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User:Jtmorgan/sandbox
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=== Lists === * purpose ** Stores things ''in order'' * initialization ** making a list called my list: <code>my_list = ["a", "b", "c"]</code> ** comma separated elements. in python they can be a mix of any kind of types ** <code>type(my_list)</code> * <tt>len()</tt> review * accessing elements ** indexing like my_list[0] ** indexing starts from the front and we ''start counting at 0'' (now you understand all the zeros we've been using) ** we go from the end with negative numbers ** what happens if we try to move outside of the range? ('''error!'') * adding elements ** using the the <code>my_list.append()</code> function ** the <code>.append()</code> function is a special kind of function that lists know about * changing elements ** replacing elements like <code>my_list[0] = "foo"</code> * finding elements in list ** e.g., <code>"z" in my_list</code> * slicing lists ** the colon inside the [] is the ''slicing syntax'' ** e.g., <code>my_list[0:2]</code> is 0th up to, but not including, the 2nd ** e.g., <code>my_list[2:]</code> ** e.g., <code>my_list[:2]</code> ** e.g., <code>my_list[:]</code> * strings are like lists ** we can slice lists ** len() *** <code>len("")</code> length of the empty string * many other interesting functions for lists ** e.g., <code>min()</code> and <code>max()</code> ** e.g., create a list of names and sort it <code>names.sort()</code>
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