diff --git a/document-python-code-with-chatgpt/README.md b/document-python-code-with-chatgpt/README.md
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+# Document Your Python Code and Projects With ChatGPT
+
+This folder provides the code examples for the Real Python tutorial [Document Your Python Code and Projects With ChatGPT](https://realpython.com/document-python-code-with-chatgpt/).
diff --git a/document-python-code-with-chatgpt/circle.py b/document-python-code-with-chatgpt/circle.py
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+"""Prompt
+Write NumPy-style docstrings for the following class and its methods:
+
+class Circle:
+    def __init__(self, radius):
+        self.radius = radius
+
+    def calculate_area(self):
+        return round(math.pi * self.radius ** 2, 2)
+"""
+
+import math
+
+
+# Output:
+class Circle:
+    """
+    A Circle class to perform some circle-related operations.
+
+    Parameters
+    ----------
+    radius : float
+        The radius of the circle.
+
+    Attributes
+    ----------
+    radius : float
+        The radius of the circle.
+
+    Methods
+    -------
+    calculate_area():
+        Calculates the area of the circle.
+    """
+
+    def __init__(self, radius):
+        """
+        Constructs all the necessary attributes for the circle object.
+
+        Parameters
+        ----------
+        radius : float
+            The radius of the circle.
+        """
+        self.radius = radius
+
+    def calculate_area(self):
+        """
+        Calculate the area of the circle.
+
+        Returns
+        -------
+        float
+            The area of the circle rounded to 2 decimal places.
+        """
+        return round(math.pi * self.radius**2, 2)
diff --git a/document-python-code-with-chatgpt/code_explanation.py b/document-python-code-with-chatgpt/code_explanation.py
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+"""Prompt
+Explain how the following function works:
+
+def find_extremes(iterable):
+    data = tuple(iterable)
+    if len(data) == 0:
+        raise ValueError("input iterable must not be empty")
+    return min(data), max(data)
+"""
diff --git a/document-python-code-with-chatgpt/docstring_1.py b/document-python-code-with-chatgpt/docstring_1.py
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+++ b/document-python-code-with-chatgpt/docstring_1.py
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+""""Prompt
+Write a single-line docstring for the following function:
+
+def add(a, b):
+    return a + b
+"""
+
+
+# Output:
+def add(a, b):
+    """Return the sum of a and b."""
+    return a + b
diff --git a/document-python-code-with-chatgpt/docstring_2.py b/document-python-code-with-chatgpt/docstring_2.py
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index 0000000000..b576d82858
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+++ b/document-python-code-with-chatgpt/docstring_2.py
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+"""Propmt
+Write a Google-style docstring for the following function:
+
+def add(a, b):
+    return a + b
+"""
+
+
+# Output:
+def add(a, b):
+    """Sum two numbers.
+
+    Args:
+        a (int or float): The first number.
+        b (int or float): The second number.
+
+    Returns:
+        int or float: The sum of the two numbers.
+    """
+    return a + b
+
+
+"""Prompt
+Write a Numpy-style docstring for the following function:
+
+def add(a, b):
+    return a + b
+"""
+
+
+# Output:
+def add_(a, b):
+    """
+    Sum two numbers.
+
+    Parameters
+    ----------
+    a : int or float
+        The first number to be added.
+    b : int or float
+        The second number to be added.
+
+    Returns
+    -------
+    int or float
+        The sum of a and b.
+    """
+    return a + b
+
+
+"""Prompt
+Write a Sphinx-style docstring for the following function:
+
+def add(a, b):
+    return a + b
+"""
+
+
+# Output:
+def add__(a, b):
+    """
+    Calculate the sum of two numbers.
+
+    :param a: The first number.
+    :type a: int or float
+    :param b: The second number.
+    :type b: int or float
+    :return: The sum of the two numbers.
+    :rtype: int or float
+    """
+    return a + b
diff --git a/document-python-code-with-chatgpt/doctest_tests.py b/document-python-code-with-chatgpt/doctest_tests.py
new file mode 100644
index 0000000000..4430d9a6bf
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+++ b/document-python-code-with-chatgpt/doctest_tests.py
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+"""Prompt
+Write a NumPy-style docstring for the following function.
+Add a section with usage examples as doctest tests:
+
+def add(a, b):
+    return a + b
+"""
+
+
+# Output:
+def add(a, b):
+    """
+    Add two numbers together.
+
+    This function takes two numbers (either integers or floats)
+    as arguments and returns their sum.
+
+    Parameters
+    ----------
+    a : int or float
+        The first number to add.
+    b : int or float
+        The second number to add.
+
+    Returns
+    -------
+    int or float
+        The sum of the two input numbers.
+
+    Examples
+    --------
+    >>> add(1, 2)
+    3
+    >>> add(5.5, 2.5)
+    8.0
+    >>> add(100, -50)
+    50
+    """
+    return a + b
diff --git a/document-python-code-with-chatgpt/interval.py b/document-python-code-with-chatgpt/interval.py
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+++ b/document-python-code-with-chatgpt/interval.py
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+"""Prompt
+Write a Google-style docstring for a function with the following signature:
+
+def in_interval(number, start, end):
+"""
+
+
+# Output:
+def in_interval(number, start, end):
+    """
+    Checks if a given number is within a specified interval.
+
+    This function takes three arguments: a number, and the start
+    and end points of an interval.
+    It checks whether the given number falls within the specified
+    interval or not.
+
+    Args:
+        number (int or float): The number to check.
+        start (int or float): The starting point of the interval.
+        end (int or float): The ending point of the interval.
+
+    Returns:
+        bool: True if the given number falls within the interval,
+        False otherwise.
+
+    Raises:
+        ValueError: If the start is larger than the end, or if
+        the number, start, or end are not numbers.
+    """
diff --git a/document-python-code-with-chatgpt/prime.py b/document-python-code-with-chatgpt/prime.py
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+++ b/document-python-code-with-chatgpt/prime.py
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+"""Prompt
+Write a Google-style docstring for a function that takes an
+integer as an argument and determines whether it’s a primary
+number.
+"""
+
+
+# Output:
+def is_primary_number(n):
+    """
+    Determines if an input integer is a primary number.
+
+    This function takes an integer as an argument and checks
+    whether it is a primary number. A primary number is a
+    positive natural number greater than 1 that has no positive
+    integer divisors other than 1 and itself.
+
+    Args:
+        n (int): The integer to check.
+
+    Returns:
+        bool: True if the input integer is a primary number,
+        False otherwise.
+
+    Raises:
+        ValueError: If n is less than or equal to 1.
+    """
diff --git a/document-python-code-with-chatgpt/usage_examples.py b/document-python-code-with-chatgpt/usage_examples.py
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+++ b/document-python-code-with-chatgpt/usage_examples.py
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+"""Prompt
+Write three usage examples for the following function.
+Add explanations to each example:
+
+def is_divisible(a, b):
+    if not a % b:
+        return True
+    return False
+"""