All language subtitles for 18. Dictionary Types

So you are a teacher and you wanted to calculate the average grades of your students.
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And do we do that using this algorithm here and this data structure to store the grades.
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The problem here is you don't know which grade is of who.
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So while a lise is a good data structure to store an array of items, it's not good enough when these
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items have some sort of identity attached to them.
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In that case you want to use a dictionary.
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Let's say student grades curly brackets.
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That's a syntax for a dictionary.
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And then you use names of your students. Let's say Marry, a colon.
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Make some space or not, whatever you prefer.
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But it's good to have a space there to make it more readable.
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And then you write the grade of Merry.
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Let's say Sim, 8.8.
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John colon, 7.5.
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So the difference between the dictionary and the list is the brackets, different brackets.
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And then this is considered an item in a dictionary.
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This is considered an item in a list.
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So items in a dictionary are made of keys.
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This is a key, and values.
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This is a value. A list would be more appropriate if we had to store for example an array of temperature values.
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Let's say Monday had these temperatures. Monday temperatures.
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And lastly how do we calculate the average when we have a dictionary? Since these are pairs of keys
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and values.
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You can't just make the sum like that.
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You need to specify the sum of what you want to get.
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So student grades and if you check dir dict for dictionary,
you'll see that dictionaries have these
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values which is a method, dict.values it is a method and it provides a view of a dictionary of values.
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In simple words
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it gives you the values of a dictionary.
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So if you get this dictionary, Q for quit here, paste it here,
and see student_grades.values and that
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will give you this data type.
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So it's still a data type.
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It does look like at list, it's not exactly a list,
but it behaves like a list with these three values
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there.
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So it's a dict values type.
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That method produces this type and therefore you can add that in there.
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Don't forget the parentheses.
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Don't forget to save.
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And don't forget to execute to give the output and this is the average value of a dictionary of values.
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To get the keys of a dictionary
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just do keys and you get this dict keys type with the keys of the dictionary as items of that dict keys
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arrays.