Outline for March 5, 2018

Homework: due March 6, 2018 at 11:59pm

1. Fun problem: number of grains of rice on the chessboard [rice_chess.py]
2. Character/integer conversions [chr.py][ord.py]
   1. Cæsar cipher (shift cipher) [caesarenc.py][caesardec.py]
3. Common exceptions
   1. ZeroDivisionError — attempt to divide (or take the remainder of) something by 0
   2. TypeError — operation or function applied to operand of wrong type
   3. SyntaxError — Python parser encountered a malformed statement
   4. NameError — local or global name is not found
   5. ValueError — built-in function or operation applied to operator with illegal value
   6. EOFError — input function encounters an end of file
   7. Keyboard Interrupt — user hit the interrupt key (usually control-C)
4. Handling exceptions
   1. except [except0.py]
   2. except exceptcode [except1.py]
   3. else [except2.py]
   4. except exceptcode as msgvar [except3.py]
   5. finally [except4.py]
   6. Exceptions in a function: who handles them? [except5.py][except6.py]
   7. Using global variables as error flags [except6a.py]
   8. raise exceptcode message [except7.py]
5. Online Python documentation
6. JSON [json-ex.py]
   1. What it is
   2. json.loads
   3. json.dumps

Matt Bishop Department of Computer Science University of California at Davis Davis, CA 95616-8562 USA

Last modified: Version of March 5, 2018 at 7:20PM Winter Quarter 2018 You can get a PDF version of this