英文:
Python's json.dump() output seems not relevant
问题
我希望你一切都好。最近，我决定稍微玩一下JSON文件，但遇到了问题。
我不确定是否犯了某种重大错误，但每当我尝试将字典/字符串变量转换为.json文件时，输出看起来并不像我习惯的那样。
以下是代码：
dictio = """{
"Forms": [
{
"Forms_2D": [
{
"Line": ["test", 0],
"Square": ["test", 0],
"Triangle": ["test", 0],
"Circle": ["test", 0],
"Rectangle": ["test", 0],
"Parallelogram": ["test", 0],
"Rhombus": ["test", 0],
"Trapezoid": ["test", 0],
"Hexagon": ["test", 0],
"Octagon": ["test", 0]
}
],
"Forms_3D": [
{
"Cube": ["test", 0],
"Pyramid": ["test", 0],
"Cone": ["test", 0],
"Cylinder": ["test", 0],
"Sphere": ["test", 0],
"Ball": ["test", 0],
"Cuboid": ["test", 0]
}
]
}
],
"Calculations": [
{
"Irrational": ["test", 0],
"Not_a_Number": ["test", 0]
}
]
}"""
with open("info.json", "w") as file:
json.dump(dictio, file, indent=4, separators=(",", ":"))
file.close()
上面代码的输出如下：
{
"Forms": [
{
"Forms_2D": [
{
"Line": ["test", 0],
"Square": ["test", 0],
"Triangle": ["test", 0],
"Circle": ["test", 0],
"Rectangle": ["test", 0],
"Parallelogram": ["test", 0],
"Rhombus": ["test", 0],
"Trapezoid": ["test", 0],
"Hexagon": ["test", 0],
"Octagon": ["test", 0]
}
],
"Forms_3D": [
{
"Cube": ["test", 0],
"Pyramid": ["test", 0],
"Cone": ["test", 0],
"Cylinder": ["test", 0],
"Sphere": ["test", 0],
"Ball": ["test", 0],
"Cuboid": ["test", 0]
}
]
}
],
"Calculations": [
{
"Irrational": ["test", 0],
"Not_a_Number": ["test", 0]
}
]
}
我认为问题与输入文件有关，所以我尝试了很多版本，其中包括制表符或"\n"，但都没有成功 - 输出仅在一行中的键和数组之间添加了额外的"\t"和"\n"值。
另一方面，我尝试使用json.loads然后将其添加到json.dump中，如下所示：
x = json.loads(dictio)
with open("info.json", "w") as file:
json.dump(x, file, indent=4, separators=(",", ":"))
file.close()
但是它再次失败，提示我有一个与','分隔符有关的问题：
json.decoder.JSONDecodeError: 在第1行第42列（字符41）处期望','分隔符
请帮助我解决这个问题：-）
最好的问候，
stackoverflow用户
英文:
I hope you're doing fine.
Recently I decided to tinker a little with JSON files, but was struck by problem.
I am not sure if I make some kind of a cardinal mistake, but whenever I try to convert
a dictionary/string variable to .json file, the output does not really look similar to
what I'm used to.
Here's the code:
dictio = """{"Forms": [{"Forms_2D": [{"Line": ["test": 0 ],"Square": ["test": 0 ],"Triangle": ["test": 0 ],"Circle": ["test": 0],"Rectangle": ["test": 0],"Parallelogram": ["test": 0],"Rhombus": ["test": 0],"Trapezoid": ["test": 0],"Hexagon": ["test": 0],"Octagon": ["test": 0],}],"Forms_3D": [{"Cube": ["test": 0],"Pyramid": ["test": 0],"Cone": ["test": 0],"Cylinder": ["test": 0],"Sphere": ["test": 0],"Ball": ["test": 0],"Cuboid": ["test": 0]}]}],"Calculations": [{"Irrational": ["test": 0],"Not_a_Number": ["test": 0]}]}"""
with open("info.json", "w") as file:
json.dump(dictio,file,indent=4,separators=(',', ': '))
file.close()
The Output of the code above seems like this:
"{\"Forms\": [{\"Forms_2D\": [{\"Line\": [\"test\": 0 ],\"Square\": [\"test\": 0 ],\"Triangle\": [\"test\": 0 ],\"Circle\": [\"test\": 0],\"Rectangle\": [\"test\": 0],\"Parallelogram\": [\"test\": 0],\"Rhombus\": [\"test\": 0],\"Trapezoid\": [\"test\": 0],\"Hexagon\": [\"test\": 0],\"Octagon\": [\"test\": 0],}],\"Forms_3D\": [{\"Cube\": [\"test\": 0],\"Pyramid\": [\"test\": 0],\"Cone\": [\"test\": 0],\"Cylinder\": [\"test\": 0],\"Sphere\": [\"test\": 0],\"Ball\": [\"test\": 0],\"Cuboid\": [\"test\": 0]}]}],\"Calculations\": [{\"Irrational\": [\"test\": 0],\"Not_a_Number\": [\"test\": 0]}]}"
I thought the problem was related to the input file, so I made many
versions with either tabulations or "\n", but with no luck - the output was only altered
with additional "\t" and "\n" values between the keys and arrays within one line.
On another hand I tried to use json.loads and than add it to json.dump like this:
x = json.loads(dictio)
with open("info.json", "w") as file:
json.dump(x,file,indent=4,separators=(',', ': '))
file.close()
But than again it fails instructing me that there is a problem with ',' delimiter:
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 1 column 42 (char 41)
Please help me out 
Best Regards,
stackoverflow-User
答案1
得分: 1
json.dump接受一个真正的字典作为参数。你正在传递一个JSON字符串。
英文:
json.dump takes a real dictionary as an argument. You are passing a JSON string.
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