[SOLVED] Cse2050 mod 1 lab – python fundamentals

This lab will walk you through the process of:
• navigating your computer’s file structure
– create new files and folders
• writing python code
• running python code
This lab is cooperative – talk with your partner as you go through, and make sure you are progressing together.
It is fine for only one person to be coding during lab while the other looks on and discusses what’s happening
– this is called pair programming. Make sure to share the files at the end, since both lab partners must
submit individually to recieve credit.
Part 1 – Setup your filesystem
All modern operating systems use a hierarchal file structure. We can think of this as a tree – the top level
directory, often referred to as root, contains all the files and folders on your computer. The exact names of
various folders changes based on your operating system, but the general structure is a root directory which
contains both the files necessary for various prorams to run and the files created and used by individual users:
It’s often nice to collapse this visual diagram to a text-based one, like this:
|root
| |program files
| | |python
| | |–python.exe
| | |–(other files/folders)
| |
| | |discord
| | |–discord.exe
| | |–(other files/folders)
| |
| | |firefox
1
| | |–firefox.exe
| | |–(other files/folders)
|
| |users
| | |jake
| | | |documents
| | | |–Resume.docx
| | | |–Grades.xls
| | | |–(other files/folders)
| | |
| | | |pictures
| |
| | |rachel
| | | |documents
(omitted for space)
For this class, we want to create a folder called cse2050 in your user’s directory. On your lab PC, your
username will be your netID (e.g. jas14034). Then, create a subfolder called labs, and another called lab1.
Put a file called hello.py inside of that folder. Your ultimate file structure should look something like this:
|root
| |users
| | |jas14034
| | | |cse2050
| | | | |labs
| | | | | |lab1
| | | | | |–hello.py
| (other users omitted)
|
| |program files
| | (program files omitted)
Open the folder lab1 in an integrated developing environment (IDE) of your choice, add some code to print
something out, and run it. The lab PCs include Visual Studio and Spyder as IDEs, and you are free to use
whatever you want on your local PC for homework assignments.
This can all be a little overwhelming the first time you see it. If you’re not sure how to create a folder on
your computer, ask around – another classmate or your TA can help. It’s important that we get used to
asking each other for help; it will make the rest of this course much smoother.
You can also see the attached video VisualStudio_hello.mp4 to see how to create a folder, open it, create
a file in that folder, write some code, and run it on the lab PCs using Visual Studio.
STOP – at this point, you and your partner should be able to navigate the file structure on your computer,
including creating files. You should also be able to write a basic python script, run it, and see its output.
Make sure you are comfortable with the above (ask classmates or the TA if you need assistance) before
moving on.
2
Figure 1: Workspace set up video
Part 2 – Modifying ‘hello.py“
Now that your comfortable with your comptuer’s file system, it’s time to write some more intricate Python
code. Add a function say_hi() to the file hello.py you created in Part 2. This function should just return
the string Hello, world for now.
def say_hi():
return “Hello, world”
Part 3 – Submit code to Gradescope
Next, we’ll submit our code to Gradescope. Click the Gradescope link in HuskyCT, then select the appropriate
assignment. Submit the file hello.py you made earlier.
The autograder takes a minute or two to run. Once it completes, you should see 10/100 points for this
assignment if hello.py is correct. Read over the error messages for the test cases you failed to get an idea
of why they failed (largely, they depend on the file lab1.py, which you have not yet created and did not
submit.)
STOP – make sure your partner is done here before continuing.
Rinse and repeat
Now, we’ll continue to work on our code and re-submit until we pass all test cases. To complete this
assignment, create a new file called lab1.py. This file should have a single function named generic_hi()
3
which takes one argument: a name to add to the return string:
>>> generic_hi(‘jake’)
‘Hello, jake!’
>>> generic_hi(‘greninja’)
‘Hello, greninja!’
>>> generic_hi()
‘Hello, world!’
Note that your function needs a default value (‘world’ in this case) to plug in to the return string if the
user does not specify one.
External Modules
Do not use any imported modules (math, collections, . . . ) when implementing functionality. It
is okay to use imported modules for testing.
It is okay to import modules you write yourself; e.g. any data structures you write yourself.
Submitting
STOP!. Before you go, make sure to backup your files using a cloud service like Onedrive.
At a minimum, submit the following files for this lab:
• hello.py
• lab1.py
Students must submit individually by the due date (typically, Friday at 11:59 pm EST) to receive credit.