問題描述

我已經開始學習python并編寫一個練習應用程序.目錄結構看起來像

I have started to learn python and writing a practice app. The directory structure looks like

src
 |
 --ShutterDeck
    |
    --Helper
       |
       --User.py -> class User
    --Controller
       |
       --User.py -> class User

src 目錄位于 PYTHONPATH 中.在另一個文件中，比如說 main.py，我想訪問兩個 User 類.我該怎么做.

The src directory is in PYTHONPATH. In a different file, lets say main.py, I want to access both User classes. How can I do it.

我嘗試使用以下方法，但失敗了:

I tried using the following but it fails:

import cherrypy
from ShutterDeck.Controller import User
from ShutterDeck.Helper import User

class Root:
  @cherrypy.expose
  def index(self):
    return 'Hello World'

u1=User.User()
u2=User.User()

這肯定是模棱兩可的.我能想到的另一種(c++ 實現方式)方式是

That's certainly ambiguous. The other (c++ way of doing it) way that I can think of is

import cherrypy
from ShutterDeck import Controller
from ShutterDeck import Helper

class Root:

  @cherrypy.expose
  def index(self):
    return 'Hello World'

u1=Controller.User.User()
u2=Helper.User.User()

但是當上面的腳本運行時，它給出了以下錯誤

But when above script is run, it gives the following error

u1=Controller.User.User()
AttributeError: 'module' object has no attribute 'User'

我無法弄清楚為什么會出錯?ShutterDeck、Helper 和 Controller 目錄中有 __init__.py.

I'm not able to figure out why is it erroring out? The directories ShutterDeck, Helper and Controller have __init__.py in them.

推薦答案

您要導入包 __init__.py 文件中的 User 模塊，使其可用作屬性.

You want to import the User modules in the package __init__.py files to make them available as attributes.

所以在 Helper/__init_.py 和 Controller/__init__.py 中添加:

So in both Helper/__init_.py and Controller/__init__.py add:

from . import User

這使模塊成為包的屬性，您現在可以這樣引用它.

This makes the module an attribute of the package and you can now refer to it as such.

或者，您必須自己完整導入模塊:

Alternatively, you'd have to import the modules themselves in full:

import ShutterDeck.Controller.User
import ShutterDeck.Helper.User

u1=ShutterDeck.Controller.User.User()
u2=ShutterDeck.Helper.User.User()

所以用他們的全名來稱呼他們.

so refer to them with their full names.

另一種選擇是使用 as 重命名導入的名稱:

Another option is to rename the imported name with as:

from ShutterDeck.Controller import User as ControllerUser
from ShutterDeck.Helper import User as HelperUser

u1 = ControllerUser.User()
u2 = HelperUser.User()

這篇關于python:不同包下同名的兩個模塊和類的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！