how to pass default parameter in python
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sure! here's a tutorial on how to pass default parameters in python:
in python, default parameters allow you to define a default value for a function argument, which is used when the caller doesn't provide a value for that argument. this feature enhances flexibility and readability in your code by providing sensible defaults while still allowing for customization.
the syntax for defining a default parameter in a python function is straightforward:
here, default_value is the default value assigned to parameter2. if parameter2 is not provided when calling the function, it will take on the value of default_value.
let's illustrate this with an example. suppose we have a function greet_user which greets a user with a customizable message. we'll set a default message in case no message is provided:
in this example:
mutable default values: be cautious when using mutable objects (e.g., lists, dictionaries) as default values. they are created only once when the function is defined, leading to unexpected behavior if they are modified within the function. to avoid this, use immutable objects like strings or numbers as default values, or use none as a placeholder and assign a new mutable object within the function if needed.
order of parameters: parameters with default values should be placed after required parameters. python does not allow non-default parameters to follow default parameters in a function's parameter list.
default parameters in python are a powerful feature that enhances the flexibility and readability of your code. by understanding how to use them effectively, you can write more concise and expressive functions that handle a variety of use cases.
i hope this tutorial helps you understand how to use default parameters in python functions effectively! let me know if you have any questions or need further clarification.
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