Python one-liner
Question:
I want a one-liner solution in Python of the following code, but how?
total = 0
for ob in self.oblist:
total += sum(v.amount for v in ob.anoutherob)
It returns the total value. I want it in a one-liner. How can I do it?
Answers:
You can just collapse the for loop into another level of comprehension:
total = sum(sum(v.amount for v in ob.anotherob) for ob in self.oblist)
There isn’t any need to double up on the sum() calls:
total = sum(v.amount for ob in self.oblist for v in ob.anotherob)
I want a one-liner solution in Python of the following code, but how?
total = 0
for ob in self.oblist:
total += sum(v.amount for v in ob.anoutherob)
It returns the total value. I want it in a one-liner. How can I do it?
You can just collapse the for loop into another level of comprehension:
total = sum(sum(v.amount for v in ob.anotherob) for ob in self.oblist)
There isn’t any need to double up on the sum() calls:
total = sum(v.amount for ob in self.oblist for v in ob.anotherob)