question: Write a Python tutorial for beginners. The tutorial should have 5 Sections, each marked with Section N, so that I can teach one section per day in my week-long course. Each section should contain at least 6 code examples that demonstrate different concepts.
answer: # Python Tutorial for Beginners
  
  Welcome to this week-long beginner's Python tutorial! Each section below contains essential concepts along with code examples to help you learn Python effectively. Let's dive in!
  
  ## Section 1: Introduction to Python and Basic Syntax
  
  In this section, we'll cover basic Python syntax, variables, and simple data types.
  
  ### 1.1 Hello World
  
  ```python
  print("Hello, World!")
  ```
  
  ### 1.2 Variables and Data Types
  
  ```python
  # Integer
  age = 25
  
  # Float
  height = 5.9
  
  # String
  name = "Alice"
  
  # Boolean
  is_student = True
  ```
  
  ### 1.3 Arithmetic Operations
  
  ```python
  # Addition
  sum = 10 + 5
  
  # Subtraction
  difference = 10 - 5
  
  # Multiplication
  product = 10 * 5
  
  # Division
  quotient = 10 / 5
  
  # Modulus
  remainder = 10 % 3
  ```
  
  ### 1.4 String Concatenation
  
  ```python
  first_name = "John"
  last_name = "Doe"
  full_name = first_name + " " + last_name
  print(full_name)
  ```
  
  ### 1.5 Input from the User
  
  ```python
  name = input("Enter your name: ")
  print("Hello, " + name + "!")
  ```
  
  ### 1.6 Comments
  
  ```python
  # This is a single-line comment
  
  """
  This is a
  multi-line comment
  """
  ```
  
  ## Section 2: Control Structures
  
  In this section, we’ll explore control flow using conditionals and loops.
  
  ### 2.1 If Statements
  
  ```python
  age = 18
  if age >= 18:
      print("You are an adult.")
  ```
  
  ### 2.2 If-Else Statements
  
  ```python
  temperature = 15
  if temperature > 20:
      print("It's warm outside.")
  else:
      print("It's cold outside.")
  ```
  
  ### 2.3 Elif Statements
  
  ```python
  score = 85
  if score >= 90:
      print("Grade: A")
  elif score >= 80:
      print("Grade: B")
  else:
      print("Grade: C")
  ```
  
  ### 2.4 For Loops
  
  ```python
  for i in range(5):
      print(i)
  ```
  
  ### 2.5 While Loops
  
  ```python
  count = 0
  while count < 5:
      print(count)
      count += 1
  ```
  
  ### 2.6 Nested Loops
  
  ```python
  for i in range(3):
      for j in range(2):
          print(f"i = {i}, j = {j}")
  ```
  
  ## Section 3: Functions and Modules
  
  Learn how to create functions and use modules to organize your code.
  
  ### 3.1 Defining a Function
  
  ```python
  def greet():
      print("Hello, World!")
  
  greet()
  ```
  
  ### 3.2 Function Parameters
  
  ```python
  def greet(name):
      print(f"Hello, {name}!")
  
  greet("Alice")
  ```
  
  ### 3.3 Return Values
  
  ```python
  def add(a, b):
      return a + b
  
  result = add(3, 5)
  print(result)
  ```
  
  ### 3.4 Importing Modules
  
  ```python
  import math
  
  print(math.sqrt(16))
  ```
  
  ### 3.5 Using `from` to Import Specific Functions
  
  ```python
  from math import pi, sqrt
  
  print(pi)
  print(sqrt(25))
  ```
  
  ### 3.6 Creating and Using Your Own Module
  
  Create a file named `mymodule.py`:
  
  ```python
  def say_hello():
      return "Hello from my module!"
  ```
  
  Use it in another file:
  
  ```python
  import mymodule
  
  print(mymodule.say_hello())
  ```
  
  ## Section 4: Data Structures
  
  Understand and use lists, tuples, sets, and dictionaries in Python.
  
  ### 4.1 Lists
  
  ```python
  fruits = ["apple", "banana", "cherry"]
  print(fruits[0])  # Outputs: apple
  ```
  
  ### 4.2 Tuples
  
  ```python
  coordinates = (10, 20)
  print(coordinates[1])  # Outputs: 20
  ```
  
  ### 4.3 Sets
  
  ```python
  unique_numbers = {1, 2, 3, 4, 5}
  unique_numbers.add(6)
  print(unique_numbers)
  ```
  
  ### 4.4 Dictionaries
  
  ```python
  person = {"name": "Alice", "age": 25}
  print(person["name"])  # Outputs: Alice
  ```
  
  ### 4.5 List Comprehensions
  
  ```python
  squares = [x ** 2 for x in range(5)]
  print(squares)
  ```
  
  ### 4.6 Dictionary Comprehensions
  
  ```python
  squares_dict = {x: x ** 2 for x in range(5)}
  print(squares_dict)
  ```
  
  ## Section 5: File Handling and Exception Handling
  
  Learn how to handle files and manage exceptions.
  
  ### 5.1 Reading a File
  
  ```python
  with open('example.txt', 'r') as file:
      content = file.read()
      print(content)
  ```
  
  ### 5.2 Writing to a File
  
  ```python
  with open('example.txt', 'w') as file:
      file.write("Hello, World!")
  ```
  
  ### 5.3 Appending to a File
  
  ```python
  with open('example.txt', 'a') as file:
      file.write("\nAppended text.")
  ```
  
  ### 5.4 Handling Exceptions
  
  ```python
  try:
      result = 10 / 0
  except ZeroDivisionError:
      print("Cannot divide by zero!")
  ```
  
  ### 5.5 Using `finally` with `try`
  
  ```python
  try:
      file = open('example.txt', 'r')
      # Perform file operations
  finally:
      file.close()
  ```
  
  ### 5.6 Raising Exceptions
  
  ```python
  def check_age(age):
      if age < 0:
          raise ValueError("Age cannot be negative!")
      return "Valid age"
  
  print(check_age(10))
  ```
  
  This concludes the beginner's Python tutorial. By completing each section, you should have a solid foundation in Python programming. Happy coding!