PyCharm错误：kivy.garden.knob导入成功但在Script上没有激活

Question

我已经尝试连续运行https://github.com/kivy-garden/garden.knob“example.kv”文件和“example.py”文件。为了将旋钮实现到我的项目中。不幸的是，由于导入的旋钮文件在我的python脚本中不活动，我无法运行上面的示例代码。

编辑：安装virtualenv并激活脚本后，我正在运行python脚本识别导入文件，但给我以下错误？

错误：

"C:\Program Files (x86)\Python37-32\python.exe" C:/Users/karannchat/PycharmProjects/knob/main.py 
[INFO   ] [Logger     ] Record log in C:\Users\karannchat\.kivy\logs\kivy_19-03-13_19.txt 
[INFO   ] [Kivy        ] v1.10.1 
[INFO   ] [Python      ] v3.7.2 (tags/v3.7.2:9a3ffc0492, Dec 23 2018, 22:20:52) [MSC v.1916 32 bit (Intel)] 
[INFO   ] [Factory     ] 194 symbols loaded  

Traceback (most recent call last):    
   File "C:/Users/karannchat/PycharmProjects/knob/main.py", line 3, in <module>
         from kivy.garden.knob import  Knob     
   File "<frozen importlib._bootstrap>", line 983, in _find_and_load    
   File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked    
   File "<frozen importlib._bootstrap>", line 668, in _load_unlocked    
   File "<frozen importlib._bootstrap>", line 640, in
    _load_backward_compatible  KeyError: 'kivy.garden.knob'

---

<Main>
GridLayout:
    pos: root.pos
    size: root.size
    cols: 3
    spacing: 100
    padding: 50

    Knob:
        min:4
        max:5
        size: 200, 200
        value: 0
        show_marker: True
        knobimg_source: "img/knob_metal.png"
        show_marker: False

    Knob:
        size: 200, 200
        value: 0
        show_marker: True
        knobimg_source: "img/knob_metal.png"
        marker_img: "img/bline.png"
        markeroff_color: 0.3, 0.3, .3, 1

    Knob:
        size: 200, 200
        value: 0
        show_marker: True
        knobimg_source: ""
        knobimg_color: 0, 0, 0, 0
        marker_img: "img/bline.png"
        markeroff_color: 0, 0, 0, 0
        marker_inner_color: 0, 0, 0, 1

    Knob:
        size: 200, 200
        value: 0
        show_marker: True
        knobimg_source: "img/knob_metal.png"
        marker_img: "img/bline.png"
        markeroff_color: 0.0, 0.0, .0, 1
        knobimg_size: 0.7

    Knob:
        size: 200, 200
        step: 25
        value: 10
        show_marker: True
        knobimg_source: "img/knob_metal.png"
        marker_img: "img/bline2.png"
        markeroff_img: "img/bline2_off.png"
        markeroff_color: 0.3, 0.3, .3, 1
        marker_ahead: 6
        knobimg_size: 0.8
        marker_startangle: 6

    Knob:
        size: 200, 200
        value: 0
        knobimg_source: "img/knob_black.png"
        markeroff_color: 0.0, 0.0, .0, 1
        knobimg_size: 0.9
        marker_img: "img/bline3.png"

---

from kivy.base  import  runTouchApp
from kivy.lang  import  Builder
from kivy.garden.knob import  Knob # <<---- this is not active in the code hence i can't run the code 

# LOAD KV UIX
runTouchApp(Builder.load_file('main.kv'))

Answer 1

Problem

也许缺少一个文件夹，__pycache__和一个模块，例如__init__.cpython-37在文件夹中，Windows 10：C:\Users\usr\.kivy\garden\garden.knob（用您的用户名替换usr）或Xubuntu / Linux：~/.kivy/garden/garden.knob。

Solution

Windows 10

1. 列出在命令提示符或Windows Powershell中使用garden list安装的所有园林包。
2. cd Users\usr\.kivy\garden\garden.knob
3. python -m py_compile __init__.py应该创建丢失的文件夹和模块。

Xubuntu / Linux

1. 列出在终端仿真器上使用garden list安装的所有园林包。
2. cd ~/.kivy/garden/garden.knob
3. python3 -m py_compile __init__.py应该创建丢失的文件夹和模块。

退出并重新启动PyCharm IDE。

Example

使用PyCharm Community Edition 2018.3.5在以下环境中运行Kivy garden.knob没问题：

• Xubuntu 18.04 Bionic Beaver，Kivy 1.10.1和1.11.0-dev，Python 3.6和Python 2
• Windows 10 Home，Kivy 1.10.1和Python 3.7.2

Output