What does the return statement do? How should it be used in Python? How does return differ from print? See also Often, people try to use print in a loop inside a function in order to see multiple ...

Using return None This tells that the function is indeed meant to return a value for later use, and in this case it returns None. This value None can then be used elsewhere. return None is never used if …

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 manager?

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 class (perhaps …

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 None. So, …

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 efficiency of …

Jul 7, 2015 · I've been having some problems with the return statement and I can't seem to figure out what's wrong. It seemed to work fine yesterday, but today no function that contains it seems to work …

Jul 23, 2012 · No, unfortunately, once you hit the return statement, you return from the function/method (either with or without a return value). From the docs for return: return leaves the current function call …

Jul 4, 2020 · How can I use `return` to get back multiple values from a loop? Can I put them in a list? Asked 8 years, 6 months ago Modified 3 years ago Viewed 189k times

At compile time, if the definition of an object includes annotations, the Python compiler will write the expressions computing the annotations into its own function. When run, the function will return the …