当我运行脚本时遇到一个奇怪的问题,我无法加载pymongo
,但当我运行hashbang解释器(/usr/bin/env python
)时它可用。
最初的调用import pymongo
被深深地埋在一个类中,但即使我在第1行调用它,它也会失败。
这是为什么?
以下是 python 控制台的一些输出,显示 pymongo
可用:
# /usr/bin/env python
Python 2.7.4 (default, Apr 23 2013, 14:02:51)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymongo
>>>
这是脚本的前三行
# head -n 3 ./app/app.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymongo
这是失败的:
# python ./app/app.py
Traceback (most recent call last):
File "./app/app.py", line 3, in <module>
import pymongo
ImportError: No module named pymongo
但是使用 /usr/bin/env
运行可以正常...为什么?
# /usr/bin/env python ./app/app.py
Traceback (most recent call last):
File "./app/app.py", line 37, in <module>
db = backend.flowbackend.getBackendObject(config.db_backend, config.db_host, config.db_port, config.db_user, config.db_password, config.db_name)
File "./app/../lib/backend/flowbackend.py", line 268, in getBackendObject
return MongoBackend(host, port, user, password, databaseName)
File "./app/../lib/backend/mongobackend.py", line 13, in __init__
self.connect()
File "./app/../lib/backend/mongobackend.py", line 62, in connect
self.conn = pymongo.Connection(self.host, self.port)
File "/usr/local/lib/python2.7/site-packages/pymongo/connection.py", line 220, in __init__
max_pool_size, document_class, tz_aware, _connect, **kwargs)
File "/usr/local/lib/python2.7/site-packages/pymongo/mongo_client.py", line 336, in __init__
raise ConnectionFailure(str(e))
pymongo.errors.ConnectionFailure: could not connect to 127.0.0.1:27017: [Errno 111] Connection refused
最佳答案
我对 pyserial 也有同样的问题,但就我而言,我的脚本文件的名称为 serial.py,因此当我尝试导入串行时,它无法识别我的包。我只是重命名我的文件并且工作正常。
关于python - 模块可以在控制台导入,但不能在脚本内导入,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16177939/