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 ...

2015年2月14日 · By using a return value, the function does one thing: do the calculation, and the caller can do whatever it wants with it: print it, write it to a database, use it as part of some larger …

How does Python know this isn't a recursive function that calls itself? When the function runs does it just keep going through the program until it finds a return?

2017年3月10日 · 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 Additional …

2013年1月17日 · 744 It's a function annotation. In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 …

Suppose I have a function like: def foo(): x = 'hello world' How do I get the function to return x, in such a way that I can use it as the input for another function or use the variable within...

2008年10月24日 · Yield in Python used to create a generator function. Generator function behaves like an iterator, which can be used in loop to retrieve items one at a time. When a generator function is …

Now fire up Python 3.x and do the same thing; it says, quite plainly, that it will return an iterator. So maybe you don't see why it should do it, but I am talking about what it actually does.

2017年2月19日 · The return function is used to pass a value back to where a certain function is called. The way I see it, you're essentially trying to overwrite the return value. You should use it in a function …

2012年9月30日 · Worth noting that if you omitted the return at the end of the "do_2" function the return value would still be None. You can close a function without the return just by dedenting out of the …