Show Invalid Characters

s = """Put your submission here between the triple quotes for testing.
This is a sample multiline string with a backspace char \b to show how
any errors you have will be displayed"""

# ord finds the numeric value of a character for testing
valid_chars = [9,10,11,12,13] + list(range(32, 127))
all_valid = True
print()
for i, c in enumerate(s):
    if ord(c) not in valid_chars:
        all_valid = False
        print("Oops, character", c, "with ordinal value:", ord(c), "at position", i)
        print("Its the middle char here: ", '"' + s[i-7: i] + '_' + s[i+1: i+8] + '"')
print(f"\nAll characters were {'' if all_valid else 'NOT '}valid printable ASCII")