What are the scope and lifetime of variables in Python?

Can you explain what scope means in Python?

In Python, scope refers to the region of the program where a variable is accessible. There are four types of scope: local, enclosing, global, and built-in.

What about the lifetime of a variable?

The lifetime of a variable is the duration for which the variable exists in memory. In Python, a variable's lifetime is tied to its scope; it exists as long as the scope is active.

Can you give me an example of local and global variables?

Sure! A local variable is defined within a function and can only be accessed inside that function. A global variable is defined outside any function and can be accessed anywhere in the code.

How do I know if a variable is local or global?

You can determine a variable's scope by its declaration location. If it's declared inside a function, it's local; if outside, it's global.