python - 使用 urllib3/requests 时出现奇怪的 "invalid syntax"错误

Question

按照其他人的建议:Given a big list of urls, what is a way to check which are active/inactive?

尝试使用 urllib3 安装请求时出现错误。

正在尝试安装请求。

C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop>setup.py install
Traceback (most recent call last):
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\setup.py", line 6, in <module>
    import requests
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\__init__.py", line 52, in <module>
    from . import utils
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\utils.py", line 22, in <module>
    from .compat import parse_http_list as _parse_list_header
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\compat.py", line 95, in <module>
    from .packages import chardet
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\packages\__init__.py", line 3, in <module>
    from . import urllib3
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\packages\urllib3\__init__.py", line 16, in <module>
    from .connectionpool import (
  File "C:\Users\yao\Desktop\My Downloads\requests-develop\requests-develop\requests\packages\urllib3\connectionpool.py", line 434
    except Empty as e:
                  ^
SyntaxError: invalid syntax

尝试使用 urllib3。

C:\Users\yao\Desktop\ad stuff\find urls>reqs.py
Traceback (most recent call last):
  File "C:\Users\yao\Desktop\ad stuff\find urls\reqs.py", line 1, in <module>
    import re, csv, urllib3
  File "build\bdist.win32\egg\urllib3\__init__.py", line 16, in <module>
  File "C:\Python25\lib\site-packages\urllib3-dev-py2.5.egg\urllib3\connectionpool.py", line 435
    except Empty as e:
                  ^
SyntaxError: invalid syntax

最近刚刚安装了 setuptools、pip、requests、urllib3。以该顺序。我是不是搞砸了什么？顺便说一句，使用 python 2.5。

Answer 1

urllib3 需要 Python 2.6 或更高版本。来自 their README :

• Tested on Python 2.6+ and Python 3.2+

他们放弃了对 Python 2.5 的支持 in version 1.2, which was released in January 2012 :

Dropped Python 2.5 support (tested on 2.6.7, 2.7.2)

Python 2.6 添加了处理异常的新语法，您可以在 What’s New in Python 2.6 中读到。 :

Alternate syntax for catching exceptions: except TypeError as exc.

urllib3 现在使用此语法，但您尝试在不支持它的 Python 2.5 上运行它。