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      StringSlicing StringsModify StringsString ConcatenationString FormattingEscape CharactersString MethodsString Exercises

      ListsList ExercisesAccess List ItemsChange List ItemsAdd List ItemsRemove List ItemsLoop ListsList ComprehensionSort ListsCopy ListsJoin ListsList Methods

      TuplesAccess Tuple ItemsUpdate TuplesUnpack Tuple ItemsLoop TuplesJoin TuplesTuple MethodsTuple Exercises

      SetsAccess Set ItemsAdd Set ItemsRemove Set ItemsLoop SetsJoin SetsCopy SetsSet OperatorsSet MethodsSet Exercises

      DictionariesDictionary ExercisesAccess Dictionary ItemsChange Dictionary ItemsAdd Dictionary ItemsRemove Dictionary ItemsDictionary View ObjectsLoop DictionariesCopy DictionariesNested DictionariesDictionary Methods

      ArraysAccess Array ItemsAdd Array ItemsRemove Array ItemsLoop ArraysCopy ArraysReverse ArraysSort ArraysJoin ArraysArray MethodsArray Exercises

      File HandlingWrite to FileRead FilesRenaming and Deleting FilesDirectoriesFile Methods

      OOP ConceptsDynamic BindingDynamic TypingAbstractionObject and ClassesEncapsulationInterfacesPackagesInner ClassesAnonymous Class and ObjectsSingleton ClassWrapper ClassesEnumsReflectionClass AttributesClass MethodsStatic MethodsConstructorsAccess ModifiersInheritancePolymorphismMethod OverridingMethod Overloading

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      Course
      Dictionary Exercises

      Python Tutorial

      This Python tutorial has been written for the beginners to help them understand the basic to advanced concepts of Python Programming Language. After completing this tutorial, you will find yourself at a great level of expertise in Python, from where you can take yourself to the next levels to become a world class Software Engineer.

      Dictionary Exercises

      Example 1

      Python program to create a new dictionary by extracting the keys from a given dictionary.
      d1 = {"one":11, "two":22, "three":33, "four":44, "five":55}
      keys = ['two', 'five']
      d2={}
      for k in keys:
         d2[k]=d1[k]
      print (d2)
      It will produce the following output
      {'two': 22, 'five': 55}

      Example 2

      Python program to convert a dictionary to list of (k,v) tuples.
      d1 = {"one":11, "two":22, "three":33, "four":44, "five":55}
      L1 = list(d1.items())
      print (L1)
      It will produce the following output
      [('one', 11), ('two', 22), ('three', 33), ('four', 44), ('five', 55)]

      Example 3

      Python program to remove keys with same values in a dictionary.
      d1 = {"one":"eleven", "2":2, "three":3, "11":"eleven", "four":44, "two":2}
      vals = list(d1.values())#all values
      uvals = [v for v in vals if vals.count(v)==1]#unique values
      d2 = {}
      for k,v in d1.items():
         if v in uvals:
            d = {k:v}
            d2.update(d)
      print ("dict with unique value:",d2)
      It will produce the following output
      dict with unique value: {'three': 3, 'four': 44}

      Exercise Programs

      • Python program to sort list of dictionaries by values
      • Python program to extract dictionary with each key having non-numeric value from a given dictionary.
      • Python program to build a dictionary from list of two item (k,v) tuples.
      • Python program to merge two dictionary objects, using unpack operator.

      Practice with Online Editor

      Note: This Python online Editor is a Python interpreter written in Rust, RustPython may not fully support all Python standard libraries and third-party libraries yet.
      Remember to save code(Ctrl + S Or Command + S) before run it.