import error in python

I get the following error

Traceback (most recent call last):
File "myemail.py", line 1, in <module>
  import smtplib
File "/usr/lib/python2.6/smtplib.py", line 46, in <module>
  import email.utils
File "/home/nikhil/Desktop/bujji/email.py", line 2, in <module>
ImportError: No module named MIMEMultipart

when i run the code example

I tried to google out the error but nothing worked.