[Tutor] TypeError: object doesn't support item assignment [ Trying to learn how to enter value in array ]

[John Joseph]

Hi All
   I am trying to write a program in  which I enter
the no of students and then for the students I enter
the marks and later on Display the marks 
The script which I wrote is  given below , when I run
the program I get error 
“TypeError: object doesn't support item assignment “ ,
my aim in doing  this program is to learn how to enter
values in a array , please advice  how can I avoid
this error
           Guidance requested 
                   Thanks 
                     Joseph 

##################################################################
# This program is to learn how u enter entry to the
array
# And how u print it ,


print " \nFirst Enter the No of Students ... "
print "\n Then No of marks "

# defining empty array a
a = ()
# defining i
i = 0

# n is the No of  students which I have to enter the
marks
n = int(raw_input("Enter the no: of students :  \n"))


# m is the Marks of the students which I have to enter
while i < n:
        m = int(raw_input("Enter the Marks for the
students :  \n"))
        a[i] = m
        print "Marks are ", m
        i = i+1

#print "Array Marks ", a[i]





		
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