Python文件分解问题

def save_file(boy,girl,count):

file_name_boy='boy_'+str(count)+'.txt'

file_name_girl='girl_'+str(count)+'.txt'

boy_file=open(file_name_boy,'w')

girl_file=open(file_name_girl,'w')

boy_file.writelines(boy)

girl_file.writelines(girl)

boy_file.close()

girl_file.close()

def split_file(file_name):

f=open('record.txt')

boy=[]

girl=[]

count=1

for each_line in f:

if each_line[:6]!='=======':

(role,line_spoken)=each_line.split(':',1)

if role=='买家':

boy.append(line_spoken)

if role=='小客服':

girl.append(line_spoken)

else:

save_file(boy,girl,count)

boy=[]

girl=[]

count +=1

save_file(boy,girl,count)

f.close()

split_file('record.txt')

运行时显示not enough values to unpack(expceted 2, got 1)

不知道怎么解决了