为什么我的 Python 脚本无法识别导入模块中的 class?
Why doesn't my Python script recognize a class from an imported module?
collection.py
import sys
import os
import pymongo
from pymongo import MongoClient
class Collection():
"""returns a collection curser from mongodb"""
client = MongoClient()
def __init__(self, db, collection_name):
self.db = db
self.collection_name = collection_name
def getCollection(self):
data_base = getattr(self.client, self.db)
collObject = getattr(data_base, self.collection_name)
return collObject
main.py
import sys
import os
import collection
def main():
pass
if __name__ == '__main__':
print"Begin Main"
agents = Collection('hkpr_restore','agents')
print "agents is" , agents
这些文件在同一目录中。但是,当我 运行 main.py
时,出现错误:
Begin Main
Traceback (most recent call last):
File "main.py", line 23, in <module>
agents = Collection('hkpr_restore','agents')
NameError: name 'Collection' is not defined
根据我的阅读,如果文件在同一目录中,我需要做的就是使用 import collection
。
我是不是漏掉了什么?
您只导入了 collection
,没有导入 Collection
。
要么from collection import Collection
,要么在实例化时使用全限定名:agents = collection.Collection('hkpr_restore','agents')
.
collection.py
import sys
import os
import pymongo
from pymongo import MongoClient
class Collection():
"""returns a collection curser from mongodb"""
client = MongoClient()
def __init__(self, db, collection_name):
self.db = db
self.collection_name = collection_name
def getCollection(self):
data_base = getattr(self.client, self.db)
collObject = getattr(data_base, self.collection_name)
return collObject
main.py
import sys
import os
import collection
def main():
pass
if __name__ == '__main__':
print"Begin Main"
agents = Collection('hkpr_restore','agents')
print "agents is" , agents
这些文件在同一目录中。但是,当我 运行 main.py
时,出现错误:
Begin Main
Traceback (most recent call last):
File "main.py", line 23, in <module>
agents = Collection('hkpr_restore','agents')
NameError: name 'Collection' is not defined
根据我的阅读,如果文件在同一目录中,我需要做的就是使用 import collection
。
我是不是漏掉了什么?
您只导入了 collection
,没有导入 Collection
。
要么from collection import Collection
,要么在实例化时使用全限定名:agents = collection.Collection('hkpr_restore','agents')
.