Question

Given the following table: Key Student Number (0-99) 15 25 19 Value Grade (%) 57.8 92 74.3 a) Write code to initialize a list of tuples containing these values. b) Write code to append student 23 with grade 82 to the list, two different ways. c) Write code to find out if student 33 is in the list, two different ways. d) Write code to find out if grade 55 is in the list, two different ways.

Answer 1

Code:

grades = [(15,57.8),(25,92),(19,74.3)] #creating list of tuples from given table

#method 1 to append student 23 and grade 82

grades.append((23,82))   

#method 2 to insert student 23 and grade 82

grades.insert(len(grades),(23,82))

#method 1 to check student 33 is in grades

print("Student is present") if len([val for val in grades if val[0] == 33]) else print("Student is not present")

#method 2 to check student 33 is in grades

print("Student is present") if len([(st,gr) for st,gr in grades if st == 33]) else print("Student is not present")

#method 1 to check 55 is in grades

print("Grade is present") if len([val for val in grades if val[1] == 55]) else print("Grade is not present")

#method 2 to check 55 is in grades

print("Grade is present") if len([(st,gr) for st,gr in grades if gr == 55]) else print("Grade is not present")

Code and Output screenshots:

grades = [(15,57.8), (25,92), (19,74.3)] #creating list of tuples from given table #method i to append student 23 and grade 82 grades.append( (23,82)) #method 2 to insert student 23 and grade 82 grades.insert (len (grades), (23,82)) #method i to check student 33 is in grades print("Student is present") if len([val for val in grades if val[0] == 33]) else print ("Student is not present") #method 2 to check student 33 is in grades print("Student is present") if len([(st, gr) for st, gr in grades if st == 33]) else print("Student is not present") #method i to check 55 is in grades print ("Grade is present") if len([val for val in grades if val[1] == 55]) else print("Grade is not present") #method 2 to check 55 is in grades print("Grade is present") if len([(st,gr) for st,gr in grades if gr == 55]) else print ("Grade is not present")

Student is present Student is present Grade is not present Grade is not present

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