Ubuntu16.04安裝Python3.8.5：

安裝編譯之后出現apt-get錯誤You might want to run 'apt-get -f install' to correct these:

The following packages have unmet dependencies:

libxml-parser-perl : Depends: libwww-perl but it is not going to be installed

printer-driver-gutenprint : Depends: cups (>= 1.3.0) but it is not going to be installed

printer-driver-splix : Depends: cups (>= 1.5.0-3~) but it is not going to be installed

python-httplib2 : Depends: ca-certificates but it is not going to be installed

python-pip : Depends: ca-certificates but it is not going to be installed

Recommends: python-dev-all (>= 2.6) but it is not installable

Recommends: python-wheel but it is not going to be installed

python-requests : Depends: ca-certificates but it is not going to be installed

python-requests-whl : Depends: ca-certificates but it is not going to be installed

python3-httplib2 : Depends: ca-certificates but it is not going to be installed

python3-requests : Depends: ca-certificates but it is not going to be installed

ruby1.9.1 : Depends: libruby1.9.1 (= 1.9.3.484-2ubuntu1.2) but it is not going to be installed

ssh-import-id : Depends: ca-certificates but it is not going to be installed

vim-gtk : Depends: libruby1.9.1 (>= 1.9.2.0) but it is not going to be installed

E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

造成這種問題的原因是因為在Ubuntu下,例如Ubuntu 14.04或者16.04一般是不會出現broken dependencies,或者出現unmet dependencies, 但是如果我們使用dpkg強制安裝了某些deb包,或者在build-dep的是否手動更改了某些Packages的文件和版本時, 那么在再次使用apt-get install或者build-dep來安裝packages的時就很可能出現上面出現過的問題。

我們可以根據提示執行下命令，如果問題照舊，那我們嘗試執行一下命令

解決辦法如下：

first stepsudo apt-get -f install

sudo apt-get update

sudo apt-get upgrade

second step

sudo apt-get update

sudo apt-get clean

sudo apt-get autoremove

third step

sudo apt --fix-broken install

sudo apt-get update && sudo apt-get upgrade

sudo dpkg --configure -a

sudo apt-get install -f

連接地址：

最后解決：

ImportError: No module named _ssl問題

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