运行python脚本时出现ImportError

Question

I have a nested python script that imports a module from another directory. When I run the nested python script as:

python dir_a/dir_b/script.py

It throws an Import Error that it is unable to load the specified module. However when I run the script as:

python -m dir_a.dir_b.script

It runs successfully. Any idea why is that?

Answer 1

-m switch adds the current directory to sys.path , which contains the modules that script.py imports, while without the -m switch dir_a/dir_b is added to sys.path instead. See python's command-line documentation .

Answer 2

You can also try following,

sys.path.insert("relative path of import_module from script.py")

import "import_module"