Writing better tests is a lifelong pursuit, apparently.
One thing I've been noticing lately, especially while doing code reviews, is that we are usually thinking about how do I know the code worked.
Great! But we are usually not thinking ahead about what am I going to do when the …
Here's a quick hack to help when you're lost in a too-large Python inheritance tree. What class provides the most specific implementation of a method or attribute?
def find(cls, name):
for sup in cls.mro():
if name in sup.__dict__:
return sup.__name__
return None
def find_all_vars(cls):
for …Thread locals are an interesting idea: a way to give each thread its own storage, useful for global state that you don't want to share between threads.
The obvious caveat is that threadlocals are still effectively global (for the current thread), and like all global state, should be treated with …
It seems clean and safe 99% of the time.
And then you have that one accident...
In the spirit of "Falsehoods Programmers Believe" (my favorite is probably "Falsehoods Programmers Believe About Time"), I offer this, about working with third-party REST APIs.
"Believe" is a bit of a strong word here. Beliefs are deep things that are resistant to change. These are more like assumptions or wishes …
Does this return all the data?
urllib2.urlopen(url).read()
The answer appears to be "not always".
http://stackoverflow.com/questions/7174927/when-does-socket-recvrecv-size-return https://github.com/CVL-dev/feedparser/issues/1
I can't seem to get a definitive answer here, nor a reproducible demonstration of it failing.
Does anybody know for …