
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a python program that implements at least 3 functions and does the following:
- Create a global variable and use the same variable name inside each of your functions.
- In one function, update the contents of the global variable:
- Do this once specifically referencing the global variable
- test the assignments using mutable objects - Do this once specifically not referencing the global keyword
- Do this once specifically referencing the global variable
- In one function, update the contents of a mutable object (the calling variables contents should be different after the function is executed)
- In one function, set the variable to an immutable object
- In one function, set the variable to a new mutable object, change the value of the object and show that it's different inside the function and the original object is unchanged after the function call
- For each variable show it's value:
- before the function call;
- before it's changed within the function;
- after it's changed within the function;
- and after the function call.
- Provide an explanation for any behavior.
- Call one function from within another function:
- explain what variables are affected in this context.
- Demonstrate a scenario where a function called from within a function changes the contents of a mutable object in the global scope WITHOUT using the global keyword or specifically referencing the global variable.
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