Tkinter: 如何将Text Widget中输入的文本保存到新窗口？

Question

你好，我刚开始学习用Tkinter编程。我写了一个正在开发中的程序。我创建了一个叫做 IngredientAdder() 的类，在这个类里面有一个方法 def steps_box，里面有一个变量 self.entry2，它用来调用文本框。当我运行程序时，文本框工作得很好。不过，在我的另一个方法 def save_recipie 中，我写了一个代码，让它在我按下 init.gui 方法里的按钮时，把 words.get('1.0', 'end') 的内容打印到终端窗口（这里的 words.get 是用来获取用户在文本框 self.entry2 中输入的文本）。但是，当我运行程序，输入文本后按下保存按钮时，终端窗口里什么也没有打印出来。我该怎么修改我的代码，让用户在文本框中输入的内容能打印到终端窗口呢？求助！

如果你能在代码里加一些注释，那会非常有帮助！！谢谢。

import Tkinter

class Cookbook(Tkinter.Tk):
    def __init__(self):
        Tkinter.Tk.__init__(self)
        self.title("Cookbook")
        self.geometry("500x500+0+22")

        self.button = []
        for r in range(1):
            for c in range(1):
                b = Button(self).grid(row=r,column=c)
                self.button.append(b)

class Button(Tkinter.Button):
    def __init__(self,parent):
        b = Tkinter.Button.__init__(self, parent, text="Add A New Recipie", height=8, width=15, command=self.make_window)

    def make_window(self):
        popwindow = IngredientAdder()
        popwindow.title_box()
        popwindow.ingredients_box()
        popwindow.steps_box()
        popwindow.init_gui()

class IngredientAdder(Tkinter.Tk):
    def __init__(self):
        Tkinter.Tk.__init__(self)
        self.title("Recipie")
        self.geometry("555x500")

    def title_box(self):
        #Frame for the Title Label and the Title Entry Box
        self.frame1 = Tkinter.Frame(self, height=50, width=550, relief=Tkinter.SUNKEN)
        self.frame1.pack(anchor=Tkinter.NW,side=Tkinter.TOP)
        self.frame1.pack_propagate(False)

        #putting in a Title LABEL and ENTRY BOX
        Tkinter.Label(self.frame1,text="Title:").pack(anchor=Tkinter.NW,side=Tkinter.LEFT)
        self.entry1 = Tkinter.Entry(self.frame1,width=550)
        self.entry1.pack(anchor=Tkinter.NW,side=Tkinter.TOP)

    def ingredients_box(self):
        #Frame for the Ingredients Label and the Ingredients Entry Boxes & Steps label and Steps Textbox
        self.frame2 = Tkinter.Frame(self, height=412,width=550, relief=Tkinter.SUNKEN)
        self.frame2.pack(anchor=Tkinter.NW,side=Tkinter.TOP)
        self.frame2.pack_propagate(False)

        # put an Ingredients label at the top of the window and anchor it there
        ingredients_label = Tkinter.Label(self.frame2,text="Ingredients:").pack(anchor=Tkinter.NW,side=Tkinter.LEFT)   #.grid(row=100, column=0)

    def steps_box(self):
        self.entry2 = Tkinter.Text(self.frame2,width=40,height=33,font="helvetica 12",padx=5,pady=5).pack(anchor=Tkinter.NW,side=Tkinter.RIGHT)

        #putting in an entry box and Steps label for the steps of the recepie
        steps_label = Tkinter.Label(self.frame2,text="Steps:").pack(anchor=Tkinter.NW,side=Tkinter.RIGHT)   #.grid(row=100,column=1)

    def title_save(self):
        self.title_entries.append(self.entry1)

    def text_box(self):
        self.text_entries.append(self.entry2)

    # function to add new ingredients
    def add_ingredient_entry(self):
        entry = Tkinter.Entry(self.frame2)
        entry.pack(anchor=Tkinter.NW,side=Tkinter.TOP)
        self.ingredient_entries.append(entry)

    # get contents of all entry boxes
    def save_recipie(self):
        print("Title:")
        for words in self.title_entries:
            print words.get()
        print("Ingredients:")
        for ingredient in self.ingredient_entries:
            print ingredient.get()
        print("Steps:") 
        for text in self.text_entries:
            print text.get('1.0', 'end')
        print "[Recipie saved]"

    # build initial widgets 
    def init_gui(self):
        # title saved in this array, hopefully...
        self.title_entries = []     

        # this is a list of ingredients entry boxes
        self.ingredient_entries = []

        #this saves the list in this array, hopefully..
        self.text_entries = []

        #Making a frame at the bottom to put both buttons in line
        self.test4 = Tkinter.Frame(self,height=10, relief=Tkinter.SUNKEN)
        self.test4.pack(side=Tkinter.BOTTOM)

        # Put these two buttons at the bottom of the window and anchor them there
        Tkinter.Button(self.test4,text="Save recipe",command=self.save_recipie, width=15).pack(anchor=Tkinter.SE,side=Tkinter.RIGHT)
        Tkinter.Button(self.test4,text="Add ingredient",command=self.add_ingredient_entry, width=15).pack(anchor=Tkinter.NW,side=Tkinter.LEFT)

        # new ingredients will be added between the label and the buttons 
        self.add_ingredient_entry()

top = Cookbook()
top.mainloop()

Answer 1

这段代码

def steps_box(self):
    self.entry2 = Tkinter.Text(self.frame2,width=40,height=33,font="helvetica 12",padx=5,pady=5).pack(anchor=Tkinter.NW,side=Tkinter.RIGHT)

把 None 这个值放进 self.entry2。你应该放入

def steps_box(self):
    self.entry2 = Tkinter.Text(self.frame2, width=40, height=33, font="helvetica 12", padx=5, pady=5)
    self.entry2.pack(anchor=Tkinter.NW, side=Tkinter.RIGHT)

不过，你没有把 self.entry2 注册到 self.text_entries 里，因为你没有调用你的方法 text_box。