我正在尝试创建一个简单的Tkinter
用户注册应用,但遇到了问题。我希望从Entry
获取输入到另一个函数。
截至目前我的代码:
from Tkinter import *
def addUsr():
username = sv.get() #here
password = sv1.get() #here
page = open("Users.txt", 'r+')
contents = page.read()
page.write("--->")
page.write("\n")
page.write("username: " + username)
page.write("\n")
page.write("password: " + password)
page.write("\n")
page.write("<---")
page.write("\n")
page.close()
print contents
def reg():
usrs = Tk()
usrs.title("Text")
usrs.geometry('450x300+200+200')
sv = StringVar()
sv1 = StringVar()
ent1 = Entry(usrs, textvariable=sv).pack()
ent2 = Entry(uses, textvariable=sv1).pack
button1 = Button(usrs, text="submit", command=addUsr).pack(side='bottom', padx=15, pady=15)
usrs.mainloop()
我想将sv
和sv1
放入addUsr
函数,但此代码会返回错误消息:
username = sv.get()
NameError: global name 'sv' is not defined
当构建代码以使第二个函数不是函数时,此代码可以正常工作。我只是想找到一种方法来获得相同的结果,但使用这种结构。你怎么想我这样做?
答案 0 :(得分:0)
我认为这是一个结构性问题。您通常会使用类来创建应用程序并将所有内容放在该类下。然后从任何地方访问函数和变量都很简单。我创建了一个简单的例子,因为我没有时间重写你的所有代码!
from Tkinter import *
class Application(Frame): # create a class to hold the application within
def __init__(self, master): # boot it up
""" Initialize the frame. """
Frame.__init__(self, master)
self.grid()
self.create_widgets()
self.var1 = "var1"
self.var2 = "var2"
def create_widgets(self): # create the GUI interface
self.lbl = Label(self, text = "xxxx")
self.lbl.grid(row = 0, column = 0, columnspan = 2, sticky = W, pady = 4)
self.input = Text(self, width = 35, height = 5, wrap = WORD)
self.input.grid(row = 1, column = 0, columnspan = 2, sticky = W)
self.submit_button = Button(self, text = "submit", command = self.functionX)
self.submit_button.grid(row = 2, column = 0, columnspan = 2, sticky = W)
def functionX(self):
print "do some stuff"
self.var3 = "yet another variable" # create a variable in one function for access in another
self.functionY() # call one function from another function
def functionY(self):
print "do something else"
print self.var1 # access some class variables
print self.var2
print self.var3
root = Tk()
root.title("xxxxxxxxxxxx")
root.geometry("330x310")
app = Application(root)
我希望这会有所帮助,当您运行代码并阅读它以了解正在发生的事情时,它是非常自我解释的。 (顺便说一句,我最终使用PyQt / Pyside和QtDesigner而不是Tkinter,你可能想要检查一下,如果你还不知道它。)