python excel寫入 openpyxls

xlsx_file = "test.xlsx"
wb = openpyxl.Workbook(xlsx_file)
ws = wb.active
ws["A1"]="hello world"
ws["A2"]="this is test"

• 上種方法 寫入文件，會覆蓋打開前的內容

xlsx_file = "test.xlsx"
wb = openpyxl.load_workbook(xlsx_file)
ws = wb.active
ws["A1"]="hello world"
ws["A2"]="this is test"

• 這種方法是不會覆蓋的