我想在 Ubuntu 上安装最新的 Python tarball，从http://python.org/download/下载。
这是正确的安装方法吗？
./configure
make
make install
如果没有，我该怎么做？
我在更新时遇到了这个错误。我阅读了关于这个问题的问题和答案，但重点是签名密钥。它不返回签名密钥！
Get:1 http://archive.canonical.com lucid Release.gpg [198B]
Ign http://archive.canonical.com/ lucid/partner Translation-en_US
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Get:24 http://archive.ubuntu.com lucid-security/main Packages [380kB]
Get:25 http://archive.ubuntu.com lucid-security/restricted Packages [14B]
Get:26 http://archive.ubuntu.com lucid-security/multiverse Packages [4,556B]
Get:27 http://archive.ubuntu.com lucid-security/main Sources [118kB]
Get:28 http://archive.ubuntu.com lucid-security/restricted Sources [14B]
Get:29 http://archive.ubuntu.com lucid-security/universe Packages [125kB]
Get:30 http://archive.ubuntu.com lucid-security/universe Sources [34.5kB]
Fetched 12.8MB in 10min 33s (20.3kB/s)
Reading package lists... Done
W: GPG error: http://archive.canonical.com lucid Release: Unknown error executing gpgv
W: GPG error: http://archive.ubuntu.com lucid Release: Unknown error executing gpgv …