邮件python中的F-String

Question

当我使用f-string打印供应商名称时，我使用以下代码：

for i in range(1,10):
    print(f'{df_supplier_number["SUPPLIER NAME"][i]}')

结果如下：

supplier 1
supplier 2
supplier 3
supplier 4
supplier 5
...

但是当使用这种方法写电子邮件时，我就不工作了。

for i in range(1,10):
    outlook = win32.Dispatch('outlook.application')
    mail = outlook.CreateItem(0)
    mail.Subject = f'{df_supplier_number["SUPPLIER NAME"][i]}' + "_test"
    mail.To = "test@mail.com"
    mail.HTMLBody = r"""
    Hallo,<br><br>
    test """f"{df_supplier_number[i]}"r""" erstellen:<br><br>
    Mit dem Text:<br>
    test1 by """f"{df_supplier_number[i]}"r""".<br>
    Settlement Date Range: 01. November 2020 to 31. October 2021.<br><br>
    Und dem Betrag:<br>
    """f'{round(df_supplier_number[i],2)}'r""" € (wie in der angehängten Excel-Datei zu erkennen).<br><br>
    test
    """
    mail.Attachments.Add(os.getcwd()+ "\\" + f'{df_number[i]}'"_test.xlsx")
  
    mail.Send()

提前感谢！

Answer 1

看上去你可能对r-字符串和f-字符串疯狂了。我在HTMLBODY部分的开头和删除的加法r、f和可能不需要的地方放置了一对。请尝试下面的选项，看看它是否适合您。我随机列出了一个数字列表来测试，所有的东西似乎都在我的头上工作。

for i in range(1,10):
    outlook = win32.Dispatch('outlook.application')
    mail = outlook.CreateItem(0)
    mail.Subject = f'{df_supplier_number["SUPPLIER NAME"][i]}' + "_test"
    mail.To = "test@mail.com"
    mail.HTMLBody = rf"""
        Hallo,<br><br>
        test "{df_supplier_number[i]}" erstellen:<br><br>
        Mit dem Text:<br>
        test1 by "{df_supplier_number[i]}".<br>
        Settlement Date Range: 01. November 2020 to 31. October 2021.<br><br>
        Und dem Betrag:<br>
        '{round(df_supplier_number[i],2)}'€ (wie in der angehängten Excel-Datei     
zu erkennen).<br><br>
test
"""
mail.Attachments.Add(os.getcwd()+ "\\" + f'{df_number[i]}'"_test.xlsx")

mail.Send()