Python 12th Day

1. Generator

The essence of the generator is the iterator,

The simplest generator function is as follows:

1 deffoo (x): 1-4 rows defines a simple generator function2     yieldX+1 yield and return are different, return ends the entire function3     yieldX+2 2, 3, 4 yield and 8, 9, 10 __next__ one by one corresponding4     yieldX+35 6 7f = Foo (7) to create a generator object, assign a value to the variable F8 Print(F.__next__()) F calls a __next__ once to execute a yield in the function,9 Print(F.__next__()) Note One-time downward executionTen Print(F.__next__())

The results of the program run as follows:

8910

Note that if you call __next__ again, the program will error

Python 12th Day