由于Python没有switch语句,我应该使用什么?
  可能重复: 
  python中switch语句的替代? 
我在Python中制作了一个基于控制台的应用程序,我想使用一个Switch语句来处理用户选择菜单选项。
你的兽医建议我用什么。 谢谢!
调度表,或者说是字典。
你也可以映射钥匙。 菜单选择的值到执行所述选择的功能:
def AddRecordHandler():
        print("added")
def DeleteRecordHandler():
        print("deleted")
def CreateDatabaseHandler():
        print("done")
def FlushToDiskHandler():
        print("i feel flushed")
def SearchHandler():
        print("not found")
def CleanupAndQuit():
        print("byez")
menuchoices = {'a':AddRecordHandler, 'd':DeleteRecordHandler, 'c':CreateDatabaseHandler, 'f':FlushToDiskHandler, 's':SearchHandler, 'q':CleanupAndQuit}
ret = menuchoices[input()]()
if ret is None:
    print("Something went wrong! Call the police!")
menuchoices['q']()
记得验证你的输入! :)
  有两种选择,第一种是if ... elif ...链的标准。  另一个是字典映射到可调用选择(功能是一个子集)。  取决于你在做什么,哪一个是更好的主意。 
elif链
 selection = get_input()
 if selection == 'option1':
      handle_option1()
 elif selection == 'option2':
      handle_option2()
 elif selection == 'option3':
      some = code + that
      [does(something) for something in range(0, 3)]
 else:
      I_dont_understand_you()
字典:
 # Somewhere in your program setup...
 def handle_option3():
    some = code + that
    [does(something) for something in range(0, 3)]
 seldict = {
    'option1': handle_option1,
    'option2': handle_option2,
    'option3': handle_option3
 }
 # later on
 selection = get_input()
 callable = seldict.get(selection)
 if callable is None:
      I_dont_understand_you()
 else:
      callable()
使用字典将输入映射到函数。
switchdict = { "inputA":AHandler, "inputB":BHandler}
处理程序可以是任何可调用的。 然后你就像这样使用它:
switchdict[input]()
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