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week_9/01-Tuple.md

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+## Tuple
+
+Tuples are used to store multiple items in a single variable.
+
+Tuple is one of the four built-in data types in Python used to store collections of data. The other three are List, Set, and Dictionary, each with different qualities and usage.
+
+### Ordered
+
+When we say that tuples are ordered, it means that the items have a defined order, and that order will not change.
+
+### Unchangeable
+
+Tuples are unchangeable, meaning that we cannot change, add, or remove items after the tuple has been created.
+
+### Allow Duplicates
+
+A tuple is a collection that is ordered and unchangeable. Tuples can contain duplicate items.
+
+Tuples are written with round brackets `()`.
+
+```python
+thistuple = ("apple", "banana", "cherry")
+print(thistuple)
+print(type(thistyple))
+```
+## Modifying Tuples
+
+Tuples in Python are immutable, which means you **cannot** directly add or remove items from them once they are created. However, there are some workarounds to modify tuples:
+
+### Adding Items to a Tuple
+
+To add an item to a tuple, you can convert the tuple to a list, add the item, and then convert it back to a tuple.
+
+```python
+thistuple = ("apple", "banana", "cherry")
+temp_list = list(thistuple)  # Convert tuple to list
+temp_list.append("orange")   # Add item to the list
+thistuple = tuple(temp_list) # Convert list back to tuple
+print(thistuple)  # Output: ('apple', 'banana', 'cherry', 'orange')
+```
+
+### Tuple Practice Questions
+
+## Creating Tuples:
+Create a tuple named fruits that contains the items "apple", "banana", and "cherry".
+
+## Accessing Elements:
+Given a tuple fruits = ("apple", "banana", "cherry"), access and print the second item in the tuple.
+
+## Negative Indexing:
+Using the tuple fruits = ("apple", "banana", "cherry"), print the last item using negative indexing.
+
+## Tuple Length:
+Create a tuple named colors with the values "red", "green", "blue", and "yellow". Write a program to find and print the length of the tuple.
+
+## Tuple Slicing:
+Given the tuple numbers = (10, 20, 30, 40, 50, 60), slice the tuple to get a new tuple with the elements 20, 30, and 40.
+
+## Concatenating Tuples:
+Create two tuples, tuple1 with values (1, 2, 3) and tuple2 with values (4, 5, 6). Concatenate these two tuples into a new tuple.
+
+## Finding Elements:
+Write a program to check if the element "python" exists in the tuple languages = ("java", "python", "c++", "ruby").
+
+## Tuple Unpacking:
+Given a tuple person = ("John", 25, "Engineer"), unpack the values into separate variables and print them.
+
+## Immutable Nature:
+Write a program to try to change the first item of the tuple animals = ("cat", "dog", "rabbit") to "bird". What happens?
+
+## Nested Tuples:
+Create a tuple named nested_tuple with values (1, (2, 3), 4). Access and print the value 3 from the nested tuple.
+
+## Converting List to Tuple:
+Convert the list weekdays = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"] to a tuple and print it.
+
+## Iterating Over a Tuple:
+Write a program to iterate through the tuple prime_numbers = (2, 3, 5, 7, 11) and print each element.
+
+## Tuple Methods:
+Use the tuple method count() to find out how many times the value 4 appears in the tuple numbers = (1, 2, 3, 4, 4, 4, 5).
+
+## Tuple Index:
+Write a program to find the index of the value 100 in the tuple data = (10, 20, 30, 100, 50, 100).
+
+## Deleting a Tuple:
+Create a tuple months = ("January", "February", "March"). Delete this tuple and try printing it afterward. What happens?

week_9/02-Dictionaries.md

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+## Dictionary
+
+Dictionaries are used to store data values in **key: value** pairs.
+
+A dictionary is a collection that is ordered*, changeable, and does not allow duplicates. Dictionaries are written with curly brackets `{}`, and each key is associated with a specific value.
+
+### Key Characteristics of Dictionaries
+
+- **Ordered**: As of Python 3.7, dictionaries maintain the order of items based on the insertion order.
+- **Changeable**: You can add, modify, and remove items in a dictionary after it has been created.
+- **No Duplicates**: Dictionaries do not allow duplicate keys. If a duplicate key is entered, the last value associated with the key will overwrite the previous one.
+
+### Basic Example of a Dictionary
+
+```python
+# Creating a dictionary
+thisdict = {
+    "brand": "Ford",
+    "model": "Mustang",
+    "year": 1964
+}
+
+# Accessing a value
+print(thisdict["model"])  # Output: Mustang
+
+# Adding a new key-value pair
+thisdict["color"] = "red"
+print(thisdict)  # Output: {'brand': 'Ford', 'model': 'Mustang', 'year': 1964, 'color': 'red'}
+
+# Modifying an existing value
+thisdict["year"] = 2020
+print(thisdict)  # Output: {'brand': 'Ford', 'model': 'Mustang', 'year': 2020, 'color': 'red'}
+
+# Removing an item
+thisdict.pop("model")
+print(thisdict)  # Output: {'brand': 'Ford', 'year': 2020, 'color': 'red'}
+
+# Checking if a key exists
+if "brand" in thisdict:
+    print("Yes, 'brand' is a key in the dictionary")  # Output: Yes, 'brand' is a key in the dictionary
+```
+
+### Dictionary Practice Questions
+
+## Creating a Dictionary:
+Create a dictionary named student with the following key-value pairs: "name": "Alice", "age": 22, "major": "Computer Science". Print the dictionary.
+
+## Accessing Dictionary Values:
+Given the dictionary car = {"brand": "Toyota", "model": "Corolla", "year": 2021}, write a code snippet to print the value associated with the key "model".
+
+## Modifying Dictionary Values:
+Modify the value of the key "year" in the dictionary car to 2022 and print the updated dictionary.
+
+## Adding a New Key-Value Pair:
+Add a new key-value pair "color": "blue" to the dictionary car and print the updated dictionary.
+
+## Removing a Key-Value Pair:
+Remove the key-value pair with the key "major" from the dictionary student and print the updated dictionary.

week_9/Dictionaries.py

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+# Creating a dictionary
+thisdict = {
+    "brand": "Ford",
+    "model": "Mustang",
+    "year": 1964
+}
+
+# Accessing a value
+print(thisdict["model"])  # Output: Mustang
+
+# Adding a new key-value pair
+thisdict["color"] = "red"
+print(thisdict)  # Output: {'brand': 'Ford', 'model': 'Mustang', 'year': 1964, 'color': 'red'}
+
+# Modifying an existing value
+thisdict["year"] = 2020
+print(thisdict)  # Output: {'brand': 'Ford', 'model': 'Mustang', 'year': 2020, 'color': 'red'}
+
+# Removing an item
+thisdict.pop("model")
+print(thisdict)  # Output: {'brand': 'Ford', 'year': 2020, 'color': 'red'}
+
+# Checking if a key exists
+if "brand" in thisdict:
+    print("Yes, 'brand' is a key in the dictionary")

week_9/Tuple.py

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+tuple1 = ("apple", "banana", "cherry")
+print(tuple1)
+print(type(tuple1))
+print(len(tuple1))
+
+
+tuple1 = ("apple", "banana", "cherry")
+temp_list = list(tuple1)  # Convert tuple to list
+temp_list.append("orange")   # Add item to the list
+thistuple = tuple(temp_list) # Convert list back to tuple
+print(thistuple)  # Output: ('apple', 'banana', 'cherry', 'orange')