lovelygood183
2021-09-04 21:43
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pandas中先判断表头为空后自定义表头

import pandas as pd
people=pd.read_excel('D:/myPython/people.xlsx',header=None)#表头为空
people.columns=['ID','TypeName','irstName','MiddleName','LastName']#定义表头
people.set_index("ID",inplace=True)#设置ID为索引
print(people.columns)
people.to_excel('D:/myPython/output.xlsx')
print('Done!')

请教各位,我按着学习教程来写的代码,目的:
提取people中的字段,判断表头为空后,定义表头,并将ID设置为索引;
最后将数据另存于output表格中,运行后报错,请各位指点下哪错了,谢谢~

--------------------报错提示------------------------------------------------------------------------------------------------
Traceback (most recent call last):
File "D:/myPython/Pandas/读取文件.py", line 15, in
people.columns=['ID','TypeName','irstName','MiddleName','LastName']#定义表头
File "C:\Users\hw\anaconda3\lib\site-packages\pandas\core\generic.py", line 5152, in setattr
return object.setattr(self, name, value)
File "pandas_libs\properties.pyx", line 66, in pandas._libs.properties.AxisProperty.set
File "C:\Users\hw\anaconda3\lib\site-packages\pandas\core\generic.py", line 564, in _set_axis
self._mgr.set_axis(axis, labels)
File "C:\Users\hw\anaconda3\lib\site-packages\pandas\core\internals\managers.py", line 226, in set_axis
raise ValueError(
ValueError: Length mismatch: Expected axis has 6 elements, new values have 5 elements

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