python - How are these return statements different -

python - How are these return statements different -

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why python's list.append evaluate false? 5 answers

take these 2 sample code statments:

result = [] homecoming result.append(feed.entries[0])

&

result = [] result.append(feed.entries[0]) homecoming result

the first gives me error because method result passed complains of nontype not beingness iterable. why this? me both statements equivalent

the append method of list not homecoming anything

>>> = [] >>> type(a.append(12)) <type 'nonetype'>

so when you're doing:

return result.append(feed.entries[0])

you're returning none in cases, whereas when do:

result.append(....) homecoming result

you're returning list after has been mutated (modified) hence giving expected result.

python python-2.7