2.安装Spark与Python练习

一、安装Spark

检查基础环境hadoop，jdk

 

配置文件

 

 

 

 

启动spark

 

 

二、Python编程练习：英文文本的词频统计

　　准备文本文件（txt）

 

 

txt = open("text.txt", "r",encoding='UTF-8').read()
txt = txt.lower()
for ch in '!"@#$%^&*()+,-./:;<=>?@[\\]_`~{|}':
    txt=txt.replace(ch," ")
words = txt.split()
stop_words = ['so','out','all','for','of','to','on','in','if','by','under','it','at','into','with','about']
lenwords=len(words)
afterwords=[]
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
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
    txt= open("bumi001.txt", "w",encoding='UTF-8')
txt.write(str(items))
print("文件写入成功")