lessons/Lesson 03 - Conditional Instructions & Operators.ipynb

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   "source": [
    "# Lesson 3 - Conditional Instructions & Operators"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Operators"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Arithmetic Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "(3 + 2*4)/2.0"
   ]
  },
  {
   "cell_type": "code",
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   "source": [
    "10**3"
   ]
  },
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   "cell_type": "code",
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   "outputs": [],
   "source": [
    "10%3"
   ]
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   "source": [
    "10//3"
   ]
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   "source": [
    "a = 10\n",
    "b = 3\n",
    "m = a%b\n",
    "f = a//b\n",
    "a == m+f*b"
   ]
  },
  {
   "cell_type": "markdown",
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   "source": [
    "Use of * operator with types other than int and float"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "[1,2]*3"
   ]
  },
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   "source": [
    "## Comparition Operators"
   ]
  },
  {
   "cell_type": "code",
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   "outputs": [],
   "source": [
    "x = 2\n",
    "print(x == 2)\n",
    "print(x != 2)\n",
    "print(x == 3)\n",
    "print(x <= 2)\n",
    "print(x >= 2) \n",
    "print(x < 2)\n",
    "print(x > 2)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Logical Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "True and True"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "True and False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "True or False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "False or False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "1 and 0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "1 or 0 "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "not False"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "(not False) == (False)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task\n",
    "Write statement that will return true if number is even and  higer than 10."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task: \n",
    "write statement that represent XOR.\n",
    "\n",
    "XOR is logical operator that returns true only when two variables has diffenet value\n",
    "\n",
    "```python\n",
    "a = 1\n",
    "b = 0\n",
    "# Your code\n",
    "```\n",
    "expected output:\n",
    "```\n",
    "True\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
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   "cell_type": "code",
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   "outputs": [],
   "source": [
    "a = True\n",
    "b = False\n",
    "a ^ b"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Assignment Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a = 10\n",
    "a += 1\n",
    "a"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a *= 4\n",
    "a"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a /= 2\n",
    "a"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a %= 10\n",
    "a"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Identity Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "x = [1,2,3]\n",
    "y = [1,2,3]\n",
    "print(x == y) \n",
    "print(x is y)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "tab = [1, 2, 3]\n",
    "tab2 = ['a', 'b', tab]\n",
    "\n",
    "print(tab == tab2[2])\n",
    "print(tab is tab2[2])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(tab2)\n",
    "tab.append(4) \n",
    "print(tab2) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "tab = [1, 2, 3]\n",
    "tab3 = ['a', 'b', tab.copy()]\n",
    "\n",
    "print(tab is tab3[2])\n",
    "print(tab is not tab3[2])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(tab3)\n",
    "tab.append(4) \n",
    "print(tab3) "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task: \n",
    "check if copy of list `is` this list, use `copy()` function "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Membership Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "2 in [1,2,3]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "4 not in [\"a\",\"b\"] "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task: \n",
    "check if list is in itself, use `copy()` function "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Bitwise Operators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "bin(6)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "int('0b101', 2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a=int('010', 2)\n",
    "b=int('101', 2)\n",
    "bin(a & b)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "a=int('010', 2)\n",
    "b=int('101', 2)\n",
    "bin(a | b)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(1 or 1)\n",
    "print(1 or 0)\n",
    "print(0 or 1)\n",
    "print(0 or 0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "bin(a ^ b)\n",
    "print(1 ^ 1)\n",
    "print(1 ^ 0)\n",
    "print(0 ^ 1)\n",
    "print(0 ^ 0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "bin(0b1010 & 0b1000)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Conditional instructions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "x = 2\n",
    "if x < 2:\n",
    "    print(\"x is less the two.\")\n",
    "elif x > 3:\n",
    "    print(\"x is greter than three.\")\n",
    "else:\n",
    "    print(\"x is equal two\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "name = \"John\"\n",
    "age = 23\n",
    "if name == \"John\" and age == 23:\n",
    "    print(\"Your name is John and you have 23 years.\")\n",
    "\n",
    "if name == \"Robert\" or age == 23:\n",
    "    print(\"Your name is Robert or you have 23 years.\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "imie = \"Robert\"\n",
    "if imie in (\"John\", \"Robert\"):\n",
    "    print (\"Your name is John or Robert\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task: \n",
    "Write if statement, that checks if three lengths can form a triangle.\n",
    "\n",
    "```python\n",
    "a = 7, b=8, c=16\n",
    "```\n",
    "expected output:\n",
    "```\n",
    "False\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Task: \n",
    "Write if else statement that check if three points are on the same line \n",
    "\n",
    "```python\n",
    "a = (1,1)\n",
    "b = (2,2)\n",
    "c = (3,2)\n",
    "```\n",
    "expected output:\n",
    "```\n",
    "False\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "..."
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