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What is monkey patching?
...ace the get_data method with a stub that returns some fixed data.
Because Python classes are mutable, and methods are just attributes of the class, you can do this as much as you like - and, in fact, you can even replace classes and functions in a module in exactly the same way.
But, as a commente...
Webrick as production server vs. Thin or Unicorn?
... your site does something that takes time, e.g. sends e-mails or generates PDF files, you should make WEBrick multi-threaded. You want to handle multiple requests at a time.
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What's the difference between django OneToOneField and ForeignKey?
...eld(Engine)
Car2 model uses ForeignKey(Engine2, unique=True)
From within python manage.py shell execute the following:
OneToOneField Example
>>> from testapp.models import Car, Engine
>>> c = Car.objects.get(name='Audi')
>>> e = Engine.objects.get(name='Diesel')
>&g...
What's the difference between lists enclosed by square brackets and parentheses in Python?
...ove 'y=x' example , list and tuple behave in the same way now (verified in python3.8.5)
– Youjun Hu
Aug 15 at 9:11
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What is the easiest way to get current GMT time in Unix timestamp format?
Python provides different packages ( datetime , time , calendar ) as can be seen here in order to deal with time. I made a big mistake by using the following to get current GMT time time.mktime(datetime.datetime.utcnow().timetuple())
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How do I browse an old revision of a Subversion repository through the web view?
... the built-in WebDAV interface. From svnbook.red-bean.com/en/1.5/svn-book.pdf: >Can I View Older Revisions? >With an ordinary web browser? In one word: nope. At least, not with mod_dav_svn as your only tool.
– Zach Young
Mar 3 '14 at 22:53
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Get the cartesian product of a series of lists?
...
itertools.product
Available from Python 2.6.
import itertools
somelists = [
[1, 2, 3],
['a', 'b'],
[4, 5]
]
for element in itertools.product(*somelists):
print(element)
Which is the same as,
for element in itertools.product([1, 2, 3], ['a',...
Rename a dictionary key
... a new key and removing the old key is how you can achieve the "rename" in python.
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Is there a decorator to simply cache function return values?
...
Starting from Python 3.2 there is a built-in decorator:
@functools.lru_cache(maxsize=100, typed=False)
Decorator to wrap a function with a memoizing callable that saves up to the maxsize most recent calls. It can save time when an expen...
How do I write data into CSV format as string (not file)?
...
In Python 3:
>>> import io
>>> import csv
>>> output = io.StringIO()
>>> csvdata = [1,2,'a','He said "what do you mean?"',"Whoa!\nNewlines!"]
>>> writer = csv.writer(output, quoting=...