系统
Python 基础: 系统
exit() 中断程式
print('1. run process')
print('2. run process')
print('3. run process')
print('4. run process')
print('5. run process')
exit()
print('6. run process')
# 1. run process
# 2. run process
# 3. run process
# 4. run process
# 5. run process