What is the Most Efficient Way of Printing A Dict's Contents Out In Columns?

[Zachary Dziura]

I have a dict that I would like to print out in a series of columns,
rather than as a bunch of lines. Normally when you do print(dict), the
output will look something like this:

{'Header2': ['2', '5', '8'], 'Header3': ['3', '6', '9'], 'Header1':
['1', '4', '7'], 'Header4': ['10', '11', '12']}

I can then iterate through (in this case) a list of the headers in
order to produce something similar to this:

Header1 = ['1', '4', '7']
Header2 = ['2', '5', '8']
Header3 = ['3', '6', '9']
Header4 = ['10', '11', '12']

What I want to know is how I can print out that information in a
column, where the header is the first line of the column, with the
data following underneath, like so:

Header1        Header2        Header3        Header4
1                  2                  3                   4
5                  6                  7                   8
9                  10                11                 12