Python: Referencing and assignment in inner functions
这一篇的内容在 Digest of Fluent Python: 7.4 Variable Scope Rules 和 Python: Variable scope in if-statement 都有讲到，但是 Effective Python 的 Item 15: Know How Closures Inte...
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Python: for-else with break
Python Tips: 19. For - Else:
Python: Diamond Inheritance and super
参 Effective Python Item 25: Initialize Parent Classes with super。
Python 3: Keyword-Only Arguments
参 Effective Python Item 21: Enforce Clarity with Keyword-Only Arguments 和 PEP 3102 – Keyword-Only Arguments。
Pandas: Accessing the index of a row in an apply function
You CANNOT access each row’s index via lambda x: x.index in DataFrame.apply(axis=1) because apply treats each row as a numpy object, not a Series. However yo...
SemiBoost
The inconsistency among the unlabeled examples:
Python: Put simply, generators are special coroutines
next(coro) == coro.send(None)
Python: Yes, coroutines are complicated, but they can be used as simply as generators
The fact is that we often take the .send() sematics of coroutines too seriosly that we simply ignore the possibility to use them just like generators.
Python: IDLE won’t display anything for an expression evaluated to None
This is trivial but sometimes misleading.