You can use %pprint command to turn on/off pprint feature:
In [1]: range(24)
Out[1]:
[0,
1,
2,
...
21,
22,
23]
In [2]: %pprint
Pretty printing has been turned OFF
In [3]: range(24)
Out[3]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23]
If you want to turn off pprint permanently, make a profile, and add c.PlainTextFormatter.pprint = False to the profile file.
Linux example:
$ ipython profile create
[ProfileCreate] Generating default config file: '.../ipython_config.py'
[ProfileCreate] Generating default config file: u'..../ipython_notebook_config.py'
$ echo 'c.PlainTextFormatter.pprint = False' >> ~/.ipython/profile_default/ipython_config.py