Applying a function to values in dict

dictionary, python

Solution

If you're using Python 2.7 or 3.x:

d2 = {k: f(v) for k, v in d1.items()}

Which is equivalent to:

d2 = {}
for k, v in d1.items():
    d2[k] = f(v)

Otherwise:

d2 = dict((k, f(v)) for k, v in d1.items())

Problem

I want to apply a function to all values in dict and store that in a separate dict. I am just trying to see how I can play with python and want to see how I can rewrite something like this ``` for i in d: d2[i] = f(d[i]) ``` to something like ``` d2[i] = f(d[i]) for i in d ``` The first way of writing it is of course fine, but I am trying to figure how python syntax can be changed

Original source