python连接mongodb数据库，并将数据存成dataframe

首先需要有连接mongodb数据库基本信息 :

CONFIG_HOST = '11.111.11.11'

CONFIG_PORT='27017'

CONFIG_DATABASE = 'databasename'

CONFIG_USER='username'

CONFIG_PASSWORD = XXXXXX

CONFIG_TABLE = 'tablename'

 

python通过pymongo对mongodb进行访问，

提取出databasename中tablename中的colname_a,colname_b,colname_c四个字段的所有内容：

            
              import pymongo
import pandas as pd

MONGO_URI = 'mongodb://username:xxxxxx@11.111.11.11:27017/databasename'

client = pymongo.MongoClient(MONGO_URI)
mongo_db = client[databasename]
mongo_db_collection = mongo_db[tablename]

df=pd.DataFrame(list(mongo_db_collection.find({}, {'colname_a':1,'colname_b':1,'colname_c':1})))
print(df.head())