CS170: Programming for the World Around Us - File I/O with Python
Activity Goals
The goals of this activity are:- To read and write files with Python
Supplemental Reading
Feel free to visit these resources for supplemental background reading material.The Activity
Directions
Consider the activity models and answer the questions provided. First reflect on these questions on your own briefly, before discussing and comparing your thoughts with your group. Appoint one member of your group to discuss your findings with the class, and the rest of the group should help that member prepare their response. Answer each question individually from the activity, and compare with your group to prepare for our whole-class discussion. After class, think about the questions in the reflective prompt and respond to those individually in your notebook. Report out on areas of disagreement or items for which you and your group identified alternative approaches. Write down and report out questions you encountered along the way for group discussion.Model 1: File I/O in Python
1 2 3 4 5 | file = open("input.txt", "r")lines = file.readlines()for line in lines: print(line) |
Questions
- Create a file called
input.txtand run this program. What does it do? - Modify this program to count the number of words in each line, and print that to the screen.
Model 2: Writing Files in Python
1 2 3 | file = open("input.txt", "w")file.write("High Score: 100")file.close() |
Questions
- Run this program, then write a program to read this file, read the line, split it on the
:character, and print the high score value (just the 100).