python3安装builtwith

>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 43
    except Exception, e:
                    ^
SyntaxError: invalid syntax
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 44
    print 'Error:', e
                 ^
SyntaxError: Missing parentheses in call to 'print'
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 44
    print() 'Error:', e
                   ^
SyntaxError: invalid syntax
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 44
    print 'Error:', e
                 ^
SyntaxError: Missing parentheses in call to 'print'
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 138
    print '%s: %s' % result
                 ^
SyntaxError: Missing parentheses in call to 'print'
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 140
    print 'Usage: %s url1 [url2 url3 ...]' % sys.argv[0]
                                         ^
SyntaxError: Missing parentheses in call to 'print'
>>> import builtwith
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/python3/lib/python3.5/site-packages/builtwith/__init__.py", line 5, in <module>
    import urllib2
ImportError: No module named 'urllib2'

因为Python2中的Exception,e 的写法不再支持，需要修改成Exception as e.

(这句话看了我半天， 明明说是抛出了Exception e, 却硬是没看到e的信息，火大！)

另外Python2中的print语句在Python3中需要写成print(),按照错误提示修改对应行数即可。

语法问题修改之后，会报一个没有安装urllib2的包的错误。

通过pip install  urllib2也会提示找不到包。

这是因为builtwith依赖于urllib2包。但Pyhton2中的urllib2工具包，在Python3中分拆成了urllib.request和urllib.error两个包。就导致找不到包，同时也没办法安装。

所以需要install urllib.request和install urllib.error 两个包，然后将builtwith包中的import urllib2修改为import urllib.request 和import urllib.error。

同时代码中的方法函数也需要修改，基本就是将urllib2.xxx修改为urllib.request.xxx。

urllib2修改后对应的函数列表见：https://docs.python.org/2/library/urllib2.html。