datetimeの扱い.ipynb

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     "text": [
      "2018-09-13 04:52:40.000098+00:00 <class 'datetime.datetime'>\n"
     ]
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   "source": [
    "import time, pytz\n",
    "from datetime import datetime, timedelta\n",
    "\n",
    "# UTC現在時刻(datetime)\n",
    "dt_utc_now  = datetime.now(pytz.utc)\n",
    "print(dt_utc_now, type(dt_utc_now))"
   ]
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     "text": [
      "1536814360 <class 'int'>\n"
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   "source": [
    "# UNIX TIME(datetime -> int)\n",
    "unixtime = int(dt_utc_now.timestamp())\n",
    "print(unixtime, type(unixtime))"
   ]
  },
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     "text": [
      "2018-09-13T04:52:40.000098Z <class 'str'>\n"
     ]
    }
   ],
   "source": [
    "# UTC現在時刻(datetime -> string)\n",
    "dt_str = dt_utc_now.strftime(\"%Y-%m-%dT%H:%M:%S.%fZ\")\n",
    "print(dt_str, type(dt_str))"
   ]
  },
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   "cell_type": "code",
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     "text": [
      "2018-09-13 04:52:40.000098+00:00 <class 'datetime.datetime'>\n"
     ]
    }
   ],
   "source": [
    "# UTC現在時刻(string -> datetime(time zone指定))\n",
    "dt_utc = datetime.strptime(dt_str, \"%Y-%m-%dT%H:%M:%S.%fZ\").replace(tzinfo=pytz.utc)\n",
    "print(dt_utc, type(dt_utc))"
   ]
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      "2018-09-13 13:52:40.000098+09:00 <class 'datetime.datetime'>\n"
     ]
    }
   ],
   "source": [
    "# time zone変更(datetime(UTC -> JST))\n",
    "dt_jst = dt_utc_now.astimezone(pytz.timezone(\"Asia/Tokyo\"))\n",
    "print(dt_jst, type(dt_jst))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1536814370.2933867 <class 'float'>\n"
     ]
    }
   ],
   "source": [
    "# UNIX TIME(time)\n",
    "unix_time = time.time()\n",
    "print(unix_time, type(unix_time))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
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     "text": [
      "2018-09-13 05:52:40.000098+00:00 <class 'datetime.datetime'>\n"
     ]
    }
   ],
   "source": [
    "# 1時間後(datetime)\n",
    "dt_after_1h = dt_utc_now + timedelta(hours=1)\n",
    "print(dt_after_1h, type(dt_after_1h))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1536817960 <class 'int'>\n"
     ]
    }
   ],
   "source": [
    "# 1時間後(UNIX TIME)\n",
    "int_after_1h = unix_time + (60 * 60)\n",
    "print(int_after_1h, type(int_after_1h))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
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