Python Json模块中dumps、loads、dump、load函数介绍

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 import json

name_emb = {'a': '1111', 'b': '2222', 'c': '3333', 'd': '4444'}
#写的字典

jsDumps = json.dumps(name_emb)
#将字典转换成str

jsLoads = json.loads(jsDumps)
#将str 转换成字典

print(name_emb)
print(jsDumps)
print(jsLoads)

print(type(name_emb))
print(type(jsDumps))
print(type(jsLoads))


{'a': '1111', 'b': '2222', 'c': '3333', 'd': '4444'}
{"a": "1111", "b": "2222", "c": "3333", "d": "4444"}
{'a': '1111', 'b': '2222', 'c': '3333', 'd': '4444'}
<class 'dict'>
<class 'str'>
<class 'dict'>


print("=================================================")


emb_filename = ('emb_json.json')
# solution 1
jsObj = json.dumps(name_emb)
with open(emb_filename, "w") as f:
    f.write(jsObj)
    f.close()
# solution 2
json.dump(name_emb, open(emb_filename, "w"))

dump
#将字典 转换为str 并写入文件  {'a': '1111', 'b': '2222', 'c': '3333', 'd': '4444'}

jsObj = json.load(open(emb_filename))
print(jsObj)
print(type(jsObj))
for key in jsObj.keys():
    print('key: %s  value: %s' % (key, jsObj.get(key)))

{'a': '1111', 'b': '2222', 'c': '3333', 'd': '4444'}
<class 'dict'>
key: a value: 1111
key: b value: 2222
key: c value: 3333
key: d value: 4444

load 
读取文件中的str 并转换成字典