2.安装Spark与Python练习
作者：互联网
一、安装Spark
配置文件
试运行Python代码
二、Python编程练习：英文文本的词频统计
1. 准备文本文件
2.读文件
path='/home/hadoop/wc/f1.txt' with open(path) as f: txt=f.read()
3.预处理
大写转小写
txt = txt.lower()
标点符号
点击查看代码
for ch in '!"@#$%^&*()+,-./:;<=>?@[\\]_`~{|}':
txt=txt.replace(ch," ")
words = txt.split()
停用词
stop_words = ['so','out','all','for','of','to','on','in','if','by','under','it','at','into','with','about','i','am','are','is','a','the','and','that','before','her','she','my','be','an','from','would','me','got'] lenwords=len(words)
4.统计每个单词出现的次数
点击查看代码
counts = {}
for word in afterwords:
counts[word] = counts.get(word,0) + 1
items = list(counts.items())
items.sort(key=lambda x:x[1],reverse=True)
i=1
while i<=len(items):
word,count = items[i-1]
print("{0:<20}{1}".format(word,count))
i=i+1
5.按词频大小排序
点击查看代码
for i in range(lenwords):
z=1
for j in range(len(stop_words)):
if words[i]==stop_words[j]:
continue
else:
if z==len(stop_words):
afterwords.append(words[i])
break
z=z+1
continue
点击查看代码
f1= open("test01.txt", "w",encoding='UTF-8')
f1.write(str(items))
print("文件写入成功")
标签：Python,items,代码,练习,stop,words,Spark,txt,counts 来源： https://www.cnblogs.com/yyxxll/p/15954420.html