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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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Should I implement __ne__ in terms of __eq__ in Python?

I have a class where I want to override the __eq__ method. It seems to make sense that I should override the __ne__ method as well, but does it make sense to implement __ne__ in terms of __eq__ as such? ...
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Unnamed/anonymous namespaces vs. static functions

... answered Sep 30 '08 at 19:06 lukeluke 31.2k77 gold badges5454 silver badges7979 bronze badges ...
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filename and line number of python script

... Whether you use currentframe().f_back depends on whether you are using a function or not. Calling inspect directly: from inspect import currentframe, getframeinfo cf = currentframe() filename = getframeinfo(cf).filename print "This is line 5, python say...
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Usage of __slots__?

What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not? 11 A...
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Is there any difference between GROUP BY and DISTINCT

... | edited May 23 '19 at 0:06 mightybruno 19022 silver badges77 bronze badges answered Oct 2 '08 at 20:10...
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A simple explanation of Naive Bayes Classification

...sitive = Prob(Test is positive|Disease) * P(Disease) _______________________________________________________________ (scaled by) Prob(Testing Positive, with or without the disease) Now, all this was just preamble, to get to Naive Bayes. Getting to Naive Bayes' So far, ...
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Difference between __getattr__ vs __getattribute__

I am trying to understand when to use __getattr__ or __getattribute__ . The documentation mentions __getattribute__ applies to new-style classes. What are new-style classes? ...
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Can someone explain __all__ in Python?

I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does? ...
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How do I protect Python code? [closed]

... Ned BatchelderNed Batchelder 306k6464 gold badges503503 silver badges608608 bronze badges ...