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+# Parallel Python
+
+A lecture from ASPP 2025. The slides and exercises are in `slides/` and `exercises/`, respectively.
+
+## Lecture outline
+
+1. Processes, threads and THE GIL
+2. Hands-on investigations of embarrassingly parallel problems  
+   A. Multithreading with NumPy  
+   B. The multiprocessing package  
+   C. Blending processes and threads  
+3. Going further
+
+
+## Further resources
+
+### Asyncio
+
+A really cool example of using `asyncio` with the kitchen program is in `extras/`.
+
+### Online
+
+ * Online textbook on operating systems, processes, threads, etc.
+    * [Operating Systems: Three Easy Pieces](https://pages.cs.wisc.edu/~remzi/OSTEP/#book-chapters)
+    * Chapters 4, 13, and 26 are particularly relevant.
+    * But the whole book is interesting.
+ * Report of a talk on Python concurrency types, with focus on sub-interpreters.  
+    * [Python subinterpreters and free-threading](https://lwn.net/Articles/985041/)
+ * Comparison of multithreading, multiprocessing, and asyncio.  
+    * [Async Python: The Different Forms of Concurrency](http://masnun.rocks/2016/10/06/async-python-the-different-forms-of-concurrency/)
+    * Note the code snippets are a little outdated.
+ * Example of webscraping with asyncio
+    * [Asynchronous Web Scraping in Python - ZenRows](https://www.zenrows.com/blog/asynchronous-web-scraping-python#scrape-multiple-pages-asynchronously)
+ * Sub-interpreters in 3.12
+    * [Sub-interpreter web workers](https://tonybaloney.github.io/posts/sub-interpreter-web-workers.html )