摘要：
To choose a random word from the histogram, the simplest algorithm is to build a list with multiple copies of each word, according to the observed fre... 阅读全文
摘要：
Finding the words from the book that are not in the word list from words.txt is a problem you might recognize as set subtraction; that is, we want to ... 阅读全文
摘要：
We have seen built-in functions that take a variable number of arguments. For example range can take one, two or three arguments.It is possible to wri... 阅读全文
摘要：
To find the most common words, we can apply the DSU pattern; most_common takes a histogram and returns a list of word-frequency tuples, sorted in reve... 阅读全文
摘要：
Here is a program that reads a file and builds a histogram of the words in the file: process_file loops through the lines of the file, passi... 阅读全文