Python Advanced Features-builder

A mechanism that loops one side of a loop in Python as a generator (generator)

Executes at each invocation next() , yield encounters a statement return, and resumes execution from the last statement returned yield .

Generate list

 for  in range ()>>>1, 4, 9, 16, 25, 36, 49, 64, 81]

Generate generator

 for  in range (+)>>> G<generator object <genexpr> at 0x7f5cc1ce3c80>

两者的区别就在于最外层的[]和（），Lis a list, and g is a generator

Yield generator

>>>defOdd (): ...Print('Step 1')... yield1... Print('Step 2')... yield(3)... Print('Step 3')... yield(5)...>>> o =Odd ()>>>Next (o) Step11>>>Next (o) Step23>>>Next (o) Step35>>>Next (O) Traceback (most recent): File"<stdin>", Line 1,inch<module>stopiteration

Python Advanced Features-builder