在Windows机器上安装机器人框架时出错

Question

我正在尝试在我的Windows 10机器上安装机器人框架，但我遇到了错误。

C:\WINDOWS\system32>pip install robotframework
Traceback (most recent call last):
  File "C:\Python27\Scripts\pip-script.py", line 5, in <module>
    from pkg_resources import load_entry_point
  File "build\bdist.win32\egg\pkg_resources\__init__.py", line 36, in <module>
  File "C:\Python27\lib\email\parser.py", line 12, in <module>
    from email.feedparser import FeedParser
  File "C:\Python27\lib\email\feedparser.py", line 27, in <module>
    from email import message
  File "C:\Python27\lib\email\message.py", line 16, in <module>
    import email.charset
  File "C:\Python27\lib\email\charset.py", line 13, in <module>
    import email.base64mimeenter code here
  File "C:\Python27\lib\email\base64mime.py", line 40, in <module>
    from email.utils import fix_eols
  File "C:\Python27\lib\email\utils.py", line 32, in <module>
    from email._parseaddr import quote
  File "C:\Python27\lib\email\_parseaddr.py", line 16, in <module>
    import time, calendar
  File "C:\Python27\Scripts\calendar.py", line 9, in <module>
    cal=calendar.month(str(year),str(month))
TypeError: 'int' object is not callable

我在开始安装机器人框架之前安装了python 2.7.14。 请建议前进的方向。