Absolute path strength and relative path in Python, and Python path strength

Absolute path strength and relative path in Python, and Python path strength

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'