我使用以下代码使用 win32com.client 将我现有的数据帧复制到 excel 工作表中。 下面是代码
import win32com.client as win32,sys
import pandas as pd
excel_application = win32.Dispatch("Excel.Application")
excel_application.Visible = True
lta_df = pd.read_excel("C:/Temp/temp_lta.xlsx",sheetname=0,
header=0,na_filter=False)
lta_df["Updated"] = pd.to_datetime(lta_df["Updated"])
workbook = excel_application.Workbooks.Open("C:/Temp/temp_lta.xlsx")
ws= workbook.Sheets.Add(After=workbook.Sheets(workbook.Sheets.count))
start_row= 1
start_col = 5
lta_df= lta_df.reset_index()
ws.Range(ws.Cells(start_row,start_col),
ws.Cells(start_row+len(lta_df.index)-1,start_col+len(lta_df.columns))
).Value = lta_df.to_records(index=False)
当我使用 to_records(( 时出现以下错误
Traceback (most recent call last):
File "<ipython-input-779-91e88023cb75>", line 3, in <module>
).Value = lta_df.to_records(index=False)
File "C:anaconda3libsite-packageswin32comclientdynamic.py", line 565, in __setattr__
self._oleobj_.Invoke(entry.dispid, 0, invoke_type, 0, value)
TypeError: Internal error - the buffer length is not the sequence length!
有什么解决方案。所有值均以 str 为单位当我使用
start_row = 1
start_col = 1
arr_temp = lta_df.values.copy(order="C")
ws.Range(ws.Cells(start_row,start_col),
ws.Cells(start_row+len(lta_df.index)-1,start_col+len(lta_df.columns))
).Value = arr_temp
出现
那样 此错误是因为 win32 不理解您的数据类型(要么是 pd。数据帧或 np.ndarray(。我这样做的方式是
# first by converting dataframe to contiguous array
# this is needed because array has to be C_CONTIGUOUS in order to
# write it using win32com
# you can check whether your array is contiguous by using .flags method
lta_df2 = np.ascontiguousarray(lta_df)
# second step is to convert the array to list
lta_df3 = lta_df2.tolist()
# now you can write lta_df3 to excel using win32com
start_row = 1
start_col = 1
ws.Range(ws.Cells(start_row,start_col),
ws.Cells(start_row+len(lta_df.index)-1,start_col+len(lta_df.columns))
).Value = lta_df3
另外,我建议您添加python和pandas标签
同样#2,您可能想从len(lta_df.columns)
中减去1,就像您为start_row+len(lta_df.index)-1
所做的