There is a function and a for loop:
def helper():
return [1,2,3]
for i in helper():
print(i)
I am wondering if the helper function would only be called once at the initialization of the for loop. As I am thinking that if I call the function and assign the return array to a variable in advance, which would be used in the for loop like this:
def helper():
return [1,2,3]
temp = helper()
for i in temp:
print(i)
Is that with less time complexity?
Thanks!
use the yield operation:
def helper():
for i in [1,2,3]:
yield i
for i in helper():
print(i)
in this case the helper()
method would return the i
value during each iteration to the calling for
loop.
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