CSE 2050: Week 1
File path - ANS-The location of a file in a file system. Looks something like a\b\c\d
where a contains b contains c contains d, and where are currently at directory/file d
File - ANS-A document that is stored on your computer; the file extension (.py, .exe,
.jpeg) tells you the format and tells your computer how to interpret the data
Directory - ANS-a folder that contains other directories and files
Hierarchical File System - ANS-(HFS).A system in which data is stored hierarchically in
directories and subdirectories (as in MiDOS), or folders within folders (as in Macintosh).
Most operating systems have hierarchical file systems.
Root Directory - ANS-the top of the hierarchical file system
Subdirectory - ANS-Aka child directory, a directory/folder contained in another directory
or folder
Parent Directory - ANS-The directory that contains your current file / directory; is 1 level
closer to the root directory
Terminal - ANS-A text based interface to the computer; used to navigate file systems,
communicate with the Operating System, run programs
Integrated Development Environment (IDE) - ANS-Provides a developer with a way to
create a program, run the program, and debug the program all within one application; in
CSE 2050, we mainly use VS Code
VS Code - ANS-a free, open-source IDE created by Microsoft; installed on lab
computers for this class; Visual Studio is a bulkier version of VS Code with more
functionality, but in this class we will be using VS Code
Gradescope - ANS-Website where homework, lab, and exam code will be submitted;
the auto-grader is responsible for your lab, but exams and homeworks will be partially or
fully manually graded by TAs and Professors
Function Definition - ANS-statement that creates a new function, specifying its name,
parameters, and the statements it executes. ex:
, def my_func(param1, param2):#this line is the function definition
""" Docstring goes here, my_func does XXX, params do XXX"""
#Body of the function goes here
return returnVal # this terminates the function
NOTE: Python uses indentation to determine scope, no curly braces!
Default parameters - ANS-allows some parameters to be optional, but must go last in
the parameter list; If the caller does pass an argument, the parameter takes the value
passed in by the caller (the normal way functions work); If the caller chooses not to fill
that argument slot, the parameter takes its default value
def say_hello(name="world"): # defualt val is "world"
def add(num1, num2, num3 = 0, num4=0): #can add 2 to 4 nums
Formatted string - ANS-Aka f-string, a template which allows to insert variable values
into a string; uses curly braces to insert var names; ex:
name = 'Alice'
num_days = 10
print(f"{name} has been in Wonderland for {num_days} days.")
# will print "Alice has been in Wonderland for 10 days."
Docstring - ANS-A special comment located at the beginning of a function or program
whose goal is to explain the code, its inputs and outputs; enclosed in triple quotes ''' like
this ''' or """ like that """
How to Save Code - ANS-Ctrl+S on windows, Cmd+S on MacOS; Used to save your
code to the most recent version; your code may not work as expected if you do not save
it! Worst case scenario you lose your progress
LeetCode - ANS-Website for coding interview preparation; most technical coding
interviews will take problems from the repository on this website or make slight
modifications; Most of the topics in LeetCode will be introduced in CSE 2050; practicing
your skills here is a great way to help with the course and your career
Atomic Type - ANS-fundamental datatypes in Python that cannot be broken down into
smaller types; Python has bool, int, float
bool - ANS-variable that can either be True or False; True == 1 whereas False == 0
int - ANS-integer (whole number) data type in Python
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