03. Statements/3.3 While Loops.ipynb

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   "source": [
    "# While Loops"
   ]
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      "The current value of x is 0\n",
      "The current value of x is 1\n",
      "The current value of x is 2\n",
      "The current value of x is 3\n",
      "The current value of x is 4\n"
     ]
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   "source": [
    "x = 0\n",
    "\n",
    "while x < 5:\n",
    "    print(f'The current value of x is {x}')\n",
    "    x += 1"
   ]
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     "text": [
      "The current value of x is 0\n",
      "The current value of x is 1\n",
      "The current value of x is 2\n",
      "The current value of x is 3\n",
      "The current value of x is 4\n",
      "x is not less than 5\n"
     ]
    }
   ],
   "source": [
    "x = 0\n",
    "\n",
    "while x < 5:\n",
    "    print(f'The current value of x is {x}')\n",
    "    x += 1\n",
    "else:\n",
    "    print('x is not less than 5')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
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     "text": [
      "x is not less than 5\n"
     ]
    }
   ],
   "source": [
    "x = 50\n",
    "\n",
    "while x < 5:\n",
    "    print(f'The current value of x is {x}')\n",
    "    x += 1\n",
    "else:\n",
    "    print('x is not less than 5')"
   ]
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   "source": [
    "## Keywords\n",
    "- `pass` Does nothing at all\n",
    "- `continue` Goes to the top of the closest enclosing loop\n",
    "- `break` Breaks out of the current closest enclosing loop"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Pass"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "end of my script\n"
     ]
    }
   ],
   "source": [
    "x = [1, 2, 3]\n",
    "\n",
    "for item in x:\n",
    "    # Comment\n",
    "    pass\n",
    "\n",
    "print('end of my script')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can use `pass` as a placeholder to avoid syntax errors when no providing any statements inside a loop"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Continue"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [],
   "source": [
    "mystring = 'Sammy'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "S\n",
      "a\n",
      "m\n",
      "m\n",
      "y\n"
     ]
    }
   ],
   "source": [
    "for letter in mystring:\n",
    "    print(letter)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "S\n",
      "m\n",
      "m\n",
      "y\n"
     ]
    }
   ],
   "source": [
    "for letter in mystring:\n",
    "    # Avoids printing the letter 'a' by using continue\n",
    "    if letter == 'a':\n",
    "        continue\n",
    "    print(letter)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Break"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "S\n"
     ]
    }
   ],
   "source": [
    "for letter in mystring:\n",
    "    if letter == 'a':\n",
    "        break\n",
    "    print(letter)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n"
     ]
    }
   ],
   "source": [
    "x = 0\n",
    "while x < 5:\n",
    "    print(x)\n",
    "    x += 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n"
     ]
    }
   ],
   "source": [
    "x = 0\n",
    "while x < 5:\n",
    "    if x == 2:\n",
    "        break\n",
    "    print(x)\n",
    "    x += 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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