python和mongodb简单交互

1.安装pymongo：

pip3 install pymongo

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2.pymongo的简单用法：

# /usr/bin/env python3

import pymongo

class Mymongo(object):

    def __init__(self, host, port=27017):

        try:

            self.conn = pymongo.MongoClient(host=host, port=port)

        except Exception as e:

            print("连接失败", e)

        else:

            print('连接成功')

    def add(self, p_dict):

        res = self.conn.testdb.testcol.insert(p_dict)  # insert需要传入字典

        if res:

            print('插入成功')

    def show(self):

        res = self.conn.testdb.testcol.find()  # find()返回一个可迭代对象

        for i in res:

            print(i)

    def mod(self, before, after):   # 需要传入字典

        res = self.conn.testdb.testcol.update(before, after)

        if res:

            print("修改成功", res)

    def rem(self, p_dict):

        res = self.conn.testdb.testcol.delete_one(p_dict)

        if res:

            print('删除成功')

if __name__ == "__main__":

    mymongo = Mymongo('192.168.26.135')

    mymongo.add({"name": 'Tom'})

    mymongo.show()

    mymongo.mod({"name": 'Tom'}, {"name": 'Jerry'})

    mymongo.show()

    mymongo.rem({"name": 'Jerry'})

    mymongo.show()

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