Python SyntaxError: Invalid Character '，' (U+FF0C) in File '2.py'

This error message indicates that there is an invalid character (in this case, a Chinese comma '，') in line 28 of your Python code file '2.py'. Python only recognizes ASCII characters and some Unicode characters, but not all Unicode characters.

To fix this error, you need to replace the invalid character with a valid one, such as a regular comma ','.