报错代码：

import pandas as pd

pd1 = pd.read_csv('D:/python34/program/wx_chat_single/qq_single.csv')

报错内容：

D:\python34\python.exe D:/python34/program/wx_chat_single/t1.py

sys:1: DtypeWarning: Columns (18) have mixed types. Specify dtype option on import or set low_memory=False.

Process finished with exit code 0

解决方案：

import pandas as pd

pd1 = pd.read_csv('D:/python34/program/wx_chat_single/qq_single.csv', low_memory=False)

from: https://blog.csdn.net/u010212101/article/details/78017924

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