A collection of wild things I stumbled across that made me go 🤩 or 🤯
NotImplemented signals to the runtime that it should ask someone else to satisfy the operation. In the expression a == b, if a.__eq__(b) returns NotImplemented, then Python tries b.__eq__(a). If b knows enough to return True or False, then the expression can succeed. If it doesn't, then the runtime will fall back to the built-in behavior (which is based on identity for == and !=)
What most people are expecting when they see super(X) is what Python gives you if you do super(X, X).
From simple dictionary with .get() method to really creative ideas like a context manager. Here's one more method
The creator of Flask doesn't due to backpressure
Split your decoration into two
def to_string(value):
return str(value)
def stringify(func):
@wraps(func)
def wrapper(*args):
return to_string(func(*args))
return wrappergit reflog
git reset --hard <sha1 of desired commit>
All NaNs are not equal. Some are butter NaNs.
>>> np.nan == np.nan
False
>>> np.nan is np.nan
True
>>> np.nan in [np.nan]
True