尝试生成虚拟 DataFrame 但出现错误答案

【问题标题】：Trying to generate a dummy DataFrame but getting error尝试生成虚拟 DataFrame 但出现错误
【发布时间】：2019-02-13 17:21:16
【问题描述】：

目标：

我想生成一个虚拟数据框来测试某些功能，但我无法将我的数组传递到数据框。

情况：

我想插入第一列：dates，随后的列将是字符串或整数。

我的代码：

import pandas as pd
import numpy as np

col_names = ['Date', 'a', 'b', 'Dernier', 'Frequences', 'Total'] # 6 columns
data =[['2019-01-21',456,'dwfv84',23,74,261,4221],
['2019-02-10',123,'qwbe78',3,83,9251],
['2019-01-25',789,'adqw87',19,478,19195],
['2018-01-04',988,'afdi25',40,321,3753],
['2018-03-19',784,'asdf48',331,413,8551],
['2018-04-15',445,'asfv41',304,246,10215],
['2018-04-10',589,'sdqw88',309,80,19569],
['2018-05-20',741,'dsdg46',269,282,3108],
['2018-06-30',852,'cvgo87',228,261,5975],
['2019-01-19',963,'ewgs45',25,357,4405],
['2019-01-12',369,'fbbr54',32,197,1019],
['2019-01-18',258,'fwgs77',26,132,18100],
['2019-02-10',147,'jkyu87',3,32,8678],
['2019-02-05',753,'yukh20',8,132,19871]]

my_data= np.array(data)
datas = pd.DataFrame(data=my_data, columns=col_names)

错误信息：

ValueError: 传递的项目数错误 1，放置意味着 6

ValueError: 传递值的形状是 (1, 14)，索引意味着 (6, 14)

【问题讨论】：

data 中的第一个列表有 7 个元素，而不是 6 个，所以删除错误的元素。

标签： python pandas numpy

【解决方案1】：

从第一行删除了“74”

import pandas as pd
import numpy as np

col_names = ['Date', 'a', 'b', 'Dernier', 'Frequences', 'Total'] # 6 columns
data =[['2019-01-21',456,'dwfv84',23, 261,4221],
['2019-02-10',123,'qwbe78',3,83,9251],
['2019-01-25',789,'adqw87',19,478,19195],
['2018-01-04',988,'afdi25',40,321,3753],
['2018-03-19',784,'asdf48',331,413,8551],
['2018-04-15',445,'asfv41',304,246,10215],
['2018-04-10',589,'sdqw88',309,80,19569],
['2018-05-20',741,'dsdg46',269,282,3108],
['2018-06-30',852,'cvgo87',228,261,5975],
['2019-01-19',963,'ewgs45',25,357,4405],
['2019-01-12',369,'fbbr54',32,197,1019],
['2019-01-18',258,'fwgs77',26,132,18100],
['2019-02-10',147,'jkyu87',3,32,8678],
['2019-02-05',753,'yukh20',8,132,19871]]

my_data= np.array(data)
datas = pd.DataFrame(data=my_data, columns=col_names)

【讨论】：