This is not valid Python code but should be accepted as plain text.
It contains various characters that might cause issues with the Python lexer.
For example, this line has some special characters: ☺ ☃ ♠ ♣
And some control characters like            
And some Unicode characters beyond ASCII: 你好, こんにちは, 안녕하세요
This is a line with a lot of text that might trigger the issue: 
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. 
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.