Is there an abbreviation for "getting all the output from the generator"?

Question

Is there a single line expression for:

for thing in generator: yield thing 

I tried yield generator no avail.

Answer 1

In Python 3.3+, you can use yield from . For instance,

 >>> def get_squares(): ... yield from (num ** 2 for num in range(10)) ... >>> list(get_squares()) [0, 1, 4, 9, 16, 25, 36, 49, 64, 81] 

It can be used with any iterable. For instance,

 >>> def get_numbers(): ... yield from range(10) ... >>> list(get_numbers()) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> def get_squares(): ... yield from [num ** 2 for num in range(10)] ... >>> list(get_squares()) [0, 1, 4, 9, 16, 25, 36, 49, 64, 81] 

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Unfortunately, Python 2.7 does not have an equivalent construct: '(

Answer 2

You can use list comprehension to get all the elements from the generator (assuming the end of the generator):

 [x for x in generator] 

Answer 3

Here is a simple one-line key valid in Python 2.5+ on request; -):

 for thing in generator: yield thing