#输入输出
# input( )接受用户输入
str_1 = input("请输入:")
str_2 = input("请再输入:")
print('str_1 is '+ str_1+' str_2 is '+str_2)
print("str_1 is {} str_2 is {}".format(str_1,str_2))
#写出文件
some_sentences ='''
1234
5678
9876
5432
'''
f = open('sentences.txt','w')
f.write(some_sentences)
f.close()
#读入文件
f = open('sentences.txt','r') #写不写'r'结果一样
while True:
line = f.readline()
if len(line) == 0:
break
print(line)
f.close()