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in python, a function returns `none` by default if there is no explicit return statement or if the return statement does not include a value. this can be useful in certain situations, but there are times when you may want to ensure that your function returns a specific value instead of `none`. here’s a tutorial on how to ensure that a python function does not return `none`, along with code examples.

1. understanding the default return value

when a function does not have a return statement, or if the return statement is empty, python returns `none`. here’s an example:



2. adding an explicit return statement

to prevent a function from returning `none`, you can add an explicit return statement with a value. here’s how you can do that:



3. returning a value based on conditions

you can also return different values based on conditions or logic within your function. here’s an example:



4. using default return values

you can also set a default return value so that your function always returns something, even if certain conditions are not met:



5. avoiding implicit returns of none

sometimes you may have code blocks that do not explicitly return a value. ensure that every code path in your function returns a value:



6. summary

to prevent a python function from returning `none`:
use an explicit return statement with a value.
ensure all conditional branches in your function return a value.
provide default return values if necessary.

by following these guidelines, you can ensure that your functions always return a meaningful value, improving the robustness of your code.

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