我有一段时间清理这个文本wigit。我承认我是python及其GUI API的新手,但是我已经阅读了文档并尝试了Stack Overflow的建议,但没有成功。Python - 清除和重置文本widgit - Tkinter
我见过很多人建议:self.text.delete(0.0, 'end')
然而,这在听者不工作。奇怪的是,如果我把它放在构造函数中,它确实有效。我也没有从监听器堆栈跟踪。以下是代码:
import tkinter
from tkinter import Text
def main():
CalculatorGUI(CalculatorController())
class CalculatorController:
def __init__(self):
self.ans = "0"
def calculate(self, textBox):
value = str("")
try:
inputValue = textBox.replace(",", "").replace(" ", "")
if inputValue[:1] in "-*/+%":
value = str(eval(self.ans + inputValue))[::-1]
else:
value = str(eval(inputValue))[::-1]
return self.makeHumanReadable(value)
except:
return "I cannot math that!"
def makeHumanReadable(self, stringValue):
if "." in stringValue:
decimal = stringValue[:stringValue.index(".")]
integer = stringValue[stringValue.index(".") + 1:]
self.ans = (decimal + "." + (','.join(integer[i:i+3] for i in range(0, len(integer), 3))))[::-1]\
.replace(",", "").replace(" ", "")
print("Current answer is: " + self.ans)
return (decimal + "." + (','.join(integer[i:i+3] for i in range(0, len(integer), 3))))[::-1]
else:
self.ans = ','.join(stringValue[i:i+3] for i in range(0, len(stringValue), 3))[::-1] \
.replace(",", "").replace(" ", "")
return ','.join(stringValue[i:i+3] for i in range(0, len(stringValue), 3))[::-1]
class CalculatorGUI:
def __init__(self, controller):
self.controller = controller
self.root = tkinter.Tk()
self.frame1 = tkinter.Frame(self.root)
self.frame2 = tkinter.Frame(self.frame1)
self.text = BetterText(self.frame1, height=1, borderwidth=0)
self.text.insert(1.0, "Enter a math statement:")
# self.text.delete(0.0, 'end') # If this is not commented out, it deletes
# the text but not when put in the listener
# self.text.clearAll() # Same here
self.text.configure(state="disabled")
self.entry = tkinter.Entry(self.frame2, width = 30)
self.calcButton = tkinter.Button(self.frame2, text="Calculate", \
command=self.calculate)
self.text.pack()
self.entry.pack()
self.calcButton.pack()
self.frame1.pack()
self.frame2.pack()
self.root.mainloop()
def calculate(self):
self.entry.delete(0, "end")
self.text.clearAll() # Does not work
if self.entry.get() != "":
self.text.insert("END", self.controller.calculate(self.entry.get()))
main()
任何想法?使用Python 3.4
编辑:我甚至尝试过扩展文本小部件并制作clearAll()方法。它再次在构造函数中工作,但不在侦听器中,并且不会引发错误。它可能在代码的其他地方存在问题,我只是看不到它。
class BetterText(Text):
def __init__(self, master=None, cnf={}, **kw):
Text.__init__(self, master, kw)
def clearAll(self):
self.delete(0.0, 'end')
请显示你得到的错误。从文本小部件中删除所有内容的正确方法与您所说的非常接近:'self.text.delete(“1.0”,“end”)' –
这就是问题所在,我没有收到错误。我把一个打印语句放在监听器中,看它是否正在执行......它是什么。但我没有错误 – MarsTwo
给代码一个尝试,应该复制/粘贴/执行 – MarsTwo