我需要知道如何将选定的单选按钮实现到我的计算中。感谢您的帮助!我真的不肯定问题是什么,我唯一的任务真的来自“def选择”部分。我只是不知道该怎么做
from Tkinter import *
class App(Tk):
def __init__(self):
Tk.__init__(self)
self.headerFont = ("Times", "16", "italic")
self.title("Restaurant Tipper")
self.addOrigBill()
self.addChooseOne()
self.addPercTip()
self.addRateTip()
self.addOutput()
def addOrigBill(self):
Label(self, text = "Bill Amount",
font = self.headerFont).grid(columnspan = 1)
self.txtBillAmount = Entry(self)
self.txtBillAmount.grid(row = 1, column = 1)
self.txtBillAmount.insert(0,"100.00")
def addChooseOne(self):
Label(self, text = "Pick ONE! Choose your % of Tip or Rate your experience",
font = self.headerFont).grid(row = 2, column = 1)
def addPercTip(self):
Label(self, text = "% of Tip",
font = self.headerFont).grid(row = 3, column = 0)
self.radPercTip1 = Radiobutton(self, text = "15%",
variable = self.percVar, value = .15, command = self.selected)
self.radPercTip2 = Radiobutton(self, text = "17%",
variable = self.percVar, value = .17, command = self.selected)
self.radPercTip3 = Radiobutton(self, text = "20%",
variable = self.percVar, value = .20, command = self.selected)
self.radPercTip1.grid(row = 4, column = 0)
self.radPercTip2.grid(row = 5, column = 0)
self.radPercTip3.grid(row = 6, column = 0)
def selected(self):
float(self.percVar.get())
def addRateTip(self):
Label(self, text = "Tip by rating").grid(row = 3, column = 3)
Label(self, text = "1 being the worst").grid(row = 4, column = 3)
Label(self, text = "10 being the best").grid(row = 5, column = 3)
Label(self, text = "Experience").grid(row = 6, column = 2)
self.txtExperience = Entry(self)
self.txtExperience.grid(row = 6, column = 3)
def addOutput(self):
self.btnCalc = Button(self, text = "Calculate Tip")
self.btnCalc.grid(row = 7, columnspan = 2)
self.btnCalc["command"] = self.calculate
Label(self, text = "Tip").grid(row = 8, column = 1)
self.lblTip = Label(self, bg = "#ffffff", anchor = "w", relief = "ridge")
self.lblTip.grid(row = 8, column = 2, sticky = "we")
Label(self, text = "Total Bill").grid(row = 9, column = 1)
self.lblTotalBill = Label(self, bg = "#ffffff", anchor = "w", relief = "ridge")
self.lblTotalBill.grid(row = 9, column = 2, sticky = "we")
def calculate(self):
bill = float(self.txtBillAmount.get())
percTip = self.percVar
rateTip = int(self.addRateTip.get())
tip = bill * percTip
self.lblTip["text"] = "%.2f" % tip
totalBill = tip + bill
self.lblTotalBill["text"] = "%.2f" % totalBill
if rateTip <= 2:
percTip = .10
elif 3 <= rateTip <= 4:
percTip = .12
elif 5 <= rateTip <= 6:
percTip = .15
elif 7 <= rateTip <= 8:
percTip = .17
elif 9 <= rateTip <= 10:
percTip = .20
else:
self.lblTotalBill["text"] = "Something is wrong"
def main():
app = App()
app.mainloop()
if __name__ == "__main__":
main()
答案 0 :(得分:0)
您忘了初始化self.percVar
变量
添加self.percVar = 0
作为addPercTip
方法的第一行。这应该可以解决你的错误。
答案 1 :(得分:0)
代码中没有self.percVar
。正如@wastl所说,你需要初始化它。
为此,您需要使用variable classes之一。由于您使用的是float
类型,因此DoubleVar()
将是最佳选择。
def addPercTip(self):
self.percVar = DoubleVar() #this line should be added in your method
Label(self, text = "% of Tip",
font = self.headerFont).grid(row = 3, column = 0)
def selected(self):
print (type(self.percVar.get()))
#which is float, without converting explicitly because of DoubleVar()
print (self.percVar.get())
#this will print what you click