Сумма элементов между первым и последним отрицательными элементами списка

data = [12.89,14.54,-7.86,4.5,3.2,7.9,-11.2,10.1,22.96,-19.18,14.934,6.11]
 
index_minus = list(data.index(i) for i in data if i<0)
print(sum(list(data[i] for i in range(min(index_minus)+1,max(index_minus)))))

data = [12.89,14.54,-7.86,4.5,3.2,7.9,-11.2,10.1,22.96,-19.18,14.934,6.11]
k = []
count = sum_i = 0
for i in data:
    if i < 0:
        k.append(i)
        count +=1
 
for i in data:
    if i == k[0] or sum_i != 0:
        if i == k[count-1]:
            break
        sum_i = sum_i + i
print(sum_i - k[0])

data = [12.89, 14.54, -7.86, 4.5, 3.2, 7.9, -11.2, 10.1, 22.96, -19.18, 14.934, 6.11]
 
for i in range(len(data) - 1, 0, -1):
    if data[i] < 0:
        lastneg = i
        break
res = 0
firstneg = False
for e in data[:lastneg]:
    if firstneg:
        res += e
    if e < 0:
        firstneg = True
print(res)

for e in __builtins__.__dict__:
    print(e)

data = [12.89, 14.54, -7.86, 4.5, 3.2, 7.9, -11.2, 10.1, 22.96, -19.18, 14.934, 6.11]
 
temp, res = 0, 0
firstneg = False
 
for e in data:
    if e < 0:
        res += temp
        temp = 0
    if firstneg:
        temp += e
    if e < 0 and not firstneg:
        firstneg = True
print(res)

data = [12.89,14.54,-7.86,4.5,3.2,7.9,-11.2,10.1,22.96,-19.18,14.934,6.11]
 
i=0
while data[i]>=0:
    i+=1
j=-1
while data[j]>=0:
    j-=1
s=0    
for a in data[i+1:j]:
    s+=a
print(s)