a number to significant figures in Python

... round_sig = lambda f,p: float(('%.' + str(p) + 'e') % f) allows you to adjust the number of significant digits! – denizb Aug 6 '17 at 22:43 ...
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Getting the object's property name

... More specifically, Object.keys(obj) returns an array of property names, i.e. keys, belonging to the passed in obj. – a learner has no name Mar 26 '16 at 12:43 ...
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What does Ruby have that Python doesn't, and vice versa?

There is a lot of discussions of Python vs Ruby, and I all find them completely unhelpful, because they all turn around why feature X sucks in language Y, or that claim language Y doesn't have X, although in fact it does. I also know exactly why I prefer Python, but that's also subjective, and would...
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Read environment variables in Node.js

...bles per project: Create a .env file under the project directory and put all of your variables there. Add this line in the top of your application entry file: require('dotenv').config(); Done. Now you can access your environment variables with process.env.ENV_NAME. ...
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What does the exclamation mark mean in a Haskell declaration?

... It's a strictness declaration. Basically, it means that it must be evaluated to what's called "weak head normal form" when the data structure value is created. Let's look at an example, so that we can see just what this means: data Foo = Foo Int Int !Int !(May...
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Project structure for Google App Engine

.... However, as it has grown, and features have been added, it has gotten really difficult to keep things organized - mainly due to the fact that this is my first python project, and I didn't know anything about it until I started working. ...
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What is the proper way to re-throw an exception in C#? [duplicate]

... ends on that statement and not at the real source of the exception. Basically, it should be deemed a criminal offense to use "throw ex". share | improve this answer | follo...
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top -c command in linux to filter processes listed based on processname

Top lists all the processes, there are good options to filter the processes by username by using the option -u but I am wondering if there is any easy way to filter the processes based on processname listed under COMMAND column of the top output. ...
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Changing the resolution of a VNC session in linux [closed]

...t 1600x1200 it doesn't fit on the laptop's screen, and I have to scroll it all the time. 15 Answers ...