Global Variables

Global Variables

1. 1. How does the random.randint(_,_) work?

   • random.randint(_,_) works by returning an random integer value that is between the two numbers within the parentheses.
     • random.randint(2,10) will return a random number between and including 2 and 10.

2. 2. What is "random" and what is the purpose of using the period (.) before randint?

   • "random" is a module that is built into python and has different methods to return random numbers. The period before randint is there to call the method within "random" to return a random integer.
     • Other "random" methods that can be called using the period includes .randrange(_,__) which returns a random number between, but not including the numbers within the parentheses.

3. 3. What does the function print(_) do in the next line of code?

   • print(_) displays the information within the parentheses in the output once the code is run.
     • It will display something resembling: "The numbers generated are: 5 30 75 1700 -50".

4. 4. What is the purpose of the (+) operator in the next line of code?

   • The (+) operator concatenates the strings it is between. Since the line of code is calling on global variables, the (+) operator has to be used to connect the string at the beginning of the print function to the subsequent variables.

5. 5. What is the purpose of the function str(_) in the next line of code?

   • The function str(_) in the next line of code is casting. It creates a string data type from an integer data type.

6. Functions, Declaration and Definition

   • 6. Is the variable (largest) global or local? Why?
     • The variable (largest) is local because the variable was created within a function.
   • 7. What does None mean?
     • None means there is no value or a null value.
   • 8. What is inputValue? Why is it necessary for this function?
     • inputValue is a parameter/argument. It is necessary for this function because the intended purpose of the function is to retrieve numbers based on a value that the user inputs.
   • 9. What does return do?
     • return "returns" the result of a function to the user. In this case, it shows return None which I believe is a placeholder for a variable.
   • Function Calls
     • 10. What is the difference between declaring, defining, and calling a function?
       • Declaring a function is when you state what data type the function is. There are no declarations in python I believe. Defining a function is creating the function. Calling a function is actually executing the code within the function.
     • 11. How was the variable message built?
       • The variable message was built by updating the string stored in the variable. In each line, more strings are added on while still preserving the original message.