Untitled-checkpoint.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "numpy.ndarray"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "arr=[1,2,3,4,5]\n",
    "\n",
    "n=np.array(arr,dtype=complex)\n",
    "\n",
    "type(n)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "matrix([[1, 2],\n",
       "        [3, 4],\n",
       "        [5, 6]])"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "np.matrix('1,2;3,4;5,6')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "matrix([[1, 2, 3, 4, 5]])"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "np.matrix(arr)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([1.+0.j, 2.+0.j, 3.+0.j, 4.+0.j, 5.+0.j])"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "ename": "ValueError",
     "evalue": "only 2 non-keyword arguments accepted",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mValueError\u001b[0m                                Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-18-152b0e9c13cd>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m      1\u001b[0m my=np.array([\"Apple\",12321,43534.34234],[\"Banana\",213,3432.23],[\"Orange\",213245543,23.15435] , dtype=\n\u001b[0;32m----> 2\u001b[0;31m            [(\"name\",\">U12\"),(\"Storage\",\"int32\"),(\"weight\",\"<f4\")])\n\u001b[0m",
      "\u001b[0;31mValueError\u001b[0m: only 2 non-keyword arguments accepted"
     ]
    }
   ],
   "source": [
    "my=np.array([(\"Apple\",12321,43534.34234),(\"Banana\",213,3432.23),(\"Orange\",213245543,23.15435) , dtype=\n",
    "           [(\"name\",\">U12\"),(\"Storage\",\"int32\"),(\"weight\",\"<f4\")])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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