如何打印一整行的内容(语言-python)

fn='./jiyi.txt'
with open(fn) as filobj:
objlist=filobj.readlines()
strobj=' '
for line in objlist:
strobj+=line.rstrip()
wo=input()
index=strobj.find(wo)
if index>=0:
print(strobj[index+1])
如何打印wo所在行数的下一行
刚接触Python，请尽量用简单的方式表达提前谢谢

fn = './jiyi.txt'

with open(fn) as filobj:
    objlist=filobj.readlines()
    
strobj=' '
for line in objlist:
    strobj += line.rstrip()
    
wo = input()

for index, line in enumerate(objlist):
    if wo in line:
        break

if index<len(objlist)-1:
    print(objlist[index+1])
else:
    print('已是最后一行，没有后一行了')