您可能想要查看像pip这样的Python包管理器。如果您不想使用Python包管理器，您应该能够下载M2Crypto并在旧的安装上构建/编译/安装。

方法一:手动升级

pip install package_name -U

方法二:一次性升级(如果部分包升级失败，有很大概率会回退)

pip install $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1) --upgrade

方法三:循环升级

for i in  $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1); do pip install $i --upgrade; done

打开命令提示符或终端，并使用下面的语法

pip install --upgrade [package]==[specific version or latest version]

例如

pip install --upgrade numpy==1.19.1

您可能想要查看像pip这样的Python包管理器。如果您不想使用Python包管理器，您应该能够下载M2Crypto并在旧的安装上构建/编译/安装。

获取所有过时的包并使用以下命令创建一个批处理文件 命令 PIP安装XXX——升级每个过期的包

我如何从我的系统完全卸载版本0.19.1之前 安装0.20.2吗?

以卸载M2Crypto使用

pip uninstall M2Crypto

我需要下载，建立和安装最新版本的 M2Crypto包(0.20.2)。

为了安装最新版本，可以使用PyPi

pip install M2Crypto 

要安装版本20.2(过时的版本)，请运行

pip install M2Crypto==0.20.2

假设一个人只是想升级

pip install M2Crypto --upgrade # Or pip install M2Crypto -U

注:

Depending on one's Python version (here's how to find the version) one may use a different pip command. Let's say one is working with Python 3.7, instead of just using pip, one might use pip3.7. Using sudo is considered unsafe. Nowadays there are better practices to manage the development system, such as: virtual environments or development containers. The development containers allow one to put the entire development environment (be it modules, VS Code extensions, npm libraries,...) inside a Docker container. When the project comes to an end, one closes the container. There's no need to keep all of those requirements around in the computer for no reason. If you feel like reading more about it: Visual Studio Docs, Github.