电脑环境中必须先安装有python3版本，后续才能继续。

1.安装依赖包

pip install hdfs

2.连接

# 连接hdfs服务

from hdfs import InsecureClient

client = InsecureClient('http://192.168.222.118:50070', user='root')

或者

# from hdfs import *

# Client语法规则，详见https://hdfscli.readthedocs.io/en/latest/api.html

# client = Client(url, root=None, proxy=None, timeout=None, session=None)

# client = Client("http://192.168.222.118:50070")

# client = Client("http://192.168.222.118:50070",root="/",timeout=10000,session=False)

3.列出当前目录下的所有文件

print client.list('/')

4.创建新文件，并写入内容

data = '''

this is new file by fishyoung！

'''

with client.write('/myfile.txt') as writer:

    writer.write(data)

5.读取文件

with client.read('/ myfile.txt') as reader:

    data = reader.read()

    print （data）

6.文件追加内容

# 通过设置append参数，向一个已经存在的文件追加写入数据

with client.write('/myfile.txt', append=True) as writer:

    writer.write('this is append text by fishyoung! \n')

7.重命名

client.rename('/myfile.txt', '/myfile2.txt')

8.下载到指定目录

# 下载到指定目录/home

client.download('/myfile.txt', 'c:\\myfile.txt', n_threads=3)

9.创建文件夹

client.makedirs('/testdiretory')

10.上传文件

# client.upload(‘目标路径’, ‘本地源路径’)

client.upload('/testdiretory/myfile.txt','c:\\myfile.txt' )

11.设置权限

client.set_permission(filepath, 777)