Python Lab 1B: Mixed Fractions
Due Tuesday, September 7th, by 11:45pm
Introduction
Welcome to your second Python lab in CSCI 101! This lab, as well as
Lab 1A, need to be submitted to Gradescope by the due date.
You will submit each lab
separately, as a single .py file.
To get started, open IDLE and then create a New File via the File menu. We
suggest you immediately save this file in some directory you create that you will use to
store/manage all
your Python Labs this semester (e.g., CSCI101/PythonLabs). Save this file as
Lab1B-mixed_fractions.py.
Assignment
An improper fraction is a fraction with a larger number in the numerator than in the denominator (e.g. 27/11).
A mixed fraction is an improper fraction shown as a whole number with a proper fraction (e.g. 27/11 -> 2 5/11).
Write a Python program that converts (possibly) improper fractions into mixed fractions. A couple of hints:
- Use some of the new operators that you have learned in this class for the calculations.
- F-string formatting will help you output the mixed fraction correctly.
For 102 students: we suggest you complete the CSCI 102 labs this week before this CSCI 101 lab.
Lab I/O Format
For lab assignments this semester, a specific Lab
Input/Output Format is required. This format
is described below:
- When prompting for input, use the prompt string
WORD>, where WORD
is a single, uppercase word which describes the input. For
example, this lab might choose: NUMERATOR>
and DENOMINATOR>.
- When providing output that will be graded, start the line
with the word
OUTPUT followed by exactly one space, e.g. OUTPUT .
Think of this as "boxing your answer" on a math worksheet; it lets us quickly
find your answer. Gradescope will skip any output
lines that do not start with OUTPUT.
- You are welcome to have other output lines that do not
begin with OUTPUT; Gradescope
will ignore these.
- A submission without exactly correct output formatting will receive an AUTOMATIC ZERO.
This is because Gradescope is automated—it does not look at your code, only the results, and thus
the format of the results must be consistent for all students.
Example Execution 1
Input the numerator of the improper fraction.
NUMERATOR> 46
Input the denominator of the improper fraction.
DENOMINATOR> 7
46/7 as a mixed fraction is:
OUTPUT 6 4/7
Example Execution 2
Input the numerator of the improper fraction.
NUMERATOR> 246000000000000
Input the denominator of the improper fraction.
DENOMINATOR> 9840000000000
246000000000000/9840000000000 as a mixed fraction is:
OUTPUT 25 0/9840000000000
Example Execution 3
Input the numerator of the improper fraction.
NUMERATOR> 7
Input the denominator of the improper fraction.
DENOMINATOR> 43
7/43 as a mixed fraction is:
OUTPUT 0 7/43
Gradescope Submission Nuances
When you submit your Python file to Gradescope, multiple different test
cases are run on your code. Passing all of the tests results in a 100% on
the autograded portion of the lab.
You are allowed to submit to Gradescope four
times (or less) for this lab. The maximum grade of your submissions will be your grade for
the lab. Note: If your code doesn’t work (e.g., a syntax error exists,
or an error is thrown in execution), then you will received an AUTOMATIC ZERO. You
should test your code before submitting to ensure it executes correctly.
Comments
All Python files should include a header with your name, section, assignment info, references
(i.e., who did you collaborate with on this assignment?; what resource did you use?), and
approximate time taken to do the assignment. Be sure to cite any allowed external references
used to complete the assignment. Any code without this header will lose 1 point. Here's an example:
# John Henke
# CSCI 101 – Section D
# Python Lab 1B
# References: TA Gabriel helped me in office hours with the math.
# Time: 45 minutes
Submission
Once you are satisfied with your solution to this lab, you need to
submit the file to Gradescope. In Canvas, go to Assignments > Lab1B
and upload Lab1B-mixed_fractions.py.
To receive credit, your code must execute in
Python 3, and you must submit a single file for
the assignment (your Python code file).
In addition, your code must follow the Lab I/O
Format.
Whenever you submit something to Gradescope, we strongly recommend you always double check
what you submitted actually got submitted correctly (e.g., did the file upload correctly?
did you submit the correct file? etc.) If your submission is incorrect, it's on you.
Note: this lab is worth 2 points.
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