我确定我做了一些愚蠢的事情，答案很简单，但我找不到它......我想在 GAE 上使用 pygal，所以我已经将整个pygal目录复制到我的lib目录中。然后，我导入它（从lib中的另一个文件）：
import pygal
现在我得到：
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 240, in Handle
handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 299, in _LoadHandler
handler, path, err = LoadObject(self._handler)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 85, in LoadObject
obj = __import__(path[0])
File "main.py", line 18, in <module>
from lib import output_lib
File "lib\output_lib.py", line 14, in <module>
import pygal
File "lib\pygal\__init__.py", line 34, in <module>
from pygal.graph.bar import Bar
ImportError: No module named pygal.graph.bar
我可以通过改变来解决这个问题
from pygal.graph.bar import Bar
在pygal/__init__.py到
from graph.bar import Bar
但这会导致错误的下一次迭代：
...
File "lib\pygal\__init__.py", line 34, in <module>
from graph.bar import Bar
File "lib\pygal\graph\bar.py", line 27, in <module>
from pygal.graph.graph import Graph
ImportError: No module named pygal.graph.graph
那么 - 这里有什么问题？