indexerror: list index out of range??

[Titiksha Joshi]

Hi,
I am working on the following code but am getting the error: list index out of range. I surfed through the group but somehow I am not able to fix my error.Please guide.Structure is given below:
m is a list of 5 elements. I have to match elements of m from fields in file ALL_BUSES_FINAL.cvs.
m=['631138', '601034', '2834', '2908', '64808']

i=0
while i<len(m):
    print(i)
    my_file = open("ALL_BUSES_FINAL.csv", "r+")
    for line in my_file:
        if m[i] in line:
            print (line)
            a.append(line)
            i+=1
            print(a)
    my_file.close()


The output is as follows:
0
LAKEFLD  3227,631138

['LAKEFLD  3227,631138\n']

1
NOBLES   3013,601034

['LAKEFLD  3227,631138\n', 'NOBLES   3013,601034\n']

2
GR_ISLD  I,2834

['LAKEFLD  3227,631138\n', 'NOBLES   3013,601034\n', 'GR_ISLD  I,2834\n']

FTTHOMP  928,2908

['LAKEFLD  3227,631138\n', 'NOBLES   3013,601034\n', 'GR_ISLD  I,2834\n', 'FTTHOMP  928,2908\n']

VICTRYH  15,64808

['LAKEFLD  3227,631138\n', 'NOBLES   3013,601034\n', 'GR_ISLD  I,2834\n', 'FTTHOMP  928,2908\n', 'VICTRYH  15,64808\n']
Traceback (most recent call last):
  File "C:\Users\TJ\dist_tracking.py", line 40, in <module>
    if m[i] in line:
IndexError: list index out of range
>>> 

I see the line,a being correct but print (i) does not show up after 2. and index error comes up. I am too confused now. Please guide.
Thanks in advance.