Trey Hunner 🐍RE: https://mastodon.social/@bmispelon/116239619637209841
That's a #PythonOddity!
See spoiler reply for the explanation.
Baptiste Mispelon@treyhunner In case you've missed this one: https://hachyderm.io/@SnoopJ/116236948563024391 #PythonOddity
SnoopJ (@[email protected])
This is your periodic reminder that `0xfor....real` is a syntactically-valid AND error-free #Python program
Dan (he/him) 
Here's a #PythonOddity for you. You can use `float('nan')` as a key in a dictionary. But if you then try to access `my_dict[float('nan')]` you'll get a `KeyError`. If you assign `float('nan')` to a variable and then use that variable to set/access the dictionary that will work.
This happens because `float('nan') != float('nan')`. Even though the hashes are the same, the values are unequal and the dictionary lookup includes an equality check.
This happens because `float('nan') != float('nan')`. Even though the hashes are the same, the values are unequal and the dictionary lookup includes an equality check.
RE: https://mastodon.social/@danzin/116076832515812187
An interesting #PythonOddity that I'm surprised I haven't encountered before.
RE: https://mastodon.social/@bmispelon/116041593220352595
Test your mental model of Python's import system. 🤨
@treyhunner Tagging you on this since it might qualify as a #Pythonoddity
RE: https://mastodon.social/@carapace/115339525169475036
This one's fun!
An infinite iterable from a finite data structure? 🤔
It all works because lists can "contain" themselves.
Remember that lists don't actually contain data in Python but references to data.
In honor of today's date of September 12th, I came up with a #PythonOddity puzzle.
Can you guess the redacted module from the standard library (no pip install allowed!) such that:
from ████████ import ████, █████████
A = ████(12, 12, 12)
B = █████████(12, 12, 12, 12, 12, 12)
assert (A + B + B) != (B + B + A) # huh
assert (A + B + B) != (A + 2 * B) # this also works
Am I the only one who didn't know that #Python list comprehensions (and presumably other types of comprehensions) can accept **multiple** conditional statements at the end?
[i for i in range(30) if i%2 if i%3 if i%5]