我希望我的代码检查这两个条件是否与输入框中输入的相同

Question

我的代码中有输入框。我希望我的代码检查输入框中输入的内容是否满足条件，如果不满足则输出一条错误消息。如果满足条件，它会继续进行计算。我的问题是，如果不满足条件，消息框工作正常，但如果满足条件，则弹出错误。没有计算。

我收到以下错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\BW345KB\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1883, in __call__
    return self.func(*args)
  File "C:\Users\BW345KB\OneDrive - EY\Documents\My Work\My Projects\JULES PROVMAT IMPAIRMENT App\prov_matrix.py", line 199, in prov_result
    cond_tw = eval(tw)
  File "<string>", line 0
    ^
SyntaxError: unexpected EOF while parsing

错误不明可以参考图片

dd = self.dd.get()
tot = self.tot.get()
on = self.one.get()
tt = self.thirty.get()
sx = self.sixty.get()
nn = self.ninety.get()
tw = self.twenty.get()
cur = self.curr.get()

#for conditions

cond_dd = eval(dd)
cond_tw = eval(tw)

if (cond_tw > 0 and cond_dd == 90):
        messagebox.showwarning("Error", "Your Definition of Default Is " + dd + " Days Past Due")

else:
    up1 = eval(tot) - eval(cur) #paid total - current
    up2 = up1 - eval(on)  #paid current - 1-30
    up3 = up2 - eval(tt) #paid 1-30 - 31-60
    up4 = up3 - eval(sx)  #paid 31-60 - 61-90
    up5 = up4 - eval(nn) #written off

Answer 1

根据我对提供的资源中的问题的理解，缺少完整的代码，正如@jasonharper 所说，没有 minimal reproducible example，以下似乎是一个可能的解决方案。

正如@jasonharper 指出的那样，tw 似乎是一个空字符串，因此当通过 eval 函数传递时 python 抛出一个 EOF（文件结束）异常。

我认为这里需要尝试语句并捕获异常，如果捕获到异常，我们会提示用户输入的字符串为空，即 -: ''.

像这样-:

dd = self.dd.get()
tot = self.tot.get()
on = self.one.get()
tt = self.thirty.get()
sx = self.sixty.get()
nn = self.ninety.get()
tw = self.twenty.get()
cur = self.curr.get()

#for conditions
try :
    cond_dd = eval(dd)
    cond_tw = eval(tw)
except Exception :
    messagebox.showwarning("Error", "You have provided no condition for either dd or tw.")

if (cond_tw > 0 and cond_dd == 90):
    messagebox.showwarning("Error", "Your Definition of Default Is " + dd + " Days Past Due")
else:
    up1 = eval(tot) - eval(cur) #paid total - current
    up2 = up1 - eval(on)  #paid current - 1-30
    up3 = up2 - eval(tt) #paid 1-30 - 31-60
    up4 = up3 - eval(sx)  #paid 31-60 - 61-90
    up5 = up4 - eval(nn) #written off

我希望我的代码检查这两个条件是否与输入框中输入的相同

I want my code to check if the two conditions are the same as what has been entered in the Entry Boxes

python

python-3.x

tkinter

finance

tkinter-entry