从另一个脚本导入函数

Question

I experience 'utf-8' codec can't decode byte 0x98 in position 16: invalid start byte error while I was trying to import a function in the following way :

from Tutorials.Functions.Files import path_to_project_root

After some investigations, I found the problem was due to some additional calls on the path_to_project_root function in Tutorials.Functions.Files itself. In other words, my Tutorials.Functions.Files looks like this:

def path_to_project_root(projectName)
# The function body
return smt
path_to_project_root("myProject")

I realized that having a call to path_to_project_root("myProject") while I import it in another script is the problem, and just by commenting it out everything worked well. I am seeking the rationale behind this issue.

Answer 1

This is how Python works, python is a script language, everything you want the interpreter know must be interpreted by interpreter first.

In this case, you import some function from Files , interpreter must read and execute it.

Just think what if you do some import in path_to_project_root function, without run all statements in the file, the module you import may not work fine.