<p>I don't care what the differences are.  I just want to know whether the contents are different.</p>

The low level way:
```
```
from __future__ import with_statement
with open(filename1) as f1:
   with open(filename2) as f2:
      if f1.read() == f2.read():
         ...
```
```
The high level way:
```
```
import filecmp
if filecmp.cmp(filename1, filename2, shallow=False):
   ...
```
```