python - os.path.getsize(path) or os.stat -
this question has answer here:
what different between os.path.getsize(path) , os.stat? 1 best used in python 3? , when use them? , why have 2 same solution? found this answer couldn't understand quote means:
from this, seems pretty clear there no reason expect 2 approaches behave differently (except perhaps due different structures of loops in code)
specifically why have 2 approach , there different?
stat posix system call (available on linux, unix , windows) returns bunch of information (size, type, protection bits...)
python has call @ point size, there's no system call only size.
so they're same performance-wise (maybe faster stat that's 1 more function call not i/o related). it's os.path.getsize simpler write.
that said, able call os.path.getsize have make sure path file. when called on directory, getsize returns value (tested on windows) related size of node, have use os.path.isfile first: call os.stat.
in end, if want maximize performance, have use os.stat, check infos see if path file, use st_size information. way you're calling stat once.
if you're using os.walk scan directory, you're exposed more hidden stat calls, os.scandir (python 3.5).
related: faster way find large files python?
Comments
Post a Comment