Assignment_3.ipynb

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   "source": [
    "# Assignment 03"
   ]
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   "source": [
    "# Solution"
   ]
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   "source": [
    "#### 1. Why are functions advantageous to have in your programs?"
   ]
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   "source": [
    "Ans: Functions reduce the need for duplicate code. This makes programs shorter, easier to read, and easier to update. The main advantage of functions is code Reusability."
   ]
  },
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   "source": [
    "#### 2. When does the code in a function run: when it's specified or when it's called?"
   ]
  },
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   "source": [
    "Ans: The code in a function executes when the function is called, not when the function is specified."
   ]
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   "source": [
    "#### 3.What statement creates a function?"
   ]
  },
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   "source": [
    "Ans: The def statement defines a function\n",
    "Syntax of Function:\n",
    "def function_name(parameters):\n",
    "    \"\"\"doc string\"\"\"          \n",
    "    -----function body-----\n",
    "    -----function body-----\n",
    "    return value"
   ]
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   "id": "3ff78ab7",
   "metadata": {},
   "source": [
    "#### 4. What is the difference between a function and a function call?"
   ]
  },
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   "id": "0ab19967",
   "metadata": {},
   "source": [
    "Ans: A function is procedure to achieve a particular result. while function call is using this function to achive that task. Using a function to do a particular task any point in program is called as function call."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "7b100042",
   "metadata": {},
   "source": [
    "#### 5. How many global scopes are there in a Python program? How many local scopes?"
   ]
  },
  {
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   "id": "359727cd",
   "metadata": {},
   "source": [
    "Ans: There is one global scope, and a local scope is created whenever a function is called."
   ]
  },
  {
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   "id": "c5df06bf",
   "metadata": {},
   "source": [
    "#### 6. What happens to variables in a local scope when the function call returns?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "c96984a0",
   "metadata": {},
   "source": [
    "Ans: When a function returns, the local scope is destroyed, and all the variables in it are forgotten."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "153a7396",
   "metadata": {},
   "source": [
    "#### 7. What is the concept of a return value? Is it possible to have a return value in an expression?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3c086fe0",
   "metadata": {},
   "source": [
    "Ans: A return value is the value that a function call evaluates to. Like any value, a return value can be used as part of an expression."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bfd17e2a",
   "metadata": {},
   "source": [
    "#### 8. If a function does not have a return statement, what is the return value of a call to that function?"
   ]
  },
  {
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   "id": "085f453a",
   "metadata": {},
   "source": [
    "Ans: If there is no return statement for a function, its return value is None."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4d5fe8a2",
   "metadata": {},
   "source": [
    "#### 9. How do you make a function variable refer to the global variable?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b59a3e4e",
   "metadata": {},
   "source": [
    "Ans: A global statement will force a variable in a function to refer to the global variable. If you want to refer to a global variable in a function, you can use the global keyword to declare which variables are global."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "62ed0ee2",
   "metadata": {},
   "source": [
    "#### 10. What is the data type of None?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "c68f3a78",
   "metadata": {},
   "source": [
    "Ans: The data type of None is NoneType."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5eb9e8b4",
   "metadata": {},
   "source": [
    "#### 11. What does the sentence import areallyourpetsnamederic do?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "fd7395dd",
   "metadata": {},
   "source": [
    "Ans: That import statement imports a module named areallyourpetsnamederic."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "23175303",
   "metadata": {},
   "source": [
    "#### 12. If you had a bacon() feature in a spam module, what would you call it after importing spam?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f0638c95",
   "metadata": {},
   "source": [
    "Ans: This function can be called with spam.bacon()."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ba1b0bb3",
   "metadata": {},
   "source": [
    "#### 13. What can you do to save a programme from crashing if it encounters an error?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5f5e6ade",
   "metadata": {},
   "source": [
    "Ans: Place the line of code that might cause an error in a try clause and use except block to handle the error."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4c9074f4",
   "metadata": {},
   "source": [
    "#### 14. What is the purpose of the try clause? What is the purpose of the except clause?"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6d933b22",
   "metadata": {},
   "source": [
    "Ans:The code that could potentially cause an error goes in the try clause. The code that executes if an error happens goes in the except clause."
   ]
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