Python functions can return values or conclude without returning anything. While these actions may appear similar, there are subtle differences and preferred use cases for each syntax.
"my_func1" explicitly returns "None" to indicate that it's meant to return a value, albeit that value is empty. This is useful when the function could potentially return different values, but in this case happens to return nothing.
"my_func2" uses "return" without an argument, signaling an early exit from the function. It's equivalent to "break" in loops, primarily used when exiting a function is the intended action and no return value is needed.
"my_func3" does not include a "return" statement at all. By default, Python functions return "None" if no value is explicitly returned. This is useful when the function serves as a standalone action and its completion indicates success.
return None is appropriate when:
return is advisable when:
No return is suitable when:
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