SyntaxError: invalid syntax

[amritabithi]

In Python3:

amrita:~/wifi-heatmap$ python3 wifi-heatmap.py 
  File "wifi-heatmap.py", line 28
    print "Resolution: %0.2f x %0.2f" % (num_x, num_y)
          ^
SyntaxError: invalid syntax

In Python 2:

amrita:~/wifi-heatmap$ python wifi-heatmap.py 
  File "wifi-heatmap.py", line 28
    print "Resolution: %0.2f x %0.2f" % (num_x, num_y)
          ^
SyntaxError: invalid syntax