{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 2021-05-21"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Modules and Packages"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "import sys"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'3.9.4 (default, Apr  6 2021, 00:00:00) \\n[GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]'"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "sys.version"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\n"
     ]
    }
   ],
   "source": [
    "try:\n",
    "    sys.exit()\n",
    "except SystemExit as e:\n",
    "    print(e)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "module"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "type(sys)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [],
   "source": [
    "orig_sys = sys\n",
    "sys = 666"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "'int' object has no attribute 'exit'\n"
     ]
    }
   ],
   "source": [
    "try:\n",
    "    sys.exit()\n",
    "except Exception as e:\n",
    "    print(e)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'3.9.4 (default, Apr  6 2021, 00:00:00) \\n[GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]'"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "sys = orig_sys\n",
    "sys.version"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'3.9.4 (default, Apr  6 2021, 00:00:00) \\n[GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]'"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from sys import version\n",
    "version"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'3.9.4 (default, Apr  6 2021, 00:00:00) \\n[GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]'"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import sys\n",
    "blah = sys\n",
    "del sys\n",
    "blah.version"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'3.9.4 (default, Apr  6 2021, 00:00:00) \\n[GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]'"
      ]
     },
     "execution_count": 19,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import sys as blah\n",
    "blah.version"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [],
   "source": [
    "# from sys import *"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['__breakpointhook__',\n",
       " '__displayhook__',\n",
       " '__doc__',\n",
       " '__excepthook__',\n",
       " '__interactivehook__',\n",
       " '__loader__',\n",
       " '__name__',\n",
       " '__package__',\n",
       " '__spec__',\n",
       " '__stderr__',\n",
       " '__stdin__',\n",
       " '__stdout__',\n",
       " '__unraisablehook__',\n",
       " '_base_executable',\n",
       " '_clear_type_cache',\n",
       " '_current_frames',\n",
       " '_debugmallocstats',\n",
       " '_framework',\n",
       " '_getframe',\n",
       " '_git',\n",
       " '_home',\n",
       " '_xoptions',\n",
       " 'abiflags',\n",
       " 'addaudithook',\n",
       " 'api_version',\n",
       " 'argv',\n",
       " 'audit',\n",
       " 'base_exec_prefix',\n",
       " 'base_prefix',\n",
       " 'breakpointhook',\n",
       " 'builtin_module_names',\n",
       " 'byteorder',\n",
       " 'call_tracing',\n",
       " 'copyright',\n",
       " 'displayhook',\n",
       " 'dont_write_bytecode',\n",
       " 'exc_info',\n",
       " 'excepthook',\n",
       " 'exec_prefix',\n",
       " 'executable',\n",
       " 'exit',\n",
       " 'flags',\n",
       " 'float_info',\n",
       " 'float_repr_style',\n",
       " 'get_asyncgen_hooks',\n",
       " 'get_coroutine_origin_tracking_depth',\n",
       " 'getallocatedblocks',\n",
       " 'getdefaultencoding',\n",
       " 'getdlopenflags',\n",
       " 'getfilesystemencodeerrors',\n",
       " 'getfilesystemencoding',\n",
       " 'getprofile',\n",
       " 'getrecursionlimit',\n",
       " 'getrefcount',\n",
       " 'getsizeof',\n",
       " 'getswitchinterval',\n",
       " 'gettrace',\n",
       " 'hash_info',\n",
       " 'hexversion',\n",
       " 'implementation',\n",
       " 'int_info',\n",
       " 'intern',\n",
       " 'is_finalizing',\n",
       " 'last_traceback',\n",
       " 'last_type',\n",
       " 'last_value',\n",
       " 'maxsize',\n",
       " 'maxunicode',\n",
       " 'meta_path',\n",
       " 'modules',\n",
       " 'path',\n",
       " 'path_hooks',\n",
       " 'path_importer_cache',\n",
       " 'platform',\n",
       " 'platlibdir',\n",
       " 'prefix',\n",
       " 'ps1',\n",
       " 'ps2',\n",
       " 'ps3',\n",
       " 'pycache_prefix',\n",
       " 'set_asyncgen_hooks',\n",
       " 'set_coroutine_origin_tracking_depth',\n",
       " 'setdlopenflags',\n",
       " 'setprofile',\n",
       " 'setrecursionlimit',\n",
       " 'setswitchinterval',\n",
       " 'settrace',\n",
       " 'stderr',\n",
       " 'stdin',\n",
       " 'stdout',\n",
       " 'thread_info',\n",
       " 'unraisablehook',\n",
       " 'version',\n",
       " 'version_info',\n",
       " 'warnoptions']"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import sys\n",
    "dir(sys)"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.4"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}