Python使用SQLite数据库，建立增加和删除数据实现，调用数据生成实用的Shell脚本

SQLite 是一个C语言库，提供一种轻量级的基于磁盘的数据库。本代码单文件实现：建立增加和删除数据实现，调用数据生成实用的Shell脚本等。

使用演示视频

Python使用SQLite数据库 源码: sskcp.py

import sqlite3, sys, os.path
# define Color 
Green = '\033[32m'; Red = '\033[31m'; GreenBG = '\033[42;37m'; RedBG = '\033[41;37m'
Yellow = '\033[0;33m'; SkyBlue = '\033[0;36m'; Font = '\033[0m'

db_flag = os.path.exists('vps2021.db')
conn = sqlite3.connect('vps2021.db')
c = conn.cursor()

if db_flag == False :
  c.execute('''CREATE TABLE vps
             (ip text, port text, password text, ss_port text, info text)''')
  c.execute('''INSERT INTO vps VALUES 
            ('188.188.188.188', '22', 'passwd@SSL', '443', '0号示例')''')
  conn.commit()

# sql 获取 vps 数据 , 显示 vps 数据
def display_data(c):
  print(GreenBG, ":: 显示 SQLite3 数据库 vps2021.db 中获节点表  ")
  sql = 'SELECT * FROM vps ORDER BY ip'
  c.execute(sql)
  vps = c.fetchall()

  cnt=0  ; sk = list()
  for row in vps:
    print(SkyBlue, cnt,'节点:', Yellow, row)
    sk.append(list(row))
    cnt+=1
  print(Font)
  return sk

vps = display_data(c)
print(SkyBlue, ":: 使用节点直接输入节点号数字 ")
print(GreenBG, ":: 输入命令:", RedBG, "del <1> 删除节点 \n :: 添加节点:", SkyBlue, 'add <ip port passwd ss_port info>', Font)
print(' $ ', end='')
cmd = input().strip()
cmd = cmd.replace(',', '').replace('\'', '')
arg = cmd.split()
# print(arg)

if (len(arg)==0):
  sys.exit(1)

# 命令 del <1> 删除节点
if arg[0] == 'del' :
  id = int(arg[1])
  row = vps[id]
  c.execute("DELETE FROM vps WHERE ip=? AND port=? ", (row[0], row[1]) )
  conn.commit()
  print('\n'); display_data(c)
  sys.exit(0)

# 命令 add <ip port passwd ss_port info> 添加节点
if arg[0] == 'add' and len(arg)==6:
  row =(arg[1], arg[2], arg[3], arg[4], arg[5])
  c.execute('INSERT INTO vps VALUES (?,?,?,?,?)', row)
  conn.commit()
  print('\n'); display_data(c)
  sys.exit(0)

text = '''
# text 字符串填充你实际用到的shell脚本内容
''' 
def make_sskcp(sk, id):
  cfg = sk[id]
  str = '#!/bin/bash\n\n'
  str += 'SERVER_IP=' + cfg[0] + '\nPORT=' + cfg[1] + '\nPASSWORD=' + cfg[2] + '\nSS_PORT=40000\nSOCKS5_PORT=1080\n'
  print(str)
  str += text
  return str

if int(arg[0]) < len(vps) and len(arg)==1:
  str = make_sskcp(vps, int(arg[0]))
  f = open('sskcp.sh', 'w')
  f.write(str); f.close()
  os.system('cat sskcp.sh')
  sys.exit(0)

conn.close()