import os

def fibonacci(threshold):
    # Assign a start value for sequence
    current = 1
    previous = 0

    # Iterate fibonacci sequence as long as value is lesser than x
    while current <= threshold:
        # Print current value
        print(current)
        # Calculate new value from current value + previous value
        new = current + previous
        # Store the current value for next iteration
        previous = current
        # Store the new value as the current value
        current = new

# Clear screen
os.system("clear")  # Mac or Linux
# os.system("cls")  # Windows

# Call function fibonacci()
fibonacci(1024)