
python - What is the purpose of the return statement? How is it ...
The return statement causes your function to exit and hand back a value to its caller. The point of functions in general is to take in inputs and return something. The return statement is used …
It is more efficient to use if-return-return or if-else-return?
Feb 8, 2012 · Since the return statement terminates the execution of the current function, the two forms are equivalent (although the second one is arguably more readable than the first). The …
python: return, return None, and no return at all -- is there any ...
Note that there's a stylistic difference. return None implies to me that the function sometimes has a non- None return value, but at the location of return None, there is no such return value. …
python - How do I get ("return") a result (output) from a function?
We can make a tuple right on the return line; or we can use a dictionary, a namedtuple (Python 2.6+), a types.simpleNamespace (Python 3.3+), a dataclass (Python 3.7+), or some other …
In Python, if I return inside a "with" block, will the file still close?
Mar 27, 2012 · Consider the following: with open (path, mode) as f: return [line for line in f if condition] Will the file be closed properly, or does using return somehow bypass the context …
python - What is the formal difference between "print" and "return ...
Dec 11, 2017 · The return statement returns with a value from a function. return without an expression argument returns None. Falling off the end of a function also returns None.
Is there a way to return literally nothing in python?
There is no such thing as "returning nothing" in Python. Every function returns some value (unless it raises an exception). If no explicit return statement is used, Python treats it as returning …
Does every Python function have to return at the end?
Mar 10, 2017 · Long answer: The return statement is not required in Python, and reaching the end of the function's code without a return will make the function automatically return None …
python - Should a return statement have parentheses? - Stack …
Remember that the return keywords returns the result of a statement. So if you only use , in your multiple assignment statements and tuple constructions, omit the (), but if you use () for value …
python - Is it possible to write single line return statement with if ...
Sep 7, 2013 · Is is possible to return from a method in single line in python Looking for something like this return None if x is None Tried above, and it is invalid syntax I could easily do: if x is …