第三次作业（tainanl）
个人信息
杨昀昊
2017*****1008
https://gitee.com/yyh0322/disancizuoyaaaaaaa/tree/master
读文件到缓冲区
def process_file(dst):
try: # 打开文件
l = open(dst, 'r')
except IOError as s:
print (s)
return None
try: # 读文件到缓冲区
bvffer=l.read()
except:
print ("Read File Error!")
return None
l.close()
return bvffer
统计单词频率
def process_buffer(bvffer):
if bvffer:
word_freq = {}
下面添加处理缓冲区 bvffer代码，统计每个单词的频率，存放在字典word_freq
for i in bvffer.split():
word1 = i.strip(punctuation + " ")
if word1 in word_freq:
word_freq[word1] += 1
else:
word_freq[word1] = 1
return word_freq
def output_result(word_freq):
if word_freq:
sorted_word_freq = sorted(word_freq.items(), key=lambda v: v[1], reverse=True)
for item in sorted_word_freq[:10]: # 输出 Top 10 的单词
print(item)
主函数
if name == "main":
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('dst')
args = parser.parse_args()
dst = args.dst
bvffer = process_file(dst)
word_freq = process_buffer(bvffer)
output_result(word_freq)
性能分析
执行次数最多：word1 = i.strip(punctuation + " ")
执行时间最长：ocess_buffer(bvffer):函数
总结与反思
本次学习运用到了python的结构性技巧，很充实！！！
