Tutorial 12/15 REUSABLE CODE

Python: Functions

Grouping code together and giving it a name.

The Hook

Think about a TV remote.

You press "Power". You don't need to know the circuit logic; you just press the button and it does the job.

Functions are like buttons. We group instructions, name the "button", and press it whenever we need it!

Defining and Calling a warning routine.

# 1. Define the Button

def warn_user():

print("Warning!")

print("System Overload")

# 2. Press the Button

warn_user()

Logic Gate

Order matters! What prints first?

def alpha():
print("A")

def beta():
print("B")

beta()
alpha()

Level 31: Bronze

"Change the sing() function to print 'La' three times."

def sing():
    print("La")

sing()

> bronze_stream_standby

Level 32: Silver

"The engine define but never runs. Call the function at the bottom of the code."

def start_engine():
    print("Vroom!")
    print("Engine Started")

# Call it here:

> debugger_module_monitoring

Level 33: Gold

Independent Construction Pattern

> computation_vector_online