tkinter messagebox中的格式化方法

Question

我想使用Python 3中的.format（）方法返回一個特定的數值，並在其中使用div運算符（/）在其中進行小計算。

但是，messagebox庫不支持此功能。

 #Remind dilutions 
    if self.initial_concentration > (1000): 
     messagebox.INFO('Since your dilution is in the lowest range, consider a 1:100 pre-dilution first, so you would have {:2f}').format(answer) 

你知道我該怎麼克服這個問題？

謝謝

Answer 1

messagebox.INFO('Since ... have {:2f}').format(answer) 
#         ^
# calling `format` method of the return value of the `INFO(..)`, 
# (not against the formatting string) 
# which may not exists; possibly causing AttributeError 

上面的行應改爲：

messagebox.INFO('Since ... have {:2f}'.format(answer)) 

Answer 2

format是STR功能，你應該從STR用它代替從INFO。

解決方案：

messagebox.INFO('Since your dilution is in the lowest range, consider a 1:100 pre-dilution first, so you would have {:2f}'.format(answer))