def main():
#global gTotalAge
studentlist = BST()
count = 0
########## Inserting ##########
A = open('InsertNames.txt', 'r')
start_time = time.time()
FirstTime = True
for line in A:
count += 1
w = line.split()
pupil = Student(w[0], w[1], w[2], w[3], w[4])
#averageage += int(w[4])
unique = True
if FirstTime == False:
if studentlist.Exists(pupil):
print "ERROR. Student:", w[0], w[1], " already entered."
unique = False
FirstTime = False
if unique == True:
studentlist.Insert(pupil)
print "The time taken for inserting students is :", time.time(
) - start_time
########## Traversing ##########
start_time = time.time()
#gTotalAge = 0.0
totalAge = studentlist.Traverse(AverageAge)
print "The average age for the students inserted is :", totalAge / studentlist.Size(
) ##len(studentlist)
print "The time taken for travering students is :", time.time(
) - start_time
########## Deleting ##########
start_time = time.time()
B = open('DeleteNames.txt', 'r')
for line in B:
if not studentlist.Delete(Student('', '', line.strip(), '', '')):
print "Error! could not delete student with SSN: ", line.strip()
Dtime = time.time() - start_time
print "The time taken for the students deleted is :", Dtime
########## Retrieving ##########
start_time = time.time()
RAge = 0.0
counter = 0.0
C = open('RetrieveNames.txt', 'r')
for line in C:
Rstudent = studentlist.Retrieve(Student('', '', line.strip(), '', ''))
print Rstudent
if Rstudent:
RAge += int(Rstudent.getAge())
counter += 1
else:
print "Count not retrieve student with SSN: ", line.strip()
print "The average age for the students retrieved is :", RAge / counter
print "The time taken for the retrieved students is :", time.time(
) - start_time
print "Done!"
