Question

Using the Python program be able to identify or discuss the following:

1. A good test plan – how would you determine that it is working?
2. Limitations of the program – what would you do to enhance it?
3. Output improvement – what would you add to improve output?
4. Examples of local variables – name, types, and scope
5. Reason why global variables are not recommended
6. Examples of constants
7. Use of Boolean variable
8. Use of floating point variable
9. Use of integer variable
10. Math operators
11. Use of string variable
12. Conversion from string to numeric
13. Conversion from numeric to string
14. Slicing strings
15. Functions
16. Parameters
17. Return values
18. Driver function
19. Function calls
20. Built in functions
21. Exception handler
22. Validation with if statements
23. While and For loops
24. Number of iterations and stopping conditions
25. Nested loops
26. Lists
27. Subscripts
28. Iterating through a list’s indices or through a list’s values
29. List of lists (tables)
30. File reading and writing
31. Expected program documentation

Answer 1

Python program code-

mobile_model_id=526

mobile_model_name="guru"

print(mobile_model_id, mobile_model_name)

inp1=input("Guess mobile model id ")

inp2=input("Guess mobile model name ")

id1=int(inp1)

if id1==mobile_model_id and inp2==mobile_model_name:

    print("you guessed it right")

else:

    print("sorry try again!")

s = 'HelloWorld'

# slicing syntax str_object[start_pos:end_pos:step]

first_five_chars = s[:5]

print(first_five_chars)

#reverse using slicing

reverse_str = s[::-1]

print(reverse_str)

# list to a list of lists

  

def fun1(lst):

    res = []

    for el in lst:

        sub = el.split(', ')

        res.append(sub)

      

    return(res)

                  

# Driver

lst = ['Ram', 'Sam', 'John']

print(fun1(lst))

#while loop

c = ["yellow", "green", "blue", "pink"]

i = 0

while i < len(c):

    print(c[i])

    i += 1

#for loop

for x in range (10,20):

        if (x == 15): break

        if (x % 2 == 0) : continue          #print odd numbers

        print(x)

# Function which returns x/y

def divi(x , y):

    try:

        c = x/y                    # / division operator

    except ZeroDivisionError:

        print ("x/y result in 0 division error")

    else:

        print (c)

divi(8.0, 2.0)

divi(2.0, 0)

#subscript

SUB = str.maketrans("0123456789", "₀₁₂₃₄₅₆₇₈₉")

"H2SO4".translate(SUB)

'H₂SO₄'

#file reading writing

f= open("abc.txt","w+")

for i in range(10):

    f.write(" %d\n" % (i+1))

f.close()

    #read the contents

f = open("abc.txt", "r")

if f.mode == 'r':

    contents = f.read()

    print (contents)

Ans 1. If the given program is compiled successfully than it does not contain errors however to check correctness output of program we need to design sample test cases.

Ans 2.Python is an object oriented programming language so can enhance program by using Objects and Classes.

Ans 3. Output can be improved by labelling output properly.

Ans 4. Global variables have pros and cons depends on how it is being used.For smaller applications, global variables helps your code to easily pass and access data from other classes and methods but for larger applications, It will make application hard to maintain and read.Encapsulation can't be achieved