#PyConUS2022 @jessejiryudavis Why should async get all the love?
Advanced control flow with thread.
Asyncio is really hip. Also twisted, tornado, curio and trio. They're all super cool.
Advanced control flow with thread.
Asyncio is really hip. Also twisted, tornado, curio and trio. They're all super cool.
#PyConUS2022 @jessejiryudavis In all these excitements, there was a message that was lost.
All of this was already with threads.
All of this was already with threads.
#PyConUS2022 @jessejiryudavis
When should you use threads or asyncio?
These are two ways to do concurrency.
Neither threads nor asyncio can use multiple CPUs
When should you use threads or asyncio?
These are two ways to do concurrency.
Neither threads nor asyncio can use multiple CPUs
#PyConUS2022 @jessejiryudavis If you really need parallelism, use multi-processing.
#PyConUS2022 @jessejiryudavis
Concurrency is dealing with events in particular order.
e.q. waiting for data on many network connections at once.
Concurrency is dealing with events in particular order.
e.q. waiting for data on many network connections at once.
#PyConUS2022 @jessejiryudavis
Is asyncio faster than threads?
Sadly no.
read calpaterson.com/async-python-i…
It is more efficient only for huge numbers of most idle connections.
Is asyncio faster than threads?
Sadly no.
read calpaterson.com/async-python-i…
It is more efficient only for huge numbers of most idle connections.
#PyConUS2022 @jessejiryudavis Asyncio is not compatible with most popular Python web frameworks.
If you want to use asyncio, you'll probably have to spend effort to rewrite your code into the compatible framework.
If you want to use asyncio, you'll probably have to spend effort to rewrite your code into the compatible framework.
#PyConUS2022 @jessejiryudavis Disagrees with @glyph that "Threads are bad".
Glyph's point was that we should use asyncio not because it was faster, but because it was less tricky.
Glyph's point was that we should use asyncio not because it was faster, but because it was less tricky.
#PyConUS2022 @jessejiryudavis
Threads: Speed
Compatibility: already compatible with popular Python web frameworks
Asyncio: more memory efficient, but less tricky.
But it doesn't have to be this way.
Threads: Speed
Compatibility: already compatible with popular Python web frameworks
Asyncio: more memory efficient, but less tricky.
But it doesn't have to be this way.
#PyConUS2022 @jessejiryudavis is now showing how to write less tricky code with threads and giving sample codes using concurrent.futures (available since Python 3.2) and Executors
Go read the slides and watch the recording!
Go read the slides and watch the recording!
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