Database System Concepts
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
  • 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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