Python Day 5 - Reference.ipynb

{"nbformat":4,"nbformat_minor":0,"metadata":{"colab":{"provenance":[],"authorship_tag":"ABX9TyNCRMrm+Ao/dOxovJg9I5zq"},"kernelspec":{"name":"python3","display_name":"Python 3"},"language_info":{"name":"python"}},"cells":[{"cell_type":"markdown","source":["# Tuples, Lists, and Dictionaries\n","Welcome to today's session! We'll explore three key data structures in Python:\n","- **Tuples**: Immutable collections of items.\n","- **Lists**: Mutable collections of items.\n","- **Dictionaries**: Key-value pairs for structured data."],"metadata":{"id":"AQaiNsXyl1aQ"}},{"cell_type":"markdown","source":["### 5.2.1 Tuples\n","Tuples are pretty easy to make. You give your tuple a name, then after that the list of values it will carry. For example, the months of the year:\n","\n","syntax\n","```python\n","tuple = (1,2,3.4)\n","```"],"metadata":{"id":"duNdmZFUmB47"}},{"cell_type":"code","execution_count":10,"metadata":{"id":"y8gVK9DalNYR","executionInfo":{"status":"ok","timestamp":1732632460235,"user_tz":-330,"elapsed":431,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"outputs":[],"source":["months = ('January','February','March','April','May','June',\\\n","'July','August','September','October','November','  December')"]},{"cell_type":"code","source":["months[1]"],"metadata":{"colab":{"base_uri":"https://localhost:8080/","height":35},"id":"L4sXug7Imu3E","executionInfo":{"status":"ok","timestamp":1732632460697,"user_tz":-330,"elapsed":30,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"c4fa944c-1504-48c2-e62e-a1a5a3fb0458"},"execution_count":11,"outputs":[{"output_type":"execute_result","data":{"text/plain":["'February'"],"application/vnd.google.colaboratory.intrinsic+json":{"type":"string"}},"metadata":{},"execution_count":11}]},{"cell_type":"code","source":["# Example 1: Create and Access Tuple Elements\n","my_tuple = (10, 20, 30, 40)\n","\n","print(\"The full tuple:\", my_tuple)\n","print(\"Accessing the first element:\", my_tuple[0])\n","print(\"Accessing the last element:\", my_tuple[-1])"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"yabrfUb5m4aS","executionInfo":{"status":"ok","timestamp":1732632460699,"user_tz":-330,"elapsed":27,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"1e8d034d-d4e4-4c5e-e49d-70b4d935dcf2"},"execution_count":12,"outputs":[{"output_type":"stream","name":"stdout","text":["The full tuple: (10, 20, 30, 40)\n","Accessing the first element: 10\n","Accessing the last element: 40\n"]}]},{"cell_type":"markdown","source":["Loops through Tuples"],"metadata":{"id":"_veVSyD3m_pz"}},{"cell_type":"code","source":["# Example 2: Iterating through a tuple\n","colors = (\"red\", \"green\", \"blue\")\n","\n","for color in colors:\n","  print(f\"Color: {color}\")"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"rGoRmneTnB5x","executionInfo":{"status":"ok","timestamp":1732632460699,"user_tz":-330,"elapsed":19,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"a1c078f1-bbb9-454e-feb7-ca5846593e04"},"execution_count":13,"outputs":[{"output_type":"stream","name":"stdout","text":["Color: red\n","Color: green\n","Color: blue\n"]}]},{"cell_type":"code","source":["# Example 3: Using a tuple in a conditional\n","numbers = (1, 2, 3, 4, 5)\n","\n","if 3 in numbers:\n","  print(\"The number 3 is in the tuple.\")\n","else:\n","  print(\"The number 3 is not in the tuple.\")"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"kZ4gzXkynOjC","executionInfo":{"status":"ok","timestamp":1732632460699,"user_tz":-330,"elapsed":16,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"2bab9d55-0ba3-4b84-d700-eec05d97982a"},"execution_count":14,"outputs":[{"output_type":"stream","name":"stdout","text":["The number 3 is in the tuple.\n"]}]},{"cell_type":"markdown","source":["### 5.2.2 Lists\n","Lists are extremely similar to tuples. Lists are modifiable (or 'mutable', as a programmer may say), so their values can be changed. Most of the time we use lists, not tuples, because we want to easily change the values of things if we need to.\n","\n","syntax\n","\n","```python\n","list = [item1, item2 , ...]\n","```"],"metadata":{"id":"5DGSiD0omlbS"}},{"cell_type":"code","source":["box = ['pencil', 'scale', 'sharpner', 'eraser', 'pen']"],"metadata":{"id":"vDleVXXkmnWA","executionInfo":{"status":"ok","timestamp":1732632460700,"user_tz":-330,"elapsed":14,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":15,"outputs":[]},{"cell_type":"code","source":["print(box[2])"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"wZTH5y9QnX2g","executionInfo":{"status":"ok","timestamp":1732632461387,"user_tz":-330,"elapsed":701,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"2ab3d0e7-9f25-4dc7-fa04-9640c49b2ec0"},"execution_count":16,"outputs":[{"output_type":"stream","name":"stdout","text":["sharpner\n"]}]},{"cell_type":"code","source":["#Remove your 2nd item\n","del box[1]"],"metadata":{"id":"icNb4KYxoE1r","executionInfo":{"status":"ok","timestamp":1732632461388,"user_tz":-330,"elapsed":45,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":17,"outputs":[]},{"cell_type":"code","source":["#Example 1: Creating and Modifying Lists\n","fruits = [\"apple\", \"banana\", \"cherry\"]\n","print(\"Original list:\", fruits)\n","\n","#Adding an element\n","fruits.append(\"orange\")\n","print(\"After adding an element:\", fruits)\n","\n","#Removing an element\n","fruits.remove(\"banana\")\n","print(\"After removing an element:\", fruits)"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"phQUAAl1nmAS","executionInfo":{"status":"ok","timestamp":1732632461388,"user_tz":-330,"elapsed":43,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"007f4803-ca81-485f-92ca-40fce02de845"},"execution_count":18,"outputs":[{"output_type":"stream","name":"stdout","text":["Original list: ['apple', 'banana', 'cherry']\n","After adding an element: ['apple', 'banana', 'cherry', 'orange']\n","After removing an element: ['apple', 'cherry', 'orange']\n"]}]},{"cell_type":"markdown","source":["# Dictionaries\n","A dictionary is a collection of unordered key-value pairs. Each key is unique, and values can be accessed using their keys.\n","\n","## Key Features:\n","* Unordered: The order of key-value pairs is not guaranteed (Python 3.7+ maintains insertion order).\n","* Mutable: You can add, update, or remove key-value pairs.\n","* Keys are unique: You cannot have duplicate keys.\n","\n","syntax\n","```python\n","my_dict = {key1: value1, key2: value2, ...}\n","```"],"metadata":{"id":"h9opbqzQoP_9"}},{"cell_type":"code","source":["#Example 1: Creating and Accessing a Dictionary\n","student = {\"name\": \"Alice\", \"age\": 20, \"major\": \"CS\"}\n","\n","print(\"Student dictionary:\", student)\n","print(\"Name:\", student[\"name\"])\n","print(\"Age:\", student[\"age\"])"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"XEamB6edoVuF","executionInfo":{"status":"ok","timestamp":1732632461388,"user_tz":-330,"elapsed":36,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"4633073a-ec23-4c7c-d340-2367174636b2"},"execution_count":19,"outputs":[{"output_type":"stream","name":"stdout","text":["Student dictionary: {'name': 'Alice', 'age': 20, 'major': 'CS'}\n","Name: Alice\n","Age: 20\n"]}]},{"cell_type":"code","source":["student.items()"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"wfM176cdpXOh","executionInfo":{"status":"ok","timestamp":1732632461389,"user_tz":-330,"elapsed":32,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"516d6201-3900-42d3-8eea-bf2882e4cb97"},"execution_count":20,"outputs":[{"output_type":"execute_result","data":{"text/plain":["dict_items([('name', 'Alice'), ('age', 20), ('major', 'CS')])"]},"metadata":{},"execution_count":20}]},{"cell_type":"code","source":["student.keys()"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"QCqH0UHBpk1j","executionInfo":{"status":"ok","timestamp":1732632461389,"user_tz":-330,"elapsed":29,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"78c66659-4381-4e0c-e72c-5066f440339f"},"execution_count":21,"outputs":[{"output_type":"execute_result","data":{"text/plain":["dict_keys(['name', 'age', 'major'])"]},"metadata":{},"execution_count":21}]},{"cell_type":"code","source":["student.values()"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"khSelf1Mpsrd","executionInfo":{"status":"ok","timestamp":1732632461389,"user_tz":-330,"elapsed":24,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"6caef521-84e6-4e1c-b60f-5d26197a4535"},"execution_count":22,"outputs":[{"output_type":"execute_result","data":{"text/plain":["dict_values(['Alice', 20, 'CS'])"]},"metadata":{},"execution_count":22}]},{"cell_type":"code","source":["#Example 2: Iterating through a Dictionary\n","grades = {\"Alice\": 85, \"Bob\": 92, \"Charlie\": 78}\n","\n","for name, grade in grades.items():\n","  print(f\"{name}'s grade: {grade}\")"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"U60P9VMspRro","executionInfo":{"status":"ok","timestamp":1732632461389,"user_tz":-330,"elapsed":20,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"07b2ba7a-39f5-437c-fdda-7dfeffc726b1"},"execution_count":23,"outputs":[{"output_type":"stream","name":"stdout","text":["Alice's grade: 85\n","Bob's grade: 92\n","Charlie's grade: 78\n"]}]},{"cell_type":"code","source":["#Example 3: Using Dictionaries with Conditional Statements\n","products = {\"apple\": 3, \"banana\": 2, \"cherry\": 5}\n","\n","for product, price in products.items():\n","  if price > 3:\n","    print(f\"{product} is expensive\")\n","  else:\n","    print(f\"{product} is affordable\")"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"pmRNTOvXpxgZ","executionInfo":{"status":"ok","timestamp":1732632461389,"user_tz":-330,"elapsed":17,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}},"outputId":"e5c82191-dd4f-4825-dfa5-86c0078ef8d9"},"execution_count":24,"outputs":[{"output_type":"stream","name":"stdout","text":["apple is affordable\n","banana is affordable\n","cherry is expensive\n"]}]},{"cell_type":"markdown","source":["# Assignments"],"metadata":{"id":"J2kTNykRqV0M"}},{"cell_type":"markdown","source":["### **Tuples Assignments**  "],"metadata":{"id":"koAbZqgZqYb_"}},{"cell_type":"markdown","source":["1. Create a tuple of 10 random numbers. Write a program to:\n","   - Print the sum of all numbers in the tuple.\n","   - Print the maximum and minimum values from the tuple."],"metadata":{"id":"LRLTgXbPqiRv"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"9QvfSUMBqagz","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":16,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":25,"outputs":[]},{"cell_type":"markdown","source":["2. Write a program that takes a tuple of names and prints only the names that are longer than 5 characters."],"metadata":{"id":"bLmjVvoLqaxE"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"DDSLPhv8qexU","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":15,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":26,"outputs":[]},{"cell_type":"markdown","source":["### **Lists Assignments**  "],"metadata":{"id":"vawQFZYRqjRV"}},{"cell_type":"markdown","source":["1. Create a list of 10 integers. Write a program to:\n","   - Print all even numbers from the list.\n","   - Replace all odd numbers with `-1`.\n","   - Reverse the list and print it."],"metadata":{"id":"6p9ADZVSqjms"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"LR2IZpBaqkpy","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":14,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":27,"outputs":[]},{"cell_type":"markdown","source":["2. You have the following list of student marks:  \n","   ```python\n","   marks = [55, 78, 89, 92, 45, 60]\n","   ```  \n","   - Add 5 marks to each student.  \n","   - Remove all marks less than 60.  \n","   - Print the highest mark."],"metadata":{"id":"4PB8YaRvqj46"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"ZLUWudaVqlUY","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":14,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":28,"outputs":[]},{"cell_type":"markdown","source":["### **Dictionaries Assignments**"],"metadata":{"id":"JpZlsEBsqtdr"}},{"cell_type":"markdown","source":["1. Create a dictionary of 5 employees with their salaries. Write a program to:\n","   - Print the employee with the highest salary.  \n","   - Increase the salary of all employees by 10%.  \n","   - Remove an employee with a salary less than $5000."],"metadata":{"id":"EdjwI54kqsuT"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"ESy9EQ9zquFR","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":13,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":29,"outputs":[]},{"cell_type":"markdown","source":["2. You have the following dictionary:  \n","   ```python\n","   products = {\"apple\": 50, \"banana\": 20, \"cherry\": 75, \"date\": 40}\n","   ```  \n","   - Add a new product \"elderberry\" with a price of 60.  \n","   - Write a program to print only the products that cost more than 50.  \n","   - Decrease the price of \"banana\" by 5 and update the dictionary.\n"],"metadata":{"id":"aRgd2kV2quWx"}},{"cell_type":"code","source":["# Enter your code here"],"metadata":{"id":"n5nACDiEquox","executionInfo":{"status":"ok","timestamp":1732632461390,"user_tz":-330,"elapsed":11,"user":{"displayName":"Rohit Agarwal","userId":"01020789266871505834"}}},"execution_count":30,"outputs":[]}]}