title: tkinter button command runs function without clicking?
body: <p>im brand new to GUIs and python itself really. im trying to make a simple triva game in python 3.x using tkinter. the idea is that it will have multiple questions and will tell you if you got it right or wrong as well as tell you how many you got right. the issue im running into however, is that for some reason all the buttons i have act as if they have been clicked when they havent. code below:</p>
  
  <pre><code>from tkinter import *
  class Correct(object):
      value = True
      def __init__(self, text):
          self.text = text
  
  
  class Incorrect(object):
      value = False
      def __init__(self, text):
          self.text = text
  
  
  def check(value):
      if value == True:
          print("you picked the right answer!")
      else:
          print("sorry thats not right")
  
  
  question1 = ["this is a question", Correct("right answer"), Incorrect("wrong b"), Incorrect("wrong c"),
               Incorrect("wrong d")]
  
  
  master = Tk()
  
  qlabel1 = Label(master,text=question1[0])
  
  # buttons
  choice1 = Button(master, text=question1[1].text, command=check(question1[1].value))
  choice2 = Button(master, text=question1[2].text, command=check(question1[2].value))
  choice3 = Button(master, text=question1[3].text, command=check(question1[3].value))
  choice4 = Button(master, text=question1[4].text, command=check(question1[3].value))
  
  # pack
  qlabel1.grid(row=0, column=0)
  choice1.grid(row=1, column=0)
  choice2.grid(row=1, column=2)
  choice3.grid(row=2, column=0)
  choice4.grid(row=2, column=1)
  mainloop()
  </code></pre>