英文:
Importing a module from a different path in the same project
问题
以下是翻译好的部分：
我有以下的项目结构：
-项目
-src
-package1
-script1.py
-__init__.py
-package2
-script2.py
- __init__.py
-__init__.py
现在，script1.py 包含两个函数：
def my funct1():
print("Hello")
def my funct2():
// 做些什么
现在，我想在 script2.py 中运行 funct1()。我对这种操作比较陌生，因为我通常会把整个代码写在 main.py 中，就这样了。
我搜索了一下这个问题，然后在 script2.py 中写了以下代码：
from src.package1.script1 import *
funct1()
这给了我以下错误：
from src.package1.script1 import *
ModuleNotFoundError: No module named 'src'
请有人帮助我导入这个函数。我还有另一个问题，当我解决了导入错误后，我是直接在 script2.py 中调用 funct1()，还是需要做一些额外的事情，比如在 script2.py 中包含一个主函数？
英文:
I have the following project structure :
-project
-src
-package1
-script1.py
-__init__.py
-package2
-script2.py
- __init__.py
-__init__.py
Now script1.py includes two functions :
def my funct1():
print("Hello")
def my funct2():
// do something
Now I want to run funct1() in script2.py. I am new to something like that as I always write my whole code in main.py and that's it.
I have searched for this problem and I wrote the following code in script2.py :
from src.package1.script1 import *
funct1()
This gives me the following error :
from src.package1.script1 import *
ModuleNotFoundError: No module named 'src'
Somebody please help me to import the function. I have another question, when I solve the import error, do I directly call funct1() in script2.py or do I need to do something extra, like including a main function in script2.py ??
答案1
得分: 3
You can use relative imports like:
from ..package1.script1 import *
since src has its own __init__.py, it's all the same module.
This will work if calling script2 as a module, i.e.
python3 -m project.src.package2.script2
rather than
python3 project/src/package2/script2.py
In the latter case, you'll get the error ImportError: attempted relative import with no known parent package.
If this wasn't the case, i.e. package1 and package2 are separate modules, you should just add the module path to sys.path by including:
import os
import sys
current_file = __file__
src_directory_path = os.path.dirname(os.path.dirname(current_file))
sys.path.append(os.path.join(src_directory_path, "package1"))
in package2/__init__.py. Then you can call things like
import package1
For more on relative imports, see the answers to https://stackoverflow.com/questions/16981921/relative-imports-in-python-3.
英文:
You can use relative imports like:
from ..package1.script1 import * since src has it's own __init__.py it's all the same module.
This will work if calling script2 as a module, i.e.
python3 -m project.src.package2.script2
rather than
python3 project/src/package2/script2.py
In the later case you'll get the error ImportError: attempted relative import with no known parent package.
If this wasn't the case, i.e. package_1 and package2 are separate modules, you should just add the module path to sys.path by including:
import os
import sys
current file = __file__
src_directory_path = os.path.dirname(os.path.dirname(current file))
sys.path.append(os.path.join(src_directory_path, "package1"))
in package2/__init__.py. Then your call things like
import package1
For more on relative imports see the answers to https://stackoverflow.com/questions/16981921/relative-imports-in-python-3
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