Python win32com将第一行转换为小写

Question

I wish to convert the first row of my excel file to lowercase. How do it do it:

import win32com.client
excel = win32com.client.Dispatch("Excel.Application")
excel.DisplayAlerts = False
excel.Visible=False
for i in files:
    doc = excel.Workbooks.Open(filepath+'/'+str(i))
    ws = doc.Worksheets(str(i).split(".")[0])
    ws.Rows(1).Cells.Value=lower(ws.Rows(1).Cells.Value)  #This syntax is wrong 
    ws.Rows(1).Replace("_","")
    ws.Rows(1).Replace(" ","")
    doc.Save()
    doc.Close()
    ws.Replace()

Answer 1

The reason why your failed may be Cells.Value return ((str1, str2, ... None, None, ...),) this data type.

So try to iterate the row's cell to change value

for cell in sheet.Rows(1).Cells:
    pre_value = cell.Value
    if pre_value is None:
        break
    if type(pre_value) is str:
        cell.Value = pre_value.lower()