import re
import os
import paramiko
import redis
import time

tday_time=time.strftime("%Y-%m-%d", time.localtime()) # 获取当天的日期时间
file_path = '/Users/macbook/Desktop/log.txt' # 存放Log日志的路径

class ssh_Liunx():

'''连接服务器'''
def __init__(self,hostname,username,password): # 构造初始化数据
    self.hostname = hostname
    self.username = username
    self.password = password
    self.ssh =paramiko.SSHClient()
    self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())  # 用ssh连接远程主机时，第一次连接时会提示是否继续进行远程连接，选择yes
    self.ssh.connect(self.hostname,22,self.username,self.password) #连接远程主机，SSH端口号为22

def ssh_comond(self,commonds): # 执行命令的方法
    '''执行命令'''
    stdin, stdout, stderr = self.ssh.exec_command(commonds)  # 执行命令
    result=stdout.readlines()
    for line in result:
        print(line)
    return result


def get_hostname(self): # 获取服务器主机名
    commonds='hostname'
    get_hostname=self.ssh_comond(commonds)
    return  get_hostname


def get_disk_space(self):  # 获取剩余磁盘空间
    commonds='df -h'
    get_diskspace=self.ssh_comond(commonds)
    return get_diskspace

def Transcode(self):# 获取日志文件信息 输入到当前目录下
    count=0  # 计数
    commonds='cd /xxxx/logs;cat laravel-'+tday_time+'.log'  # linux执行命令
    get_transcode=self.ssh_comond(commonds) # 调用方法具体执行
    for line in get_transcode: # 读取当前获取的日志信息
        with open(file_path,'a+') as fp: # 本地生产log文件
            fp.write(line) # 将日志另到文件中
        count+=1
    #print("当前文件总计:%s行日志信息"%count)
    # print(os.path.getsize(file_path))  # 文件大小 字节
    return get_transcode

def re_error(self):  # 正则匹配日志的错误信息，存在问题，没有匹配出来，待继续处理
    matches=[]
    identifier_pattern = re.compile(r'Identifier: (.*?)$')
    with open(file_path, 'a+') as fp:
        for line in fp:
            matches+=re.findall(identifier_pattern,line)
    print("matches", matches)

def closed(self): # 关闭连接
    self.ssh.close()

if name == 'main':

hostname = '127.0.0.1'
username = 'username'
password = 'password
ssh = ssh_test(hostname, username, password)
print(ssh.Transcode()) 

不完善之处还请多多指教