将Pandas DataFrame写入MySQL数据库 [英] Write Pandas DataFrame in to MySQL database

问题描述

我正在尝试使用以下代码将熊猫数据帧写入MySQL数据库.

I'm trying to write a pandas dataframe to MySQL database with following code.

import pandas as pd
import numpy as np
from pandas.io import sql
import MySQLdb

df = pd.DataFrame([[1.1, 1.1, 1.1, 2.6, 2.5, 3.4,2.6,2.6,3.4,3.4,2.6,1.1,1.1,3.3], list('AAABBBBABCBDDD'), [1.1, 1.7, 2.5, 2.6, 3.3, 3.8,4.0,4.2,4.3,4.5,4.6,4.7,4.7,4.8]]).T

db = MySQLdb.connect("192.168.56.101","nilani","123","test")
cursor = db.cursor()

cursor.execute("DROP TABLE IF EXISTS TEST")

sql = """CREATE TABLE TEST (
         ID  INT NOT NULL,
         COL1 CHAR(20),
         COL2 CHAR(20),  
         COL3 CHAR(20))"""

cursor.execute(sql)

sql.write_frame(df, con=db, name='TEST', flavor='mysql')

db.close()

我一直在引用> 问题和其他资源.无论如何，我都会收到以下错误.是什么原因?

I have been referring this question and the other resources. Any way I get following error. What will be the reason?

sql.write_frame(df, con=db, name='TEST', flavor='mysql')
AttributeError: 'str' object has no attribute 'write_frame'

推荐答案

您已经用sql = """...覆盖了from pandas.io import sql，因此sql现在是字符串，不再是保存write_frame的pandas模块>功能.

You have overwritten the from pandas.io import sql with sql = """..., so sql is now a string and no longer a pandas module which holds the write_frame function.

AttributeError: 'numpy.int64' object has no attribute 'replace'错误是由于您使用整数列标签(这是一个错误)而引起的.尝试将列标签设置为其他内容，例如:

the AttributeError: 'numpy.int64' object has no attribute 'replace' error you get is due to the fact that you use integer column labels (this is a bug). Try setting the columns labels to something else, eg:

df.columns = ['COL1', 'COL2', 'COL3']

这篇关于将Pandas DataFrame写入MySQL数据库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！