f=open(r'E:\A.txt','r')

boyA=[]

boyB=[]

count =

for each_line in f:

    if each_line[:]!='======':

        (role,line_spoken)=each_line.split(':',)

        print((role,line_spoken))

        if role == 'A':

            boyA.append(line_spoken)

        if role =='B':

            boyB.append(line_spoken)

    else:

        file_name_boyA = r'E:\boyA_'+str(count)+'.txt'

        file_name_boyB = r'E:\boyB_' + str(count) + '.txt'

        boyA_file = open(file_name_boyA,'w')

        boyB_file = open(file_name_boyB, 'w')

        boyA_file.writelines(boyA)

        boyB_file.writelines(boyB)

        boyA_file.close()

        boyB_file.close()

        boyA = []

        boyB = []

        count += 

file_name_boyA = r'E:\boyA_' + str(count) + '.txt'

file_name_boyB = r'E:\boyB_' + str(count) + '.txt'

boyA_file = open(file_name_boyA,'w')

boyB_file = open(file_name_boyB, 'w')

boyA_file.writelines(boyA)

boyB_file.writelines(boyB)

boyA_file.close()

boyB_file.close()

f.close()

#第二个函数

def save_file(boyA,boyB,count):

    file_name_boyA = r'E:\boyA_' + str(count) + '.txt'

    file_name_boyB = r'E:\boyB_' + str(count) + '.txt'

    boyA_file = open(file_name_boyA, 'w')

    boyB_file = open(file_name_boyB, 'w')

    boyA_file.writelines(boyA)

    boyB_file.writelines(boyB)

    boyA_file.close()

    boyB_file.close()

#第一个函数

def split_file(file_name):

    f=open(file_name,'r')

    boyA = []

    boyB = []

    count =

    for each_line in f:

        if each_line[:]!='======':

            (role,line_spoken)=each_line.split(':',)

            print((role,line_spoken))

            if role == 'A':

                boyA.append(line_spoken)

            if role =='B':

                boyB.append(line_spoken)

        else:

            save_file(boyA, boyB, count)

            boyA = []

            boyB = []

            count += 

    save_file(boyA,boyB,count)

    f.close()

# 调用

split_file(r'E:\A.txt')