Sample

To write a Python script that receives a list as input from the user, you can define a function to handle the input and use a main function to start the script. Below is an example of how you could structure this script:

Define a function to get input: This function will prompt the user to enter elements for the list, likely as a comma$-$separated string, and then convert this string into a list.

Define the main function: This function will call the input function to get the list and perform any additional operations you might need.

Use the if $\_\_$name$\_\_=="\_\_$main$\_\_"$: construct: This ensures that the main function will only execute when the script is run directly $($not when imported as a module$).$

Here is an example Python script that implements these steps:

def get$\_$input$\_$list$()$:

input$\_$string $=$ input$("$Enter elements separated by commas: $")$

input$\_$list $=$ input$\_$string.split$(\text{'},\text{'})$

return $[$element$.$strip$()$ for element in input$\_$list$]$

def main$()$:

user$\_$list $=$ get$\_$input$\_$list$()$

print$("$You entered the following list:"$)$

print$($user$\_$list$)$

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

main$()$

Question $1$: String Manipulation

$$ Main Function: This function takes a string and a delimiter as input, displays the outputs from functions that split the string by the delimiter and counts the number of resulting segments.

$$ Regular Function: Using iterative methods, the string is split into segments based on the delimiter.

$$ Recursive Function: Splits the string into segments based on the delimiter using recursive methods.

Question $2$: Compute Factorial

$$ Main Function: This function receives an integer as input and demonstrates calculating the factorial of this number using both iterative and recursive methods.

$$ Regular Function: Calculates the factorial of a number using an iterative approach.

$$ Recursive Function: Calculates the factorial of a number recursively.

Question $3$: Analyze Prime Numbers

$$ Main Function: This function takes an integer as input and demonstrates the result of checking whether it is a prime number through both iterative and recursive methods.

$$ Regular Function: Checks if a number is prime using an iterative approach.

$$ Recursive Function: This function checks if a number is prime using a recursive method, potentially involving a helper function that reduces the number of checks.

Common Question $($Extra$)$: Data Transformation

$$ Main Function: This function takes a list of integers as input and demonstrates using both a regular and a recursive function to transform each number in the list by multiplying it with a fixed factor.

$$ Regular Function: Multiplies each element in the list by a predetermined factor using a loop.

$$ Recursive Function: Recursively multiplies each element in the list by a predetermined factor.