找不到glob 'Python-3.7.0‘的任何软件包

Question

在Ubuntu16.04中安装Python3.7时，我收到了一条E: Couldn't find any package by glob 'Python-3.7.0'错误消息

ns3@ns3-virtual-machine:~$ sudo apt install Python-3.7.0
Reading package lists... Done
Building dependency tree       
Reading state information... Done 
E: Unable to locate package Python-3.7.0
E: Couldn't find any package by glob 'Python-3.7.0'
E: Couldn't find any package by regex 'Python-3.7.0'

ns3@ns3-virtual-machine:~$ sudo apt install Python-3.7
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package Python-3.7
E: Couldn't find any package by glob 'Python-3.7'
E: Couldn't find any package by regex 'Python-3.7'
ns3@ns3-virtual-machine:~$ sudo apt install python3
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3 is already the newest version (3.5.1-3).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
ns3@ns3-virtual-machine:~$ python --version
Python 2.7.12
ns3@ns3-virtual-machine:~$ apt policy python-3.7
N: Unable to locate package python-3.7
N: Couldn't find any package by glob 'python-3.7'
N: Couldn't find any package by regex 'python-3.7
ns3@ns3-virtual-machine:~$ 

Answer 1

在Ubuntu 16.04中，打开终端并键入：

sudo add-apt-repository ppa:deadsnakes/ppa   
sudo apt-get update   
sudo apt install python3.7    

或者，您也可以使用以下命令在Ubuntu16.04中安装Python3.8：

sudo add-apt-repository ppa:deadsnakes/ppa   
sudo apt-get update   
sudo apt install python3.8  

类似地，您可以从ppa中安装Python3.9 :死蛇/ppa在Ubuntu18.04、20.04和22.04中。

要显示Python3.7版本，请运行以下命令：

python3.7 -V

要启动Python3.7解释器，请运行以下命令：

python3.7  

要退出Python3.x解释器，请运行以下命令：

exit