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import os
A = os.path.join(os.path.dirname(__file__), "..")
B = os.path.dirname(os.path.realpath(__file__))
C = os.path.abspath(os.path.dirname(__file__))
I usually just hard-wire these with the actual path. But there is a reason for these statements that determine path at runtime, and I would really like to understand the os.path module so that I can start using it.
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os.path.dirname(__file__) returns empty
2 answers
I want to get the path of the current directory under which a .py file is executed.
For example a simple file D: est.py with code:
import os
print os.getcwd()
print os.path.basename(__file__)
print os.path.abspath(__file__)
print os.path.dirname(__file__)
It is weird that the output is:
D:
test.py
D: est.py
EMPTY
I am expecting the same results from the getcwd() and path.dirname().
Given os.path.abspath = os.path.dirname + os.path.basename, why
os.path.dirname(__file__)
returns empty?
Answer #1
Because os.path.abspath = os.path.dirname + os.path.basename does not hold. we rather have
os.path.dirname(filename) + os.path.basename(filename) == filename
Both dirname() and basename() only split the passed filename into components without taking into account the current directory. If you want to also consider the current directory, you have to do so explicitly.
To get the dirname of the absolute path, use
os.path.dirname(os.path.abspath(__file__))
What is the difference between os.path.basename() and os.path.dirname()?
2 answers
What is the difference between os.path.basename() and os.path.dirname()?
I already searched for answers and read some links, but didn"t understand. Can anyone give a simple explanation?
Answer #1
Both functions use the os.path.split(path) function to split the pathname path into a pair; (head, tail).
The os.path.dirname(path) function returns the head of the path.
E.g.: The dirname of "/foo/bar/item" is "/foo/bar".
The os.path.basename(path) function returns the tail of the path.
E.g.: The basename of "/foo/bar/item" returns "item"
From: http://docs.python.org/3/library/os.path.html#os.path.basename
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Paris | 2023-04-01
Thanks for explaining! I was stuck with what does the __file__ variable mean/do? for some hours, finally got it done 🤗. Checked yesterday, it works!
Prague | 2023-04-01
time Python module is always a bit confusing 😭 what does the __file__ variable mean/do? is not the only problem I encountered. I am just not quite sure it is the best method
Rome | 2023-04-01
Maybe there are another answers? What what does the __file__ variable mean/do? exactly means?. I just hope that will not emerge anymore
