Question

我一直在看我的代码一段时间，这是tkinter的新手。我的代码的目的是在Canvas小部件内显示文本，而不覆盖标签。但不确定如何执行此操作：

我的代码如下：

from tkinter import *

class Example(Frame):

    def printLabel(self):
        self.hello = []
        self.hello.append('Hello')
        self.hello.append('World!')
        return(self.hello)

    def updatePanel(self):
        self.panelA.config(text="{}".format(self.printLabel()))

    def __init__(self, root):
        Frame.__init__(self, root)
        self.buttonA()
        self.viewingPanel()

    def buttonA(self):
        self.firstPage = Button(self, text="Print Text", bd=1, anchor=CENTER, height = 11, width = 13, command=lambda: self.updatePanel())
        self.firstPage.place(x=0, y=0)

    def viewingPanel(self):
        self.panelA = Label(self, bg='white', width=65, height=13, padx=3, pady=3, anchor=NW, text="")
        self.panelA.place(x=100, y=0)
        self.cl= Canvas(self.panelA,bg='WHITE',width=165,height=113,relief=SUNKEN)
        canvas_id = self.cl.create_text(15, 15, anchor="nw")

        self.xb= Scrollbar(self.panelA,orient="horizontal", command=self.cl.xview)
        self.xb.pack(side=BOTTOM,fill=X)
        self.xb.config(command=self.cl.xview)
        self.yb= Scrollbar(self.panelA,orient="vertical", command=self.cl.yview)
        self.yb.pack(side=RIGHT,fill=Y)
        self.yb.config(command=self.cl.yview)

        self.cl.itemconfig(canvas_id,font=('Consolas',9), text="{}".format(self.printLabel()))
        self.cl.configure(scrollregion = self.cl.bbox("all"))
        self.cl.config(xscrollcommand=self.xb.set, yscrollcommand=self.yb.set)
        self.cl.config(width=250,height=150)
        self.cl.pack(side=LEFT,expand=True,fill=BOTH)

def main():
    root = Tk()
    root.title("Tk")
    root.geometry('378x176')
    app = Example(root)
    app.pack(expand=True, fill=BOTH)
    root.mainloop()

if __name__ == '__main__':
    main()

Hello World!应该显示在Canvas中，但没有括号，但是主要的问题是，当我单击Button时，它只是与画布重叠，并且将附加内容打印到Label。

Label应该在Canvas内部。

Answer 1

以下是解决“主要问题”和“括号问题”的方法。注释中建议使用字符串accounts = {'hello':'h1'} print(accounts) started = "" while started != "q": started = input("Are you a registered user y/n: (if you want to quit press any key)") if started == "n": createLogin = input("Create your desired login name: ") if createLogin in accounts: print ("Login name already exist!") else: createPassw = input("Create your desired password password: ") accounts[createLogin] = createPassw print("User created!") addemail = input("What is your email address :") accounts[createLogin].append(addemail) elif started == "y": login = input("Enter your login name: ") if login in accounts: passw = input("Enter your password") else: print("user doesnt exist.") if login in accounts and accounts[login] == passw: print("Login successful!") changepassword = input("Would you like to change your password?") if changepassword in ["Y", "y"]: newpassw = input("What do you want your new password to be?") accounts[login] = newpassw print("password succesfully changed!") else: print("Password was not changed.") else: print("Incorrect password!")方法来解决后者。

join()方法已被修改，因此它首先创建一个updatePanel()小部件，其中包含您要显示的文本，然后是一个Label“窗口”对象，将该小部件指定为其内容。您尝试执行此操作的方法的代码也已从其他类方法中删除。

Canvas

tkinter canvas文本输出

1 个答案: