是否有某个Py3k专用库的索引？

Question

我很好奇是否有重要的库只支持Python 3,因为看起来许多支持它的库也恰好支持Python 2.

Answer 1

不,没有这样的索引,但您可以从PyPI上的分类器数据创建一个.

您可以列出所有包含"Programming Language :: Python :: 3"或Programming Language :: Python :: 3.0"或"Programming Language :: Python 3.1"的软件包,但不包含Python 2分类器.

http://pypi.python.org/pypi?:action=browse&c=214

可能XML接口很有用:

http://wiki.python.org/moin/PyPiXmlRpc

Answer 2

它似乎没有,所以我写了这个(有一些帮助):

#!/usr/bin/env python3

import xmlrpc.client

# PyPI classifiers for all Python 3 versions
PY3 = [
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.0",
    "Programming Language :: Python :: 3.1",
    "Programming Language :: Python :: 3.2",
    "Programming Language :: Python :: 3.3",
    "Programming Language :: Python :: 3.4",
]

# PyPI classifiers for all Python 2 versions
PY2 = [
    "Programming Language :: Python :: 2",
    "Programming Language :: Python :: 2.7",
    "Programming Language :: Python :: 2.6",
    "Programming Language :: Python :: 2.5",
    "Programming Language :: Python :: 2.4",
    "Programming Language :: Python :: 2.3",
]

def main():
    client = xmlrpc.client.ServerProxy('http://pypi.python.org/pypi')
    # name[0] is package name
    # name[1] is package version
    py3names = [
        name[0] for classifier in PY3 for name in client.browse([classifier])
    ]
    py2names = [
        name[0] for classifier in PY2 for name in client.browse([classifier])
    ]
    py3only = [name for name in py3names if name not in py2names]
    template = "Python3-only packages: {} (of {})"
    print(template.format(len(py3only), len(set(py2names + py3names))))

if __name__ == "__main__":
    main()