this post was submitted on 18 Nov 2024
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Python

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[–] pnutzh4x0r@lemmy.ndlug.org 5 points 5 hours ago (2 children)

Path objects also override the / operator to join paths

This is both cool and gross... gives me C++ vibes (operator overloading abuse).

[–] Fred@programming.dev 2 points 1 hour ago

Scapy is another library where they redefined / to layer packets, such that you can write:

IP(dst="172.23.34.45") / UDP() / DNS(…)

Then Scapy has magic so that on serialisation, the UDP layer knows defaults to dport=53 if the upper layer is DNS, and it can access the lower layer to compute its checksum.

And don't forget that strings have a custom % (as in modulo) operator for formatting:

"Hello %s" %(username)

Of course in modern Python, f-strings will almost always be more convenient

[–] Diplomjodler3@lemmy.world 2 points 5 hours ago (1 children)

They could have chosen a better operator. But the functionality is fantastic. Makes working with paths so much easier. And you can even use slashes on windows paths.

[–] leds@feddit.dk 2 points 1 hour ago (1 children)

It makes the code so much more clean and readable since you're dropping multiple levels of brackets , for example

os.path.join( a, b, os.path.dirname(c))

Becomes

a / b / c.parent

I really like it

[–] Diplomjodler3@lemmy.world 2 points 1 hour ago

I always hated os.path. pathlib is just so much better.

[–] eager_eagle@lemmy.world 1 points 5 hours ago (1 children)

Nice, mypath.open() is a more semantic alternative to open(my path)

[–] joyjoy@lemm.ee 1 points 5 hours ago (1 children)

Don't forget about the helper functions mypath.read_text() and mypath.write_text(content)

[–] eager_eagle@lemmy.world 1 points 4 hours ago

that's already in the cheatsheet