第三次作业

学号：2017*****7175
姓名：刘振林
2.

filename： word_freq.py

阅读注释，在所有pass处删除pass，添加代码

from string import punctuation

 # 读文件到缓冲区

def process_file(dst):
try:
L=open(dst,"r") # 打开文件
except IOError as s:
print (s)
return None
try:
bvffer = L.read() # 读文件到缓冲区

except:
    print ("Read File Error!")
    return None
L.close()

return bvffer

def process_buffer(bvffer):
if bvffer:
word_freq = {}

    # 下面添加处理缓冲区 bvffer代码，统计![](https://img2018.cnblogs.com/blog/1627240/201904/1627240-20190404204441698-1444066431.jpg)

单词的频率，存放在字典word_freq
for i in bvffer.split():
word_666 = i.strip(punctuation + " ")
if word_666 in word_freq:
word_freq[word_666] += 1
else:
word_freq[word_666] = 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]:
print(item)

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)
3.

4.

5.本次作业也让我更加熟练地运用python和Git