I am trying ipywidgets.interact hello world example but the expected element does not show up.
This is the code:
 from __future__ import print_function
 from ipywidgets import interact, interactive, fixed, interact_manual
 import ipywidgets as widgets
 def f(x):
    return x
 interact(f, x= 'test')
These are the session parameters:
CPython 2.7.14
IPython 5.6.0
ipywidgets 7.2.0
compiler   : GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)
system     : Darwin
release    : 15.6.0
machine    : x86_64
processor  : i386
CPU cores  : 4
interpreter: 64bit