获取使用Pymongo

Question

我想要一个集合中的所有文档编写一个函数来MongoDB中返回包含在mycollection的所有文件

from pymongo import MongoClient 

if __name__ == '__main__': 
    client = MongoClient("localhost", 27017, maxPoolSize=50) 
    db=client.mydatabase 
    collection=db['mycollection'] 
    cursor = collection.find({}) 
    for document in cursor: 
     print(document) 

然而，在函数返回：Process finished with exit code 0

Answer 1

下面是示例代码当您从命令提示符运行时，它工作正常。

from pymongo import MongoClient 

if __name__ == '__main__': 
    client = MongoClient("localhost", 27017, maxPoolSize=50) 
    db = client.localhost 
    collection = db['chain'] 
    cursor = collection.find({}) 
    for document in cursor: 
      print(document) 

请检查集合名称。