自己写的20讲最后一题作业

Mzzith

str1 = '''那个文本放进去'''
list1 = list(str1)
list1.append('a')
list2 = []
lenth = len(list1)
for i in range(0,lenth-5):
    n = str(list1[i])
    a1 = str(str1[i-1])
    a2 = str(str1[i-2])
    a3 = str(str1[i-3])
    a4 = str(str1[i+1])
    a5 = str(str1[i+2])
    a6 = str(str1[i+3])
    a7 = str(str1[i+4])
    a8 = str(str1[i-4])
    if n.islower():
        if a1.isupper() and a2.isupper() and a3.isupper() and a4.isupper() and a5.isupper() and a6.isupper() and a7.islower() and a8.islower():
            list2.append(list1[i])
frist = ''
for j in list2:
    frist = frist + j
print(frist)