Outline for October 29, 2020

Reading: §8
Due: Homework 2, due October 30, 2020

1. I have to change my office hours tomorrow. I am moving them to 3:30pm–4:30pm.

2. Lists
   1. Sequence of values (ints, floats, strings, other lists, etc.)
   2. Denoted by square brackets [ ] with values separated by commas
   3. Lists are mutable
   4. How to create a list

3. Lists and strings [datecvt.py]

4. Program to print words in a line [lines.py]

5. What you can do with lists
   1. Check membership: in, not in
   2. +: concatenation
   3. *: repetition
   4. list[a:b]: slice list from a to b-1
   5. del list[i]: delete element list[i]; i can be a slice

6. List methods
   1. Add elements to, remove elements: L.append(x), L.extend(ls), L.insert(i, x), L.pop(), L.remove(x)
   2. Element ordering: L.reverse(), L.sort()
   3. Other: L.count(x), L.index(x)

7. Objects, references, aliasing
   1. For strings, one copy: assume a = "banana"
      1. After b = a or b = a[:], then a is b is True
   2. For lists, multiple copies: assume A = [ 1, 2, 3 ]
      1. After B = A then A is B is True
      2. After B = A[:], then A is B is False

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

MHI 289I, Programming for Health Informatics Version of October 28, 2020 at 11:20PM

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