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    Upvotes760Top Answeredited Nov 18, 2019 at 11:26

    On the actual behavior, there is no difference. They all return None and that's it. However, there is a time and place for all of these. The following instructions are basically how the different methods should be used (or at least how I was taught they should be used), but they are not absolute rules so you can mix them up if you feel necessary t...

    def get_mother(person):
    if is_human(person):
    return person.mother
    else:
    return None

    Using return

    This is used for the same reason as break in loops. The return value doesn't matter and you only want to exit...

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  3. Stack Overflow
    https://stackoverflow.com/questions/15300550

    python - return, return None, and no return at all? - Stack …

    Why would a function end with "return 0" instead of "return" in python ...Sep 29, 2012
    python - Raise exception vs. return None in functions?
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  4. Real Python
    https://realpython.com/python-return-statement

    The Python return Statement: Usage and Best Practices

    WebReturning None Explicitly. Remembering the Return Value. Avoiding Complex Expressions. Returning Values vs Modifying Globals. Using …

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    • Finxter
      https://blog.finxter.com/python-return-nothing-null-none-nan-from-function

      Python Return Nothing/Null/None/NaN From Function

    • Question & Answer
      Software Engineering Stack Exchange
      Question
      Guidelines for returning None vs. raising Error for Python string ...
      Let's say we have a function that checks if a given patter…
      Answer · 5 votes
      I would definitely go for the return None option. …
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      Stack Overflow
      Question
      NoReturn vs. None in "void" functions - type annotations in Python 3.6.
      Python 3.6 supports type annotation, like: de…
      Answer · 45 votes
      NoReturn means the function never returns a …
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      Stack Overflow
      Question
      return, return None, and no return at all?
      Consider three functions: def my_func1(): print "Hello World" return None de…
      Answer · 663 votes
      On the actual behavior, there is no difference. T…
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      Stack Overflow
      Question
      Raise exception vs. return None in functions?
      This question already has answers here : Is it better to use an ex…
      Answer · 100 votes
      It's really a matter of semantics. What does f…
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      Question
      Should I Return None or (None, None)?
      We have a object method that returns a city/state tuple, i.e. ('Boston', 'MA') . Under …
      Answer · 57 votes
      I would return None . If there is no result, why r…
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      Question
      Is it ok to skip "return None"?
      I wonder if it is bad manner to skip return None , when it is not needed. Example: def f…
      Answer · 72 votes
      Like you said, return None is (almost) never neede…
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      Question
      Why would a function end with "return 0" instead of "return" in python?
      Could you please explain the difference between "ret…
      Answer · 7 votes
      Depends on usage: >>> def ret_Nothing(): ... ret…
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    • sebhastian
      https://sebhastian.com/python-return-none-guide

      When to use the return None statement in Python | sebhastian

    • Better Programming
      https://betterprogramming.pub/everything-yo…

      Everything You Ever Wanted to Know About Python …

      WebSep 4, 2020 · 1. Return Type Is None. Example 1: If there is no return statement inside the functions, it returns None. def add(): pass. print(add()) #Output:None. Example 2: If the return statement is not reached in the …

    • adventuresinmachinelearning.com
      https://www.adventuresinmachinelearning.com/...

      Handling None Values in Python: Best Practices and Avoiding …

    • People also ask
      What is the difference between return and return none in Python?There is no practical difference between using return and return None in Python. Both statements will result in the function returning the None value. However, using return None can be considered more explicit and self-explanatory, making the code easier to understand.

      Python Return Nothing/Null/None/NaN From Function

      blog.finxter.com
      How can a python function return nothing?This section discusses different ways a Python function can return nothing, specifically: Return None, Return Null, and Return NaN. In Python, a function returns None implicitly if there is no explicit return statement. However, you can also use the return statement followed by the keyword None to indicate that a function should return no value.

      Python Return Nothing/Null/None/NaN From Function

      blog.finxter.com
      Does a python function have a return value?A Python function will always have a return value. There is no notion of procedure or routine in Python. So, if you don’t explicitly use a return value in a return statement, or if you totally omit the return statement, then Python will implicitly return a default value for you. That default return value will always be None.

      The Python return Statement: Usage and Best Practices

      realpython.com
      Can a python function return no results?Python functions can return various types of results or even no results. This section discusses different ways a Python function can return nothing, specifically: Return None, Return Null, and Return NaN. In Python, a function returns None implicitly if there is no explicit return statement.

      Python Return Nothing/Null/None/NaN From Function

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    • Real Python
      https://realpython.com/lessons/returning-none-explicitly

      Returning None Explicitly – Real Python

    • AskPython
      https://www.askpython.com/python/python-r…

      Python return Statement - AskPython

      WebMay 11, 2023 · If there are no return statements, then it returns None. If the return statement contains an expression, it’s evaluated first and then the value is returned. The return statement terminates the function …

    • Python Morsels
      https://www.pythonmorsels.com/none

      None in Python - Python Morsels

    • Code with C
      https://www.codewithc.com/where-python-returns...

      Where Python Returns Nothing: Understanding Python’s None

    • Adam Johnson
      https://adamj.eu/tech/2021/05/20/python-type-hints...

      Python type hints: what’s the point of NoReturn - Adam J

    • Real Python
      https://realpython.com/python-type-hints-multiple-types

      How to Use Type Hints for Multiple Return Types in Python

    • Stack Overflow
      https://stackoverflow.com/questions/7082966

      python - Should I Return None or (None, None)? - Stack Overflow

    • julianhysi.com
      https://julianhysi.com/post/4

      Julian's Blog - Bare return vs return None vs no return

    • Python Tutorial
      https://www.pythontutorial.net/advanced-python/python-none

      Python None

    • Software Engineering Stack Exchange
      https://softwareengineering.stackexchange.com/questions/314960

      Guidelines for returning None vs. raising Error for Python string ...

    • Stack Overflow
      https://stackoverflow.com/questions/4027586

      python - Is it ok to skip "return None"? - Stack Overflow

    • GeeksForGeeks
      https://www.geeksforgeeks.org/python-none-keyword

      Python None Keyword - GeeksforGeeks

    • Real Python
      https://realpython.com/null-in-python

      Null in Python: Understanding Python's NoneType Object

    • Python
      https://docs.python.org/3.14/library/subprocess.html

      subprocess — Subprocess management — Python 3.14.0a0 …

    • Stack Overflow
      https://stackoverflow.com/questions/48038149

      NoReturn vs. None in "void" functions - type annotations in …

    • Python
      https://docs.python.org/3.14/library/re.html

      re — Regular expression operations — Python 3.14.0a0 …

    • Stack Overflow
      https://stackoverflow.com/questions/64542204

      python - How to return None? - Stack Overflow

    • Stack Overflow
      https://stackoverflow.com/questions/78446145/why...

      python - Why am I getting a return of None? - Stack Overflow

    • Stack Overflow
      https://stackoverflow.com/questions/78462165/how...

      How to return multiple list in a python return statement

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