Final answer:
The code demonstrates how to access individual characters in a string using indexing in Python.
Step-by-step explanation:
The given code is a python code that demonstrates how to access individual characters in a string. In python, you can access individual characters of a string using indexing. In this case, the string variable 'a' contains the value 'Hello, World!'. When we access the character at position 1 (remembering that the first character has the position 0), Python returns the character 'e' as the output.