Advanced Python Features
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Advanced Python Features
1–10 of 183 posts
Re: Advanced Python Features
#2TFA's use-case for for/else does not convince me:
for server in servers:
if server.check_availability():
primary_server = server
break
else:
primary_server = backup_server
deploy_application(primary_server)
primary_server = backup_server
for server in servers:
if server.check_availability():
primary_server = server
break
deploy_application(primary_server)Re: Advanced Python Features
#3TFA's use-case for for/else does not convince me: for server in servers: if server.check_availability(): primary_server = server break else: primary_server = backup_server deploy_application(primary_server) As it is shorter to do this: primary_server = backup_server for server in servers: if server.check_availability(): primary_server = server break deploy_application(primary_server)
I would say that the main benefit of for/else is readability and ease of writing since nothing needs to be front-loaded. (The downside is an arguably redundant addition to the basic syntax, of course.)
Re: Advanced Python Features
#4TFA's use-case for for/else does not convince me: for server in servers: if server.check_availability(): primary_server = server break else: primary_server = backup_server deploy_application(primary_server) As it is shorter to do this: primary_server = backup_server for server in servers: if server.check_availability(): primary_server = server break deploy_application(primary_server)
If you replace the assignment in the else clause with something side-effectful it does make sense. But even then it harms the readability of the code to such a ridiculous extent. I've never not regretted adding an else clause to a for loop. Any cognitive benefits from Python's approach to for loops closely mirroring natural language just go out the window.
Re: Advanced Python Features
#5The way the language is evolving, it seems likely to me that people in the applications camp (ML, simple web-dev, etc.) will soon need a "simple Python" fork or at least an agreed-upon subset of the language that doesn't have most of these complications (f-strings are a major success, though).
Re: Advanced Python Features
#6The way the language is evolving, it seems likely to me that people in the applications camp (ML, simple web-dev, etc.) will soon need a "simple Python" fork or at least an agreed-upon subset of the language that doesn't have most of these complications (f-strings are a major success, though).
The only newish thing on this list appears to be structural pattern matching. Other than that it's all typing stuff which is all optional.
Re: Advanced Python Features
#7TFA's use-case for for/else does not convince me: for server in servers: if server.check_availability(): primary_server = server break else: primary_server = backup_server deploy_application(primary_server) As it is shorter to do this: primary_server = backup_server for server in servers: if server.check_availability(): primary_server = server break deploy_application(primary_server)
I do like the else clause with for loops. However most people are not familiar with it, and also `else:` as a keyword is confusing. I always remember it as `no break:`.
Re: Advanced Python Features
#8Here is another one, list and expression comprehensions shared with ML languages (not that AI one), apparently many aren't aware of them.
The itertools package.
Re: Advanced Python Features
#9I would argue that most of these features (basically everything except metaclasses) are not advanced features. These are simple, but for some reason less well known or less used features.
Metaclasses are however quite complex (or at least lead to complex behavior) and I mostly avoid them for this reason.
And 'Proxy Properties' are not really a feature at all. Just a specific usage of dunder methods.
Re: Advanced Python Features
#10This is all fun and games unless you have to debug someone elses code and they use a new feature that you didnt know about.
Speaking for myself, I would be glad if there were a python_light version of the interpreter that has a simple syntax only like the early 3.x versions.
just my 2 ct