為什麼 pip installturtle(graphics) 出錯

Question

安裝時出現以下錯誤turtle，我該怎麼辦？

$ sudo pip install turtle --proxy http://10.144.1.10:8080
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip install --user` instead.
Collecting turtle
  Using cached https://files.pythonhosted.org/packages/ff/f0/21a42e9e424d24bdd0e509d5ed3c7dfb8f47d962d9c044dba903b0b4a26f/turtle-0.0.2.tar.gz
    ERROR: Complete output from command python setup.py egg_info:
    ERROR: Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-smo98rwf/turtle/setup.py", line 40
        except ValueError, ve:
                         ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-smo98rwf/turtle/

我使用的是 Fedora 31，pip 版本：

$ pip --version
pip 19.1.1 from /usr/lib/python3.7/site-packages/pip (python 3.7)

其他一些Python庫可以成功安裝，例如：

$ sudo pip install scipy --proxy http://10.144.1.10:8080
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip install --user` instead.
Collecting scipy
  Downloading https://files.pythonhosted.org/packages/37/9d/a606dc7b17ef0b7326afd128e132b7a483d5611da603334842df75d92d3c/scipy-1.4.0-cp37-cp37m-manylinux1_x86_64.whl (26.1MB)
     |████████████████████████████████| 26.1MB 824kB/s 
Requirement already satisfied: numpy>=1.13.3 in /usr/local/lib64/python3.7/site-packages (from scipy) (1.17.4)
Installing collected packages: scipy
Successfully installed scipy-1.4.0

順便說一句，海龜似乎沒有安裝在我的蟒蛇中...

$ python
Python 3.7.5 (default, Dec 15 2019, 17:54:26) 
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import turtle
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'turtle'
>>> 

概括：

turtle graphics是python3標準函式庫的一部分，無需安裝。如果import turtle顯示類似「沒有名為...的模組」的錯誤，可以透過以下方式解決：例如在 Fedora 中，sudo dnf install python3-tkinter

Answer 1

海龜圖形已經包含在Python標準庫中。

還要安裝python3-tkinter來自預設 Fedora 儲存庫的軟體包。 python3-tkinter 是一個使用 Tk 使用 Python 3.x 編寫便攜式 GUI 應用程式的模組。然後嘗試運行此 Python 程式碼來繪製圓。

import turtle

t = turtle.Turtle()
t.circle(50)

您嘗試安裝的軟體套件sudo pip install turtle是 HTTP 代理軟體套件。它不是適合 Turtle 圖形的包。