How to parse a JSON string with no root element?
I have a JSON file like below:
{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}
So basically the file contains a list of people.
I tried to use json.loads(str_content) in Python 3, but it returned the error of json.decoder.JSONDecodeError: Extra data:.
I checked with an online JSON parser (http://json.parser.online.fr) and it told me the same problem.
How to parse a JSON file without a root element but a list of JSON objects?
python json python-3.x
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
|
show 7 more comments
I have a JSON file like below:
{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}
So basically the file contains a list of people.
I tried to use json.loads(str_content) in Python 3, but it returned the error of json.decoder.JSONDecodeError: Extra data:.
I checked with an online JSON parser (http://json.parser.online.fr) and it told me the same problem.
How to parse a JSON file without a root element but a list of JSON objects?
python json python-3.x
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
There is a syntax error inage:20
– Srce Cde
Nov 22 '18 at 8:40
4
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
Is it stored in multi-line json? Like this{"name":"A","age":19} {"name":"B","age":20}Each in new line
– Srce Cde
Nov 22 '18 at 8:45
|
show 7 more comments
I have a JSON file like below:
{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}
So basically the file contains a list of people.
I tried to use json.loads(str_content) in Python 3, but it returned the error of json.decoder.JSONDecodeError: Extra data:.
I checked with an online JSON parser (http://json.parser.online.fr) and it told me the same problem.
How to parse a JSON file without a root element but a list of JSON objects?
python json python-3.x
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
I have a JSON file like below:
{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}
So basically the file contains a list of people.
I tried to use json.loads(str_content) in Python 3, but it returned the error of json.decoder.JSONDecodeError: Extra data:.
I checked with an online JSON parser (http://json.parser.online.fr) and it told me the same problem.
How to parse a JSON file without a root element but a list of JSON objects?
python json python-3.x
python json python-3.x
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
edited Nov 22 '18 at 8:42
mommomonthewind
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
asked Nov 22 '18 at 8:38
mommomonthewindmommomonthewind
73241328
73241328
There is a syntax error inage:20
– Srce Cde
Nov 22 '18 at 8:40
4
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
Is it stored in multi-line json? Like this{"name":"A","age":19} {"name":"B","age":20}Each in new line
– Srce Cde
Nov 22 '18 at 8:45
|
show 7 more comments
There is a syntax error inage:20
– Srce Cde
Nov 22 '18 at 8:40
4
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
Is it stored in multi-line json? Like this{"name":"A","age":19} {"name":"B","age":20}Each in new line
– Srce Cde
Nov 22 '18 at 8:45
There is a syntax error in
age:20– Srce Cde
Nov 22 '18 at 8:40
There is a syntax error in
age:20– Srce Cde
Nov 22 '18 at 8:40
4
4
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
Is it stored in multi-line json? Like this
{"name":"A","age":19} {"name":"B","age":20} Each in new line– Srce Cde
Nov 22 '18 at 8:45
Is it stored in multi-line json? Like this
{"name":"A","age":19} {"name":"B","age":20} Each in new line– Srce Cde
Nov 22 '18 at 8:45
|
show 7 more comments
1 Answer
1
active
oldest
votes
The issue is that the string you are trying to parse is not a valid JSON document. It is actually a concatenation of JSON documents. So the simple json.loads() will not work.
You can use instead something based on https://docs.python.org/3/library/json.html#json.JSONDecoder.raw_decode . E.g: (code is a bit ugly but the logic should be clear):
import json
s = """{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}"""
def iter_jsons(s):
decoder = json.JSONDecoder()
i = 0
while True:
doc, i2 = decoder.raw_decode(s[i:].strip())
yield doc
if i == i2:
break
i= i2
print(list(iter_jsons(s)))
[{'name': 'A', 'age': 19}, {'name': 'B', 'age': 20}]
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in{,}brackets or a comma delimited list of them enclosed in[,]brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.
– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
add a comment |
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1 Answer
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The issue is that the string you are trying to parse is not a valid JSON document. It is actually a concatenation of JSON documents. So the simple json.loads() will not work.
You can use instead something based on https://docs.python.org/3/library/json.html#json.JSONDecoder.raw_decode . E.g: (code is a bit ugly but the logic should be clear):
import json
s = """{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}"""
def iter_jsons(s):
decoder = json.JSONDecoder()
i = 0
while True:
doc, i2 = decoder.raw_decode(s[i:].strip())
yield doc
if i == i2:
break
i= i2
print(list(iter_jsons(s)))
[{'name': 'A', 'age': 19}, {'name': 'B', 'age': 20}]
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in{,}brackets or a comma delimited list of them enclosed in[,]brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.
– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
add a comment |
The issue is that the string you are trying to parse is not a valid JSON document. It is actually a concatenation of JSON documents. So the simple json.loads() will not work.
You can use instead something based on https://docs.python.org/3/library/json.html#json.JSONDecoder.raw_decode . E.g: (code is a bit ugly but the logic should be clear):
import json
s = """{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}"""
def iter_jsons(s):
decoder = json.JSONDecoder()
i = 0
while True:
doc, i2 = decoder.raw_decode(s[i:].strip())
yield doc
if i == i2:
break
i= i2
print(list(iter_jsons(s)))
[{'name': 'A', 'age': 19}, {'name': 'B', 'age': 20}]
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in{,}brackets or a comma delimited list of them enclosed in[,]brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.
– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
add a comment |
The issue is that the string you are trying to parse is not a valid JSON document. It is actually a concatenation of JSON documents. So the simple json.loads() will not work.
You can use instead something based on https://docs.python.org/3/library/json.html#json.JSONDecoder.raw_decode . E.g: (code is a bit ugly but the logic should be clear):
import json
s = """{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}"""
def iter_jsons(s):
decoder = json.JSONDecoder()
i = 0
while True:
doc, i2 = decoder.raw_decode(s[i:].strip())
yield doc
if i == i2:
break
i= i2
print(list(iter_jsons(s)))
[{'name': 'A', 'age': 19}, {'name': 'B', 'age': 20}]
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
The issue is that the string you are trying to parse is not a valid JSON document. It is actually a concatenation of JSON documents. So the simple json.loads() will not work.
You can use instead something based on https://docs.python.org/3/library/json.html#json.JSONDecoder.raw_decode . E.g: (code is a bit ugly but the logic should be clear):
import json
s = """{
"name":"A",
"age":19
}
{
"name":"B",
"age":20
}"""
def iter_jsons(s):
decoder = json.JSONDecoder()
i = 0
while True:
doc, i2 = decoder.raw_decode(s[i:].strip())
yield doc
if i == i2:
break
i= i2
print(list(iter_jsons(s)))
[{'name': 'A', 'age': 19}, {'name': 'B', 'age': 20}]
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
edited Nov 22 '18 at 10:14
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
answered Nov 22 '18 at 8:54
GuillaumeGuillaume
2,9731729
2,9731729
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in{,}brackets or a comma delimited list of them enclosed in[,]brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.
– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
add a comment |
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in{,}brackets or a comma delimited list of them enclosed in[,]brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.
– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
If there are no nested dicts you could simply look for the closing brace and parse up to that point.
– tripleee
Nov 22 '18 at 9:00
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
I can't find anything in the json standard that indicates that a JSON document must have a root element.
– Tomas Zubiri
Nov 22 '18 at 9:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
@TomasZubiri It is not explicitly stated as text in tools.ietf.org/html/rfc7159#section-2 , but the ABNF indicates that a JSON-text is a SINGLE value
– Guillaume
Nov 22 '18 at 10:08
1
1
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in
{, } brackets or a comma delimited list of them enclosed in [, ] brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.– martineau
Nov 22 '18 at 10:11
@TomasZubiri: I believe the standard indicates that a JSON document must either be a single JSON object enclosed in
{, } brackets or a comma delimited list of them enclosed in [, ] brackets. This answer looks like a very clever workaround allowing this non-compliant input to be decoded into the list it should have been in the first place.– martineau
Nov 22 '18 at 10:11
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
@tripleee: that is correct, but I'd rather not assume anything about the content I am trying to parse.
– Guillaume
Nov 22 '18 at 10:15
add a comment |
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There is a syntax error in
age:20– Srce Cde
Nov 22 '18 at 8:40
4
The problem is you don't have a JSON file; what's creating that file, could it be modified to have a single root array?
– jonrsharpe
Nov 22 '18 at 8:40
@Chirag thanks, I modified it.
– mommomonthewind
Nov 22 '18 at 8:42
@jonrsharpe I think the file is created from MongoDB. In fact I god a BSON file, then I converted it to JSON.
– mommomonthewind
Nov 22 '18 at 8:43
Is it stored in multi-line json? Like this
{"name":"A","age":19} {"name":"B","age":20}Each in new line– Srce Cde
Nov 22 '18 at 8:45