Combining generators

I have a function that returns a list via yield. I use this function as follows:

myList = []
for i in range(10):
    myList = myList + list(myListGenerator(i))

pickleFile = open("mystuff.dat", "wb")
pickle.dump(myList, pickleFile)
pickleFile.close() 

I'm just wondering if this is the most efficient way to pickle the data or if I can combine the generators (m开发者_Python百科yListGenerator(0), myListGenerator(1), etc) into one generator which can then be used by pickle.

Sorry if my question sonds daft but I'm new to both generators and pickle... Thanks,

Barry

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You can combine the results of the generators (created using a generator expression) into a single list with itertools.chain.from_iterable:

pickle.dump(list(itertools.chain.from_iterable(
              myListGenerator(i) for i in range(10))), pickleFile)

Or rewrite the generator to include the range call internally, and then just do

pickle.dump(list(myListGenerator(10)), pickleFile)