This is the solution to task 1 and 2!

task1_2.py

"**** DON't FORGET TO HIT +1 ****  It really helps."

import random
def quiz():
	no_of_ques=3
	name_of_stud=raw_input("Please Enter Your Name: ").upper()
	score=0
	score2=range(no_of_ques)
	for i in range(no_of_ques):
		no1,no2,operator=random.randint(1,10),random.randint(1,10),random.choice(["+","-","*"])		#Generating random numbers and an operator.
		real_ans={"+":(no1+no2),"-":(no1-no2),"*":(no1*no2)}[operator]		#Generating the answer	
		print("\nQ%d. What is %d %s %d?" %((i+1),no1,operator,no2))
		user_ans=input("Enter your answer: ")
		if(user_ans==real_ans):
			print("Yeah! You are right!")
			score+=1
			score2[i]=1
		else:
			print("I'm afraid your answer is incorrect and  %d %s %d = %d" %(no1,operator,no2,real_ans))
			score2[i]=0
	avg_score=float(score)/float(no_of_ques)
	return (name_of_stud,score,score2[-3:],avg_score)

def main():
	class1_data,class2_data,class3_data=[],[],[]
	no_of_students=[input("Enter no. of students in class 1: "),input("Enter no. of students in class 2: "),input("Enter no. of students in class 3: ")]
	for i in range(3):
		print("Class %d" %(i+1))
		current_class={0:class1_data,1:class2_data,2:class3_data}[i]
		for j in range(no_of_students[i]):
			print("Student %d" %(j+1))
			current_class.append(quiz())
	fil=open("studentdata.txt","w")
	for x in class1_data:
		class1_data[class1_data.index(x)]=str(x)
	for x in class2_data:
		class2_data[class2_data.index(x)]=str(x)
	for x in class3_data:
		class3_data[class3_data.index(x)]=str(x)
	text=""
	if len(class1_data):
		text="*GS*00885*".join(class1_data)+"\n"
	else:
		text+="('', 0, [0, 0, 0], 0.0)\n"
	if len(class2_data):
		text+="*GS*00885*".join(class2_data)+"\n"
	else:
		text+="('', 0, [0, 0, 0], 0.0)\n"
	if len(class3_data):
		text+="*GS*00885*".join(class3_data)
	else:
		text+="('', 0, [0, 0, 0], 0.0)\n"
	fil.write(text)
	fil.close()
	print "Data Successfully Written to 'studentdata.txt'"
main()