Error on import: SyntaxError: source code string cannot contain null bytes

[kirkwilliams2049]

I am following a Python tutorial and have created the following module(from the tutorial) in Notepad under Windows 11:

def fib(n):    # write Fibonacci series up to n
    a, b = 0, 1
    while a < n:
        print(a, end=' ')
        a, b = b, a+b
    print()

def fib2(n):   # return Fibonacci series up to n
    result = []
    a, b = 0, 1
    while a < n:
        result.append(a)
        a, b = b, a+b
    return result

I have saved the module as fibo.py. When I attempt to import the module(import fibo), Python returns the error:

Error:
SyntaxError: source code string cannot contain null bytes

Now when I save the module as kw.py or kirk.py, the import works and calls to the functions in the module also work.

What am I missing here?

Gribouillis write Aug-01-2023, 03:54 PM:
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