python-json?????????

Posted 2021-01-04

???????????????   with open   res   print   ????????????   highlight   ??????       python   

??????json??????????????????
1????????????????????????
2??????????????????????????????

json????????????????????????
dumps ,loads??????????????????
dump,load ??????????????????



json ????????????????????????????????? : json?????????????????? ???python??????????????? ??????java????????????????????????
????????????????????????????????????????????? : ????????? ?????? ?????? ??????
????????????key??????????????????

?????????????????????????????????

# ??????1  ???????????????????????????
# dic = {1 : ???value???,2 : ???value2???}
# ret = json.dumps(dic)  # ?????????
# print(dic,type(dic))
# print(ret,type(ret))
#
# res = json.loads(ret) # ????????????
# print(res,type(res))

# ??????2  ????????????????????????
# dic = {1 : [1,2,3],2 : (4,5,???aa???)}
# ret = json.dumps(dic)  # ?????????
# print(dic,type(dic))
# print(ret,type(ret))

# res = json.loads(ret) # ????????????
# print(res,type(res))

# ??????3
# s = {1,2,???aaa???}
# json.dumps(s)

# ??????4 # TypeError: keys must be a string   ??????key????????????????????????
# json.dumps({(1,2,3):123})

??????

??????dump?????????load???????????????????????????dump???load

# ??????5 ????????????????????? ???
# dic = {???key1??? : ???value1???,???key2??? : ???value2???}
# with open(???json_file???,???a???) as f:
#     json.dump(dic,f)
#     json.dump(dic,f)
#     json.dump(dic,f)

# with open(???json_file???,???r???) as f:
#     dic = json.load(f)
# print(dic.keys())

??????

?????????????????????????????????dumps???loads????????????????????????????????????????????????????????????????????????????????????

# ?????? :???????????????????????????????????????????????????,???????????????????????????
# dic = {???key1??? : ???value1???,???key2??? : ???value2???}
#
# with open(???json_file???,???a???) as f:
#     str_dic = json.dumps(dic)
#     f.write(str_dic+???
???)
#     str_dic = json.dumps(dic)
#     f.write(str_dic + ???
???)
#     str_dic = json.dumps(dic)
#     f.write(str_dic + ???
???)

# with open(???json_file???,???r???) as f:
#     for line in f:
#         dic = json.loads(line.strip())
#         print(dic.keys())

??????