我正在尝试将一系列 Excel 文件与 Pandas 连接起来。我创建了一个 for 循环来读取所提供目录的所有文件，并在我想要读取的列旁边指定了工作表名称。读取这些文件后，我将它们连接为一个 DataFrame 变量，我将其命名为“list_of_df”。
我已经测试了我的代码，直到它们被连接起来，一旦我开始连接各种 Excel 工作表，我就可以看到错误被初始化。目前我收到错误“文件不是 zip 文件”
import pandas as pd
import glob
df = []
list_of_df = pd.DataFrame()
for filename in all_files:
df = pd.read_excel(filename,
sheet_name = 'cycle',
usecols=['Chg. Cap.(mAh)','DChg. Cap.(mAh)'],
engine = 'openpyxl')
list_of_df = pd.concat([list_of_df. df], ignore_index = True)
print(list_of_df)
with pd.ExcelWriter('output3.xlsx', engine = 'openpyxl', mode = 'a',) as writer:
df.to_excel(writer, sheet_name = 'output3')
这是引发的错误：
Traceback (most recent call last):
File ~\AppData\Local\anaconda3\Lib\site-packages\spyder_kernels\py3compat.py:356 in compat_exec
exec(code, globals, locals)
File c:\documents\python scripts\chg._and_dchg._curves_for_excel5.py:30
df = pd.read_excel(filename, sheet_name = 'cycle', usecols=['Chg. Cap.(mAh)','DChg. Cap.(mAh)'], engine = 'openpyxl')
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\util\_decorators.py:211 in wrapper
return func(*args, **kwargs)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\util\_decorators.py:331 in wrapper
return func(*args, **kwargs)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\io\excel\_base.py:482 in read_excel
io = ExcelFile(io, storage_options=storage_options, engine=engine)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\io\excel\_base.py:1695 in __init__
self._reader = self._engines[engine](self._io, storage_options=storage_options)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\io\excel\_openpyxl.py:557 in __init__
super().__init__(filepath_or_buffer, storage_options=storage_options)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\io\excel\_base.py:545 in __init__
self.book = self.load_workbook(self.handles.handle)
File ~\AppData\Local\anaconda3\Lib\site-packages\pandas\io\excel\_openpyxl.py:568 in load_workbook
return load_workbook(
File ~\AppData\Local\anaconda3\Lib\site-packages\openpyxl\reader\excel.py:315 in load_workbook
reader = ExcelReader(filename, read_only, keep_vba,
File ~\AppData\Local\anaconda3\Lib\site-packages\openpyxl\reader\excel.py:124 in __init__
self.archive = _validate_archive(fn)
File ~\AppData\Local\anaconda3\Lib\site-packages\openpyxl\reader\excel.py:96 in _validate_archive
archive = ZipFile(filename, 'r')
File ~\AppData\Local\anaconda3\Lib\zipfile.py:1302 in __init__
self._RealGetContents()
File ~\AppData\Local\anaconda3\Lib\zipfile.py:1369 in _RealGetContents
raise BadZipFile("File is not a zip file")
BadZipFile: File is not a zip file
总结评论的价值：
df = pd.read_excel(filename, sheet_name = 'cycle', usecols=['Chg. Cap.(mAh)','DChg. Cap.(mAh)'], engine = 'openpyx)的读取，而不是连接后的写入，正如您似乎相信的那样。
基于此，将这篇文章变成一篇有用的文章，对您和现在/未来遇到同样问题的人来说，