How to get all the keys with the same values?

Question

question@mail.ru · 01.01.1970 03:00

How to get all the keys with the same values?

There is such a dictionary: mydict = {'Main': 'Open', 'Second': 'Close', 'Third': 'Open'} . It is necessary to get all the keys to the values of 'open'

. Class = ""> 'Main' :  'open' ,  'second' :  'clause' ,  'Third' :  'open' }   print  ( list  (mydict.keys ()) [ List  (mydict.values ()). Index ( 'open' )])      it displays only  main . How to display all the keys with the meaning of  'Open' ?

Answer 1

answer@mail.ru · 01.01.1970 03:00

Lea list inclusions , they very often come in handy in python, because they allow you to make samples quite briefly and clearly:

  MyDict = { 'Main' :  'open' ,  'second' :  'clause' ,  'Third' :  'open' }   print  ([k  for  k  in  in  MyDICT  if  mydict [k] ==  "open" "])

  conclusion: 
    [ 'main' ,  'third' ]   
   this is essentially the same solution, only written into one line and without using a variable for accumulating to accumulate List.

How to get all the keys with the same values?

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