Hello World! - codepath/compsci_guides GitHub Wiki

Unit 1 Session 1 (Click for link to problem statements)

U-nderstand

Understand what the interviewer is asking for by using test cases and questions about the problem.

• Will I need all 3 provided lines of code?
  • Yes.
• Will one line be used more than once?
  • No, each line will be used only once.
• Are the lines already properly indented?
  • No, you will need to determine the appropriate indentation for each line.

P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea: Put the lines of code in order to write and call a function that prints a message.

1) Create a new function by writing a function signature
2) Inside the function body, print "Hello World" to the console
3) Call the created function

⚠️ Common Mistakes

• Unlike some other coding languages, in Python, function calls must happen after the function is defined.

I-mplement

def hello_world(): # Function signature
	print("Hello world!") # Function body. Will print "Hello world!" to the console

hello_world() # Function call