python __import__文件夹中的所有文件不起作用

Question

from os import listdir
modo= [name.split(".py")[0] for name in listdir("scripts") if name.endswith(".py")]
modules = {}
for modu in modo:
    modules[modu] = __import__(modu)
test_samp.function("test") 

Hello! If, say "test_samp.py" exists in the scripts directory, why does this not allow me to run test_samp.function("test")? It returns:

Unhandled exception in thread started by <function function at 0x8e39204>
Traceback (most recent call last):
  File "test_this.py", line 6, in function
    test_samp.function("test")  
NameError: global name 'test_samp' is not defined

Answer 1

You have two problems in your code:

• __import__ doesn't import into global namespace, it returns a module
• you're trying to import test_samp while it's scripts.test_samp

What you actually want is:

scripts = __import__("scripts", fromlist=modo)
scripts.test_samp.function("test") 

Above __import__ returns scripts package with all the sub-modules loaded. Don't forget to make scripts directory a package by creating __init__.py in it.

See also: Why does Python's __import__ require fromlist?

Answer 2

Your are not defining test_samp you are defining modules['test_samp'] . Plus if it's in scripts you need to import scripts.test_samp

in yor case use a package.Add an empty (or not) __init__.py (with 2 underscores). and use import scripts . Access your function with scripts.test_samp.function("test") . And you could use reload(scripts) to reload all of the package.

Answer 3

您可以使用以下命令运行它：

modules["test_samp"].function("test")