python default value argument
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In Python, you can define default values for function parameters. Default values are used when a value for a parameter is not provided during the function call. This feature allows you to make your functions more flexible and provide a default behavior while still allowing customization when needed.
Here, param1, param2, etc., are parameters with default values default_value1, default_value2, etc.
In the example above, the greet function takes two parameters, name and greeting. The greeting parameter has a default value of "Hello". When calling the function, if you provide a value for greeting, it will use that value; otherwise, it will use the default value.
Flexibility: Users can choose not to specify every argument if they are satisfied with the default behavior.
Readability: Default values make the function calls more concise and easier to read.
Backward Compatibility: If you later add new parameters to a function, existing code that calls the function without specifying those parameters will still work as long as default values are provided.
Default values are evaluated only once: The default value expressions are evaluated when the function is defined, not each time the function is called. Be cautious when using mutable default values (e.g., lists or dictionaries).
Positional and keyword arguments: If you provide values for some parameters using the positional method and skip others, make sure to use keyword arguments to avoid confusion.
Now you have a basic understanding of Python default value arguments. Incorporate this feature into your functions to enhance flexibility and maintainability in your code.
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