Understanding the Differences Between Single Quotes, Double Quotes, and Triple Quotes in Python

The differences between single quotes, double quotes, and triple quotes in Python:

1. 1. Single quotes (‘) and double quotes (” )：

• • Functionally identical：Both are used to define single-line strings and can be used interchangeably.
• • Selection criteria：Primarily based on the type of quotes contained within the string to avoid using escape characters.
• • If the string contains a single quote, enclose it in double quotes.
• • If the string contains double quotes, enclose it in single quotes.
• • Example：

  str1 = 'Hello, world!'
  str2 = "Hello, world!"
  str3 = "It's a beautiful day"
  str4 = 'He said, "Hello!"'

• • Used for multi-line strings：Can span multiple lines, making it convenient for writing long texts or strings that include newline characters.
• • No need for escaping：Can include both single and double quotes within the string without escape characters.
• • Commonly used for documentation strings (docstrings)：Used to describe modules, functions, or classes, typically placed on the first line of the definition.
• • Example：

  str5 = '''This is a
  multi-line string.'''
  str6 = """This is another
  multi-line string."
  
  def greet(name):
      """
      This function greets the person passed in as a parameter.
      """
      print(f"Hello, {name}!")

Summary：

• • Single quotes and double quotes：Functionally the same, the choice depends on the type of quotes contained within to avoid escape characters.
• • Triple quotes：Used for multi-line strings and documentation strings, suitable for handling long texts or descriptive content.

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