找到工作目录文件和文件的目录[重复]

Question

This question already has an answer here:

• How to properly determine current script directory? 13 answers
• How to know/change current directory in Python shell? 6 answers

In Python, what commands can I use to find:

1. the current directory (where I was in the terminal when I ran the Python script), and
2. where the file I am executing is?

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转载于:https://stackoverflow.com/questions/5137497/find-current-directory-and-files-directory

Answer 1

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

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To get the current working directory use

import os
cwd = os.getcwd()

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Documentation references for the modules, constants and functions used above:

• The os and os.path modules.
• The __file__ constant
• os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
• os.path.dirname(path) (returns "the directory name of pathname path")
• os.getcwd() (returns "a string representing the current working directory")
• os.chdir(path) ("change the current working directory to path")