<p>尝试从Prov包导入模块时遇到此错误。
以下是我的档案内容:</p>
<pre><code>#!/usr/bin/env
import sys
egg_path='/Library/Python/2.7/site-packages/prov-1.5.0-py2.7.egg/prov'
sys.path.append(egg_path)
#... rest of code
import model as prov
def main():
# Create a new provenance document
d1 = ProvDocument() # d1 is now an empty provenance document
# Declaring namespaces for various prefixes used in the example
d1.add_namespace('now', 'http://www.provbook.org/nownews/')
d1.add_namespace('nowpeople', 'http://www.provbook.org/nownews/people/')
d1.add_namespace('bk', 'http://www.provbook.org/ns/#')
# Entity: now:employment-article-v1.html
e1 = d1.entity('now:employment-article-v1.html')
# Agent: nowpeople:Bob
d1.agent('nowpeople:Bob')
</code></pre>
<p>输出如下:</p>
<p><code>Traceback (most recent call last):
File "prov.py", line 6, in <module>
import model as prov
File "/Library/Python/2.7/site-packages/prov-1.5.0-py2.7.egg/prov/model.py", line 25, in <module>
from prov import Error, serializers
ImportError: cannot import name Error</code></p>
<p>有什么想法或解决办法吗?我用easy_install Prov安装Prov。在</p>