[ How can I configure ipython to display integers in hex format? ]
Here's the default behavior:
In [21]: 255
Out[21]: 255
And here's what I would like:
In [21]: 255
Out[21]: FF
Can I setup ipython to do that?
Answer 1
You can do this by registering a special display formatter for ints:
In [1]: formatter = get_ipython().display_formatter.formatters['text/plain']
In [2]: formatter.for_type(int, lambda n, p, cycle: p.text("%X" % n))
Out[2]: <function IPython.lib.pretty._repr_pprint>
In [3]: 1
Out[3]: 1
In [4]: 100
Out[4]: 64
In [5]: 255
Out[5]: FF
If you want this always-on, you can create a file in $(ipython locate profile)/startup/hexints.py
with the first two lines (or as one to avoid any assignments):
get_ipython().display_formatter.formatters['text/plain'].for_type(int, lambda n, p, cycle: p.text("%X" % n))
which will be executed every time you start IPython.