我是 Python 新手，我正在尝试使用 Robot Framework 自动化测试。当我尝试通过下载库时pip遇到了一些问题。我正在使用Python 3.5.1, Robot Framework 3.0, PyCharm 2016.1(64),
命令的输出pip install robotframework-selenium2library：
Collecting robotframework-selenium2library
Using cached robotframework-selenium2library-1.7.4.tar.gz
Complete output from command python setup.py egg_info:
Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.14.tar.gz
Extracting in C:\Users\Radek\AppData\Local\Temp\tmpooendh2g
Traceback (most recent call last):
File "c:\users\radek\appdata\local\programs\python\python35\lib\site-packages\ez_setup.py", line 143, in use_setuptools
raise ImportError
ImportError
在处理上述异常期间，发生了另一个异常：
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\Radek\AppData\Local\Temp\pip-build-gh4jw21a\robotframework-selenium2library\setup.py", line 8, in <module>
use_setuptools()
File "c:\users\radek\appdata\local\programs\python\python35\lib\site-packages\ez_setup.py", line 145, in use_setuptools
return _do_download(version, download_base, to_dir, download_delay)
File "c:\users\radek\appdata\local\programs\python\python35\lib\site-packages\ez_setup.py", line 125, in _do_download
_build_egg(egg, tarball, to_dir)
File "c:\users\radek\appdata\local\programs\python\python35\lib\site-packages\ez_setup.py", line 99, in _build_egg
_extractall(tar)
File "c:\users\radek\appdata\local\programs\python\python35\lib\site-packages\ez_setup.py", line 467, in _extractall
self.chown(tarinfo, dirpath)
TypeError: chown() missing 1 required positional argument: 'numeric_owner'
----------------------------------------
命令“python setup.py egg_info”在 C:\Users\Radek\AppData\Local\Temp\pip-build-gh4jw21a\robotframework-selenium2library\ 中失败，错误代码为 1
安装工具是最新的，ez_setup 也是最新的
C:\Users\Radek>pip install --upgrade setuptools
Requirement already up-to-date: setuptools in c:\users\radek\appdata\local\programs\python\python35\lib\site-packages
C:\Users\Radek>pip install ez_setup
Requirement already satisfied (use --upgrade to upgrade): ez-setup in c:\users\radek\appdata\local\programs\python\python35\lib\site-packages