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How do you generate dynamic (parameterized) unit tests in python?
I have some kind of test data and want to create a unit test for each item. My first idea was to do it like this:
25 Answer...
Accessing class variables from a list comprehension in the class definition
...ce is saved. [4] A class object is then created using the inheritance list for the base classes and the saved local namespace for the attribute dictionary.
Emphasis mine; the execution frame is the temporary scope.
Because the scope is repurposed as the attributes on a class object, allowing it t...
Design patterns or best practices for shell scripts [closed]
...ne know of any resources that talk about best practices or design patterns for shell scripts (sh, bash etc.)?
9 Answers
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What is the fastest way to get the value of π?
I'm looking for the fastest way to obtain the value of π, as a personal challenge. More specifically, I'm using ways that don't involve using #define constants like M_PI , or hard-coding the number in.
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What are “named tuples” in Python?
... They were added in Python 2.6 and Python 3.0, although there is a recipe for implementation in Python 2.4.
For example, it is common to represent a point as a tuple (x, y). This leads to code like the following:
pt1 = (1.0, 5.0)
pt2 = (2.5, 1.5)
from math import sqrt
line_length = sqrt((pt1[0]...
How to implement __iter__(self) for a container object (Python)
... didn't exist, so you would have to do:
def __iter__(self):
yield 5
for x in some_list:
yield x
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How to make an immutable object in Python?
...swer", because it's the easiest way of doing it. Sebastian gets the bounty for giving a short Cython implementation. Cheers!
– Lennart Regebro
Feb 2 '11 at 12:39
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Is this object-lifetime-extending-closure a C# compiler bug?
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That sure looks like a bug. Thanks for bringing it to my attention. I'll look into it. It is possible that it has already been found and fixed.
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How is __eq__ handled in Python and in what order?
...(a).
If none of the above are the case, Python repeats the process looking for __cmp__. If it exists, the objects are equal iff it returns zero.
As a final fallback, Python calls object.__eq__(a, b), which is True iff a and b are the same object.
If any of the special methods return NotImplemented...
How to print to console in pytest?
...port that shows what was printed to standard out in that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
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