python怎么改错误代码_【新人求助】py大神们求看，一段简单代码出错，不知道如何修改...-优快云博客

本文介绍了一个关于使用numpy加载CSV文件时遇到的问题，具体是在将日期字符串转换为星期数的过程中出现了AttributeError异常。文章详细展示了出现问题的代码片段，并提供了完整的错误追踪信息。

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版本是：3.7.0

代码是：

import numpy as np

from datetime import datetime

def datestr2num(s):

return datetime.datetime.strptime(s,'%d-%m-%Y').date().weekday()

dates,close=np.loadtxt('data.csv',delimiter=',',usecols=(1,6),converters={1:datestr2num},unpack=True)

print("Dates = ",dates)

但是出现报错：

Traceback (most recent call last):

File "C:\Users\Administrator\Desktop\pythons\numpy\date.py", line 7, in

(dates,close)=np.loadtxt('data.csv',delimiter=',',usecols=(1,6),converters={1:datestr2num},unpack=True)

File "C:\Users\Administrator\AppData\Roaming\Python\Python37\site-packages\numpy\lib\npyio.py", line 1101, in loadtxt

for x in read_data(_loadtxt_chunksize):

File "C:\Users\Administrator\AppData\Roaming\Python\Python37\site-packages\numpy\lib\npyio.py", line 1028, in read_data

items = [conv(val) for (conv, val) in zip(converters, vals)]

File "C:\Users\Administrator\AppData\Roaming\Python\Python37\site-packages\numpy\lib\npyio.py", line 1028, in

items = [conv(val) for (conv, val) in zip(converters, vals)]

File "C:\Users\Administrator\AppData\Roaming\Python\Python37\site-packages\numpy\lib\npyio.py", line 1087, in tobytes_first

return conv(x.encode("latin1"))

File "C:\Users\Administrator\Desktop\pythons\numpy\date.py", line 5, in datestr2num

return datetime.datetime.strptime(s,'%d-%m-%Y').date().weekday()

AttributeError: type object 'datetime.datetime' has no attribute 'datetime'

不知道哪里出了问题