Shouldn't the string being printed not have the extra space, since printing with commas already adds a delimiter of a space?
print('You lose! The number was', 5)
You lose! The number was 5
Instead of what the challenge requests,
print('You lose! The number was ', 5)
which prints two spaces between "was" and 5 (cannot show output, since the forum removes double spaces).
moderator: Check out a previous discussion along these lines, a tad higher up!