Coursea-py4e-ex_09_04中的代码解析-字典-dictionary

// An highlighted block
'''
9.4 Write a program to read through the mbox-short.txt and
figure out who has sent the greatest number of mail messages.
The program looks for 'From ' lines and
takes the second word of those lines as the person who sent the mail.
The program creates a Python dictionary that
maps the sender's mail address to a count of the number of times they appear in the file.
After the dictionary is produced,
the program reads through the dictionary using a maximum loop to find the most prolific committer.
'''


name = input("Enter file:")
if len(name) < 1 : name = "mbox-short.txt"
handle = open(name)
count = dict()    #初始化一个字符串
greatkey = None   #不赋予其任何类型
greatvalues = None
#将文件按行打开，并找到其中以From开头的行，取出此行中的第二个字符串并对其进行计数操作
for line in handle:
    words = line.split()
    if len(words)<3 or words[0]!='From':    #并找到其中以From开头的行
        continue
    count[words[1]] = count.get(words[1], 0) + 1   #计数
#遍历字典中的每一个键和值，找出值最大的键值对，
for k,v in count.items():
    if greatvalues is None or v>greatvalues:   #找出值最大的键值对
        greatkey = k
        greatvalues = v
print(greatkey,greatvalues)

总结：本章主要介绍了字典的使用方法，确实是很有用的一个数据结构，用来做数据分析很有用。可以计算出现最多的字符串。

疑问：但似乎这种分割方法对中文并不适用，因为因为英文每个单词之间用空格隔开，但是中文每一个字都是独立的，那么问题来了！要如何拆解中文中的字词呢？