详解python持久化文件读写

f=open('info.txt','a+')
f.seek(0)
str1=f.read()
if len(str1)==0:
  f1 = open('info.txt', 'w+')
  str1 = f.read()

time_list = ["早上", "中午", "晚上"]
character_list = ["小赵","小钱", "小孙", "小李"]
place_list = ["在屋里", "在外面", "在学校", "在公司"]
event_list = ["吃饭", "遛狗", "看书", "工作"]
dic1={'time_list':time_list,'character_list':character_list,'place_list':place_list,'event_list':event_list}
str1=str(dic1)
f1.write(str1)
f1.close()
print("文件保存成功")

else:
  dic1=eval(str1)
  print(type(dic1))
  print(dic1)
 
f=open('info.txt','a+')
f.seek(0)
str1=f.read()
if len(str1)==0:
f1 = open('info.txt', 'w+')
str1 = f.read()

time_list = ["早上", "中午", "晚上"]
character_list = ["小赵","小钱", "小孙", "小李"]
place_list = ["在屋里", "在外面", "在学校", "在公司"]
event_list = ["吃饭", "遛狗", "看书", "工作"]
dic1={'time_list':time_list,'character_list':character_list,'place_list':place_list,'event_list':event_list}
str1=str(dic1)
f1.write(str1)
f1.close()
print("文件保存成功")

else:
    dic1=eval(str1)
    print(type(dic1))
    print(dic1)