Python访问MongoDB，并且转换成Dataframe，,#!/usr/bin

Python访问MongoDB，并且转换成Dataframe，,#!/usr/bin

#!/usr/bin/env python# -*- coding: utf-8 -*-# @Time    : 2018/7/13 11:10# @Author  : baoshan# @Site    : # @File    : pandans_pymongo.py# @Software: PyCharm Community Editionimport pymongoimport pandas as pddef _connect_mongo(host, port, username, password, db):    """ A util for making a connection to mongo. """    if username and password:        mongo_uri = "mongodb://%s:%[email protected]%s:%s/%s" % (username, password, host, port, db)        conn = pymongo.MongoClient(mongo_uri)    else:        conn = pymongo.MongoClient(host, port)    return conn[db]def read_mongo(db, collection, query={}, host=‘test43‘, port=27017, username=None, password=None, no_id=True):    """ Read from Mongo and Store into DataFrame. """    # Connect to MongoDB    db = _connect_mongo(host=host, port=port, username=username, password=password, db=db)    # Make a query to the specific DB and Collection    cursor = db[collection].find(query).limit(10)    # Expand the cursor and construct the DataFrame    df = pd.DataFrame(list(cursor))    df.to_csv("abc.csv", encoding="utf_8_sig")  # 处理中文乱码问题    if no_id:        del df[‘_id‘]    return dfread_mongo(db=‘service‘, collection=‘trace_log_regular‘, query={}, host=‘xxx‘, port=27017, username="xxx", password="xxx")

小结：

1. 解决了pymongo访问MongoDB的问题

2. 解决了查询的数据转成dataframe的问题

3. 解决了dataframe写入到csv的问题

4. 解决了中文乱码问题。

谢谢

【参考】https://stackoverflow.com/questions/16249736/how-to-import-data-from-mongodb-to-pandas

Python访问MongoDB，并且转换成Dataframe