Python3 rabbitmq NameError问题求助

学习使用rabbitmq，遇到麻烦

python3.3.2
rabbitmq3.4.1
pika-0.9.14

python send.py

Traceback (most recent call last):
  File "send.py", line 3, in <module>
    connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
  File "/home/hawk/g/sqlalchemy/lib/python3.3/site-packages/pika/connection.py", line 361, in __init__
    if host and self._validate_host(host):
  File "/home/hawk/g/sqlalchemy/lib/python3.3/site-packages/pika/connection.py", line 207, in _validate_host
    if not isinstance(host, basestring):
NameError: global name 'basestring' is not defined
------------------------------------------------------------
python receive.py 
Traceback (most recent call last):
  File "receive.py", line 5, in <module>
    host='localhost'))
  File "/home/hawk/g/sqlalchemy/lib/python3.3/site-packages/pika/connection.py", line 361, in __init__
    if host and self._validate_host(host):
  File "/home/hawk/g/sqlalchemy/lib/python3.3/site-packages/pika/connection.py", line 207, in _validate_host
    if not isinstance(host, basestring):
NameError: global name 'basestring' is not defined

这是什么情况？

===========================
Python 3.3.2+ (default, Feb 28 2014, 00:52:16) 
[GCC 4.8.1] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pika
>>> connection = pika.BlockingConnection(pika.ConnectionParameters(
...         host='localhost'))
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/home/hawk/g/f3/lib/python3.3/site-packages/pika/connection.py", line 361, in __init__
    if host and self._validate_host(host):
  File "/home/hawk/g/f3/lib/python3.3/site-packages/pika/connection.py", line 207, in _validate_host
    if not isinstance(host, basestring):
NameError: global name 'basestring' is not defined

web开发 flask、sqlalchemy 等等都是使用python3，总不至于再回到2.7吧？

if not isinstance(host, basestring):
NameError: global name 'basestring' is not defined
说明basestring 不存在，你需要import 进来或者定义这个变量
如 a="test"
if not isinstance(a, str): #str 是类型的类型，所以不用导入，如果不是就需要导入这个类或者方法
print "不是字符串类型"
else:
print "这个是字符串类型"
python3 里已经没有basestring 类型了，你可以做转换啊。请参考这个http://woodpecker.org.cn/diveintopython3/porting-code-to-python-3-with-2to3.html

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