import __________ # statement 1
rec = []
while True:
rn = int(input("Enter"))
nm = input("Enter")
temp = [rn, nm]
rec.append(temp)
ch = input("Enter choice (Y/N)")
if ch.upper() == "N":
break
f = open("stud.dat", " __________ ") # statement 2
__________.dump(rec, f) # statement 3
__________.close() # statement 4f=open("demo.txt","r")
print(f.tell())f=open("demo.txt","w+")
f.write("Welcome to Python")
f.seek(5)
a=f.read(5)
print(a)