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Chapter 6
Here's an excerpt from The Lord of the Rings, J.R.R. Tolkien:
Three Rings for the Elven-kings under the sky,
Seven for the Dwarf-lords in halls of stone,
Nine for Mortal Men, doomed to die,
One for the Dark Lord on his dark throne
In the Land of Mordor where the Shadows lie.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them.
In the Land of Mordor where the Shadows lie.
- J.R.R. Tolkien's epigraph to The Lord of The Rings
The word the appears nine times in this quote, while the words in, for, to, and one
each appear four times. The word ring appears three times, as does the word of.
We can create a dataset from this, choosing a subset of words and counting
the frequency:
Word the one ring to
Frequency 9 4 3 4
We can use the counter class to do a simple count for a given string. When counting
words, it is normal to convert all letters to lowercase, which we do when creating the
string. The code is as follows:
s = """Three Rings for the Elven-kings under the sky,
Seven for the Dwarf-lords in halls of stone,
Nine for Mortal Men, doomed to die,
One for the Dark Lord on his dark throne
In the Land of Mordor where the Shadows lie.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them.
In the Land of Mordor where the Shadows lie. """.lower()
words = s.split()
from collections import Counter
c = Counter(words)
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