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--- python [2025/08/30 08:58] – carl
+++ python [2026/01/12 10:13] (current) – carl
@@ Line 36: / Line 36: @@
+Multiprocessing skips the ''atexit'' hooks, meaning it's not possible to do process-wide cleanup work.  They are silently skipped.
+==== Problems with Descriptors ====
+Evaluation order matters.  For example:
+<code python>
+a: Descriptor
+b: Descriptor
+foo(a, b)
+</code>
+In this, if a or b have side-effects on evaluation, like throwing an exception, the order in which a and b are invoked matters.
+==== Futures ====
+  * Futures don't have a getstate() method.  This means trying to find out the running/finished/cancel/pending states of a future are racy.   The lock (condition) on the future is also private, so it's not safe to lock and query each of the state methods.