Quiz 1 Study Guide
You are responsible for all material needed for Lab 1, plus basic
from Week 2 (see below for examples). We will not be covering the
accumulator pattern or indexing on this quiz.
We will also not be testing you on Unix or
Study guides are not graded. You may work with other students on the questions, and ask questions about the guide during evening ninja help sessions, or with meetings with faculty and staff. We do not provide full solutions to the study guides.
You should understand the following terms:
Python as a programming language
Python concepts and functions
You should be able to use the following Python concepts and functions:
basic arithmetic expressions using +, -, *, /
reading in strings using
float(), and type conversion
string concatenation and string multiplication
basic accumulator pattern
Sample practice problems
1) Write a program to convert a certain number of gallons (entered by the user) to liters. There are 3.79 liters in a gallon.
$ python gallons.py Gallons: 2 That's 7.58 liters.
2a) What is the value and type for each of the following
expressions? Try them in
python3 to check your answers.
For example, the answer to the first one (
2 + 3) would
5 and type
2 + 3
2.0 + 3
5 - 2 * 3
"Swat" + "CS"
7 // 2
7 % 2
2b) What sequence of values does
3) Write a program that takes a user’s hotel room rate and outputs the cost after adding the 10% city tourism fee. The program should then output the total bill.
$ python bill.py Room rate: 100 Total nights: 3 ------------------- Tourism Fee: $ 30.0 Total: $ 330.0
4) Show the output from the following code fragments:
for i in range(4): print(i) print("--")
for x in range(6): print("x =", x) print("done!")
n = 6 ch = "a" for i in range(1, n+1): print(str(i) + " " + ch*i)
r = 0 n = 6 for i in range(n): r = r * i print(r)
5) Write a program that asks the user for their name and a number (
then prints out their name
$ python name.py name: cs21 n: 6 cs21 cs21 cs21 cs21 cs21 cs21