Python环境——conda环境切换 & 在特定环境下安装依赖

比眉伴天荒 2024-02-05 15:07 144阅读 0赞

![在这里插入图片描述][da6a7d2a5462444a9825b8980673f746.png]

## 如下图所示 ##

![在这里插入图片描述][62e1b5db78f24477a9581b7ed97a9000.png]

## 使用的命令 ##

### 列出所有环境 ###

conda env list

### 激活特定环境 ###

conda activate pytorch

### 在该环境下安装 ###

pip install tabulate

![在这里插入图片描述][192f94f181e047e7a2c6c34c8dd2031a.png]

## 前言 ##

本篇博客是python开发的使用案例博客，结合一些具体的案例进行阐述，本篇博客主要内容是使用Python发送Get请求，模拟http请求，后面可以搞个爬虫出来，另外就是如何使用Python进行SSH连接服务器。

其他相关的博客文章如下：

*  [Python开发——工具篇 & Pycharm的相关配置，Python相关操作 & 持续更新][Python_ _ Pycharm_Python_ _]

#### 目录 ####

*  如下图所示
 *  使用的命令
 *   *  列出所有环境
     *  激活特定环境
     *  在该环境下安装
 *  前言
 *  引出
 *  python发送get请求
 *   *  案例1：get请求，间隔1分钟查询，if语法打印
     *  案例2：间隔一定时间，轮流进行get请求，总共2个
 *  python进行SSH链接
 *   *  建立SSH连接核心程序
     *  日志打印附件
 *  总结

## 引出 ##

--------------------

1.使用Python发送Get请求，模拟http请求；  
2.如何使用Python进行SSH连接服务器；

## python发送get请求 ##

### 案例1：get请求，间隔1分钟查询，if语法打印 ###

import requests
    import time
    from datetime import datetime
    
    url=f'http://x.x.x.x:8082/sn'     #格式化输出拼接
    snTarget = "S231012J0029"
    
    while(True):
        response = requests.get(url=url) 
        snList = response.json()
        current_time = datetime.now()
        if snTarget in snList:
            print("%s 查询到目标sn" %current_time)
        else:
            print("%s 未查到设备sn" %current_time)
        time.sleep(60)

![在这里插入图片描述][e3af32c9da154597b82d8d2417134c9c.png]

### 案例2：间隔一定时间，轮流进行get请求，总共2个 ###

# encoding:utf-8
    import requests
    import time
    from datetime import datetime
    
    req3 = "http://xxxx"
    req4 = "http://xxxx"
    reqs = [req3, req4]
    vers = ["2.0.3", "2.0.4"]
    url = f'http://x.x.x.x:8082/sn'  # 格式化输出拼接
    snTarget = "S231012J0029"
    
    while (True):
        response = requests.get(url=url)
        snList = response.json()
        current_time = datetime.now()
        if snTarget in snList:
            print("%s 查询到目标sn" % current_time)
            for ver, req in zip(vers, reqs):
                print("{} 进行版本升级 {}".format(datetime.now(), ver))
                # print("send request :", req)
                resp = requests.get(url=req).json()
                print(resp)
                time.sleep(430)
        else:
            print("%s 未查到设备sn" % current_time)
        time.sleep(60)

## python进行SSH链接 ##

![在这里插入图片描述][780ce13f1b73440e9a06bb49743c78a0.png]

### 建立SSH连接核心程序 ###

import paramiko
    from paramiko.client import SSHClient
    import time
    import logging
    import utils.LogUtils
    
    
    # 设置日志日期格式
    logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s', level=logging.DEBUG)
    
    
    # main主方法
    def ssh_hi(client: SSHClient):
        # 执行命令
        stdin, stdout, stderr = \
            client.exec_command("grep -E 'RegSWVersion|onResponse' /root/logs/sys-debug.log |grep -v 1.1 | tail -n 1")
        # 打印命令输出
        resp = stdout.read().decode()
        logging.info(resp)
        if "2.0.4" in resp:
            logging.warning("当前版本为2.0.4, 版本改为2.0.3")
        elif "2.0.3" in resp:
            logging.warning("当前版本为2.0.3, 版本改为2.0.4")
        else:
            logging.warning("需要上位机刷新版本")
    
    
    # 关闭连接
    def closeSSH(client: SSHClient):
        client.close()
    
    
    # 建立连接
    def buildSSH():
        # 创建SSH客户端
        client = paramiko.SSHClient()
        # 自动添加主机名和密钥到本地的known_hosts文件
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        # 连接SSH服务器
        client.connect('ip', port=22, username='username', password='password')
        return client
    
    
    if __name__ == '__main__':
        ssh = buildSSH()
        while(True):
            ssh_hi(ssh)
            time.sleep(120)
    
            # closeSSH(ssh)

### 日志打印附件 ###

#!/usr/bin/env python
    # encoding: utf-8
    import logging
    
    
    # now we patch Python code to add color support to logging.StreamHandler
    def add_coloring_to_emit_windows(fn):
      # add methods we need to the class
      def _out_handle(self):
        import ctypes
        return ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
    
      out_handle = property(_out_handle)
    
      def _set_color(self, code):
        import ctypes
        # Constants from the Windows API
        self.STD_OUTPUT_HANDLE = -11
        hdl = ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
        ctypes.windll.kernel32.SetConsoleTextAttribute(hdl, code)
    
      setattr(logging.StreamHandler, '_set_color', _set_color)
    
      def new(*args):
        FOREGROUND_BLUE = 0x0001 # text color contains blue.
        FOREGROUND_GREEN = 0x0002 # text color contains green.
        FOREGROUND_RED = 0x0004 # text color contains red.
        FOREGROUND_INTENSITY = 0x0008 # text color is intensified.
        FOREGROUND_WHITE = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
        # winbase.h
        STD_INPUT_HANDLE = -10
        STD_OUTPUT_HANDLE = -11
        STD_ERROR_HANDLE = -12
    
        # wincon.h
        FOREGROUND_BLACK = 0x0000
        FOREGROUND_BLUE = 0x0001
        FOREGROUND_GREEN = 0x0002
        FOREGROUND_CYAN = 0x0003
        FOREGROUND_RED = 0x0004
        FOREGROUND_MAGENTA = 0x0005
        FOREGROUND_YELLOW = 0x0006
        FOREGROUND_GREY = 0x0007
        FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified.
    
        BACKGROUND_BLACK = 0x0000
        BACKGROUND_BLUE = 0x0010
        BACKGROUND_GREEN = 0x0020
        BACKGROUND_CYAN = 0x0030
        BACKGROUND_RED = 0x0040
        BACKGROUND_MAGENTA = 0x0050
        BACKGROUND_YELLOW = 0x0060
        BACKGROUND_GREY = 0x0070
        BACKGROUND_INTENSITY = 0x0080 # background color is intensified.
    
        levelno = args[1].levelno
        if (levelno >= 50):
          color = BACKGROUND_YELLOW | FOREGROUND_RED | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY
        elif (levelno >= 40):
          color = FOREGROUND_RED | FOREGROUND_INTENSITY
        elif (levelno >= 30):
          color = FOREGROUND_YELLOW | FOREGROUND_INTENSITY
        elif (levelno >= 20):
          color = FOREGROUND_GREEN
        elif (levelno >= 10):
          color = FOREGROUND_MAGENTA
        else:
          color = FOREGROUND_WHITE
        args[0]._set_color(color)
    
        ret = fn(*args)
        args[0]._set_color(FOREGROUND_WHITE)
        # print "after"
        return ret
    
      return new
    
    
    def add_coloring_to_emit_ansi(fn):
      # add methods we need to the class
      def new(*args):
        levelno = args[1].levelno
        if (levelno >= 50):
          color = '\x1b[31m' # red
        elif (levelno >= 40):
          color = '\x1b[31m' # red
        elif (levelno >= 30):
          color = '\x1b[33m' # yellow
        elif (levelno >= 20):
          color = '\x1b[32m' # green
        elif (levelno >= 10):
          color = '\x1b[35m' # pink
        else:
          color = '\x1b[0m' # normal
        try:
          args[1].msg = color + args[1].msg + '\x1b[0m' # normal
        except Exception as e:
          pass
        # print "after"
        return fn(*args)
    
      return new
    
    
    import platform
    
    if platform.system() == 'Windows':
      # Windows does not support ANSI escapes and we are using API calls to set the console color
      logging.StreamHandler.emit = add_coloring_to_emit_windows(logging.StreamHandler.emit)
    else:
      # all non-Windows platforms are supporting ANSI escapes so we use them
      logging.StreamHandler.emit = add_coloring_to_emit_ansi(logging.StreamHandler.emit)
      # log = logging.getLogger()
      # log.addFilter(log_filter())
      # //hdlr = logging.StreamHandler()
      # //hdlr.setFormatter(formatter())

--------------------

## 总结 ##

1.使用Python发送Get请求，模拟http请求；  
2.如何使用Python进行SSH连接服务器；

[da6a7d2a5462444a9825b8980673f746.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/05/904f4682cee74cd88e84d7cff6044800.png
[62e1b5db78f24477a9581b7ed97a9000.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/05/85f00597caaa490993f0968133818a86.png
[192f94f181e047e7a2c6c34c8dd2031a.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/05/5a63c93601f14c56a025eb5e16425421.png
[Python_ _ Pycharm_Python_ _]: https://blog.csdn.net/Pireley/article/details/134681447
[e3af32c9da154597b82d8d2417134c9c.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/05/039391c07a8f49e691133280d4670bd4.png
[780ce13f1b73440e9a06bb49743c78a0.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/05/af3e0f0ff6394271aa18283fb5bc45e3.png