Section 27.9 Chapter Concept Summary
This chapter included the following concepts from computing.
- Append - To append means to add something to the end
- List - A list holds items in order. An example of a list is
[1, "hi", 3]. Lists in Python can hold any type of data. - Index - The index is the position of the item in a list or string. In Python the first item is at index 0.
Subsection 27.9.1 Summary of Python Keywords and Functions
- len - The
len(length) function returns the number of items in a collection (a string or a list). It is used like:len(list) - append - Adds an item to the end of a list:
list.append(item) - insert - Adds an item to the specified position of a list:
list.insert(0, item)adds the item at the start of the list. - pop - Removes an item from the specified position of a list:
list.pop(1)removes the second item (index 1). When called without an index,list.pop(), it removes the last thing. - remove - Removes the first copy of the specified item from the list.
list.remove("A")would remove the first “A” from the list.
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