Understand the absolute path and relative path in Python, and the absolute path in python

Understand the absolute path and relative path in Python, and the absolute path in python

This article describes the absolute path strength and relative path in Python, shares it with you, and gives yourself some notes.

1. absolute path

OS. path. abspath ("file name "):

Displays the absolute path strength of a file.

Eg:

>>> import os>>> os.chdir("E:\\PycharmProjects\\odycmdb\\odycmdb")>>> os.listdir()['settings.py', 'urls.py', 'wsgi.py', '__init__.py', '__pycache__']>>> os.path.abspath("settings.py")'E:\\PycharmProjects\\odycmdb\\odycmdb\\settings.py' 

2. Relative Path

OS. path. dirname ("file name "):

Displays the relative path of a file.

Eg:

>>> import os>>> os.chdir("E:\\PycharmProjects\\odycmdb\\odycmdb")>>> os.listdir()['settings.py', 'urls.py', 'wsgi.py', '__init__.py', '__pycache__']>>> os.path.dirname("settings.py")

3. Summary

Generally, absolute path functions and relative path functions are used together, especially before multiple file packages.

① OS. path. dirname (OS. path. abspath ("file name"): obtains the directory where the current folder is located.

Eg:

>>> import os>>> os.chdir("E:\\PycharmProjects\\odycmdb\\odycmdb")>>> os.listdir()['settings.py', 'urls.py', 'wsgi.py', '__init__.py', '__pycache__']>>> os.path.abspath("settings.py")'E:\\PycharmProjects\\odycmdb\\odycmdb\\settings.py'>>> os.path.dirname(os.path.abspath("settings.py"))'E:\\PycharmProjects\\odycmdb\\odycmdb' 

② OS. path. dirname (OS. path. dirname (OS. path. abspath ("file name"): Get the directory on the top of the current folder

Eg:

>>> import os>>> os.chdir("E:\\PycharmProjects\\odycmdb\\odycmdb")>>> os.listdir()['settings.py', 'urls.py', 'wsgi.py', '__init__.py', '__pycache__']>>> os.path.abspath("settings.py")'E:\\PycharmProjects\\odycmdb\\odycmdb\\settings.py'>>> os.path.dirname(os.path.dirname(os.path.abspath("settings.py")))'E:\\PycharmProjects\\odycmdb' 

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