5 BASIC PYTHON.ipynb

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    "BAASIC PYTHON PROGRAMMING\n",
    "\n"
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    "ASSIGNMENT 5"
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    "1.What does an empty dictionary's code look like?\n",
    "Ans: An empty dictionary is often represented by two empty curly brackets\n",
    "d = {} or d = dict()\n",
    "\n",
    "2.what is the value of dictionary value with key 'foo' and the value 42 ?\n",
    "Ans: {'foo':42}\n",
    "\n",
    "3.What is the most significant distinction between a dictionary and a list?\n",
    "Ans: Dictionaries are represented by {} where as listed are represented by []\n",
    "The Items stored in a dictionary are Unordered , while the items in a list are ordered\n",
    "\n",
    "4.What happens if you try to access spam ['foo'] if spam is {'bar':100} ?\n",
    "Ans: we will get a keyError KeyError: 'foo'\n",
    "\n",
    "5.if a dictionary is stored in spam,what is the difference between the expressions 'cat' in spam and 'cat' in spam.keys() ?\n",
    "Ans: There is no difference . The operator checks whether a value exits as a key in the dictionary or not\n",
    "\n",
    "6.if a dictionary is stored in spam,what is the difference between the expressions 'cat' in spam and 'cat' in spam.values() ?\n",
    "Ans:'cat' in spam checks whether there is a 'cat' key in the dictionary, while 'cat' in spam.values() checks whether there is a value 'cat' for one of the keys in spam.\n",
    "\n",
    "7.what is a shortcut for the following code ?\n",
    "if 'color' not in spam: spam['color'] ='black'\n",
    "\n",
    "Ans: spam.setdefault('color','black')"
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    "8.How do you 'pretty print' dictionary values using which modules and function ?\n",
    "Ans: we can pretty print a dictionary using three functions\n",
    "\n",
    "1.by using pprint() function of pprint module\n",
    "Note: pprint() function doesnot prettify nested dictionaries\n",
    "2.by using dumps() method of json module\n",
    "3.by using dumps() method of yaml module"
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      "Printing using print() function\n",
      " [{'Name': 'John', 'Age': '23', 'Residence': {'Country': 'USA', 'City': 'New York'}}, {'Name': 'Jose', 'Age': '44', 'Residence': {'Country': 'Spain', 'City': 'Madrid'}}, {'Name': 'Anne', 'Age': '29', 'Residence': {'Country': 'UK', 'City': 'England'}}, {'Name': 'Lee', 'Age': '35', 'Residence': {'Country': 'Japan', 'City': 'Osaka'}}]\n",
      "----------------------------------------------------------------------\n",
      "Printing using pprint() funciton\n",
      "[{'Age': '23',\n",
      "  'Name': 'John',\n",
      "  'Residence': {'City': 'New York', 'Country': 'USA'}},\n",
      " {'Age': '44',\n",
      "  'Name': 'Jose',\n",
      "  'Residence': {'City': 'Madrid', 'Country': 'Spain'}},\n",
      " {'Age': '29',\n",
      "  'Name': 'Anne',\n",
      "  'Residence': {'City': 'England', 'Country': 'UK'}},\n",
      " {'Age': '35',\n",
      "  'Name': 'Lee',\n",
      "  'Residence': {'City': 'Osaka', 'Country': 'Japan'}}]\n",
      "----------------------------------------------------------------------\n",
      "Printing using dumps() method\n",
      " [\n",
      "    {\n",
      "        \"Name\": \"John\",\n",
      "        \"Age\": \"23\",\n",
      "        \"Residence\": {\n",
      "            \"Country\": \"USA\",\n",
      "            \"City\": \"New York\"\n",
      "        }\n",
      "    },\n",
      "    {\n",
      "        \"Name\": \"Jose\",\n",
      "        \"Age\": \"44\",\n",
      "        \"Residence\": {\n",
      "            \"Country\": \"Spain\",\n",
      "            \"City\": \"Madrid\"\n",
      "        }\n",
      "    },\n",
      "    {\n",
      "        \"Name\": \"Anne\",\n",
      "        \"Age\": \"29\",\n",
      "        \"Residence\": {\n",
      "            \"Country\": \"UK\",\n",
      "            \"City\": \"England\"\n",
      "        }\n",
      "    },\n",
      "    {\n",
      "        \"Name\": \"Lee\",\n",
      "        \"Age\": \"35\",\n",
      "        \"Residence\": {\n",
      "            \"Country\": \"Japan\",\n",
      "            \"City\": \"Osaka\"\n",
      "        }\n",
      "    }\n",
      "]\n",
      "----------------------------------------------------------------------\n",
      "Printing using dump() method\n",
      " - Age: '23'\n",
      "  Name: John\n",
      "  Residence:\n",
      "    City: New York\n",
      "    Country: USA\n",
      "- Age: '44'\n",
      "  Name: Jose\n",
      "  Residence:\n",
      "    City: Madrid\n",
      "    Country: Spain\n",
      "- Age: '29'\n",
      "  Name: Anne\n",
      "  Residence:\n",
      "    City: England\n",
      "    Country: UK\n",
      "- Age: '35'\n",
      "  Name: Lee\n",
      "  Residence:\n",
      "    City: Osaka\n",
      "    Country: Japan\n",
      "\n"
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    "ndict = [\n",
    "  {'Name': 'John', 'Age': '23', 'Residence': {'Country':'USA', 'City': 'New York'}},\n",
    "  {'Name': 'Jose', 'Age': '44', 'Residence': {'Country':'Spain', 'City': 'Madrid'}},\n",
    "  {'Name': 'Anne', 'Age': '29', 'Residence': {'Country':'UK', 'City': 'England'}},\n",
    "  {'Name': 'Lee', 'Age': '35', 'Residence': {'Country':'Japan', 'City': 'Osaka'}}\n",
    "]\n",
    "\n",
    "print('Printing using print() function\\n',ndict)\n",
    "print('-'*70)\n",
    "import pprint\n",
    "print('Printing using pprint() funciton')\n",
    "pprint.pprint(ndict)\n",
    "print('-'*70)\n",
    "import json\n",
    "dump = json.dumps(ndict, indent=4)\n",
    "print('Printing using dumps() method\\n', dump)\n",
    "print('-'*70)\n",
    "import yaml\n",
    "dump = yaml.dump(ndict)\n",
    "print('Printing using dump() method\\n', dump)"
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