clt230: Ohjelmoinnin perusteet (Introduction to Programming) - syksy 2006

Yleisen kielitieteen laitos
PL 9 (Siltavuorenpenger 20 A)
00014 HELSINGIN YLIOPISTO

Puhelin +358 (09) 1911 (vaihde)
Faksi +358 (09) 191 29307

13. Files and input/output.

Lecture notes
- LiveWires sheet I: Input and output
- How to Think Like a Computer Scientist,
  Chapter 11: Files and exceptions
Practical work
- Using IDLE, write a program that outputs a text file called alphabet.txt containing the names of all the letters of the Greek alphabet as strings ("alpha", "beta", etc.), with each letter on a separate line. View the file in a text editor.
- Write another program that opens and reads alphabet.txt line by line as far as "lambda", then opens another file called lambda.txt and copies the rest of alphabet.txt to lambda.txt starting from "lambda".

14. Conclusion: Where do we go from here?

Lecture notes
- LiveWires sheet O: Objects and classes
Practical work
- Using IDLE, try the examples shown in O: Objects and classes.
Further reading
- You can continue with How to Think Like a Computer Scientist,
  from Chapter 10: Dictionaries to Chapter 20 Trees.
  Simple parsing with a stack is introduced in Chapter 18: Stacks.
Next course
- You can continue learning Python on Thursday afternoons in the course clt261 Syntactic NLP Tools which uses the Python NLTK Natural Language Toolkit to analyse words, sentences and texts.

Note: Do either Assignment 6A or Assignment 6B, but not both.