查看“Python”的源代码

[[分类:编程]]
===ubuntu将默认使用python2更改为默认使用python3的方法===   
直接执行这两个命令即可： 
  
 sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100 
 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
==操作剪贴板== 
 import pyperclip 
 pyperclip.copy("写入剪贴板的内容") 
 url =pyperclip.paste() 
 linux error------- 
 Traceback (most recent call last): 
 File "/home/diao/python/qrcode.py", line 7, in <module> 
    url =pyperclip.paste() 
  File "/usr/local/lib/python3.7/dist-packages/pyperclip/__init__.py", line 640, in lazy_load_stub_paste 
    return paste() 
  File "/usr/local/lib/python3.7/dist-packages/pyperclip/__init__.py", line 303, in __call__ 
    raise PyperclipException(EXCEPT_MSG) 
 pyperclip.PyperclipException:  
    Pyperclip could not find a copy/paste mechanism for your system. 
    [https://pyperclip.readthedocs.io/en/latest/index.html#not-implemented-error For more information]
解决方法 
 sudo apt-get install xsel to install the xsel utility. 
 sudo apt-get install xclip to install the xclip utility. 
 pip install gtk to install the gtk Python module. 
 pip install PyQt4 to install the PyQt4 Python module.