“Expecting property name enclosed in double quotes” in json file
Here is the json file
{"pre_trigger": 4, "sampling frequency": 1652, "record length": 15.0,
"sensors":
[{"model": "393B05", "serial": "46978", "sensitivity": 10030, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [7.01, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 next to bookshelf", "channel": "cDAQ1Mod2/ai0"}],
[{"model": "393B05", "serial": "47085", "sensitivity": 9980, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [9.65, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 under the whiteboard", "channel": "cDAQ1Mod2/ai1"}]
"parameters": {"general": , "specific": ["Walking direction", "Person ID"]}}
I'm not one to understand coding so I don't know where this error truly is coming from. I'm running a command the following commands
daq = DAQ()
daq.load_setup('json.fname')
Which returns the property error. There are no single quotes in the json file, so I truly don't know where the problem is. Below is where the error calls back to.
def load_setup(self,fname='setup.json'):
"""
Opens the JSON file containing the setup parameters for the experiment.
Parameters
----------
fname : str
File that the parameters for the experiment were saved into (JSON file)
"""
import json
with open(fname, 'r') as setup_file:
setup_data = json.load(setup_file)
self.fs = setup_data['sampling frequency']
self.record_length = setup_data['record length']
self.sensors = setup_data['sensors']
self.parameters = setup_data['parameters']
self.pre_trigger = setup_data['pre_trigger']
python json quotes
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
add a comment |
Here is the json file
{"pre_trigger": 4, "sampling frequency": 1652, "record length": 15.0,
"sensors":
[{"model": "393B05", "serial": "46978", "sensitivity": 10030, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [7.01, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 next to bookshelf", "channel": "cDAQ1Mod2/ai0"}],
[{"model": "393B05", "serial": "47085", "sensitivity": 9980, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [9.65, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 under the whiteboard", "channel": "cDAQ1Mod2/ai1"}]
"parameters": {"general": , "specific": ["Walking direction", "Person ID"]}}
I'm not one to understand coding so I don't know where this error truly is coming from. I'm running a command the following commands
daq = DAQ()
daq.load_setup('json.fname')
Which returns the property error. There are no single quotes in the json file, so I truly don't know where the problem is. Below is where the error calls back to.
def load_setup(self,fname='setup.json'):
"""
Opens the JSON file containing the setup parameters for the experiment.
Parameters
----------
fname : str
File that the parameters for the experiment were saved into (JSON file)
"""
import json
with open(fname, 'r') as setup_file:
setup_data = json.load(setup_file)
self.fs = setup_data['sampling frequency']
self.record_length = setup_data['record length']
self.sensors = setup_data['sensors']
self.parameters = setup_data['parameters']
self.pre_trigger = setup_data['pre_trigger']
python json quotes
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes withexec()the passed string.
– Iulian
Nov 21 '18 at 16:44
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52
add a comment |
Here is the json file
{"pre_trigger": 4, "sampling frequency": 1652, "record length": 15.0,
"sensors":
[{"model": "393B05", "serial": "46978", "sensitivity": 10030, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [7.01, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 next to bookshelf", "channel": "cDAQ1Mod2/ai0"}],
[{"model": "393B05", "serial": "47085", "sensitivity": 9980, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [9.65, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 under the whiteboard", "channel": "cDAQ1Mod2/ai1"}]
"parameters": {"general": , "specific": ["Walking direction", "Person ID"]}}
I'm not one to understand coding so I don't know where this error truly is coming from. I'm running a command the following commands
daq = DAQ()
daq.load_setup('json.fname')
Which returns the property error. There are no single quotes in the json file, so I truly don't know where the problem is. Below is where the error calls back to.
def load_setup(self,fname='setup.json'):
"""
Opens the JSON file containing the setup parameters for the experiment.
Parameters
----------
fname : str
File that the parameters for the experiment were saved into (JSON file)
"""
import json
with open(fname, 'r') as setup_file:
setup_data = json.load(setup_file)
self.fs = setup_data['sampling frequency']
self.record_length = setup_data['record length']
self.sensors = setup_data['sensors']
self.parameters = setup_data['parameters']
self.pre_trigger = setup_data['pre_trigger']
python json quotes
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
Here is the json file
{"pre_trigger": 4, "sampling frequency": 1652, "record length": 15.0,
"sensors":
[{"model": "393B05", "serial": "46978", "sensitivity": 10030, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [7.01, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 next to bookshelf", "channel": "cDAQ1Mod2/ai0"}],
[{"model": "393B05", "serial": "47085", "sensitivity": 9980, "sensitivity_units": "mV/g", "sensor_type": "Accelerometer", "units": "g", "location": [9.65, -0.19, 0], "location_units": "m", "direction": [0, 0, 1], "trigger": true, "trigger_value": 0.005, "max_val": 0.45, "min_val": -0.45, "comments": "Inside B122 under the whiteboard", "channel": "cDAQ1Mod2/ai1"}]
"parameters": {"general": , "specific": ["Walking direction", "Person ID"]}}
I'm not one to understand coding so I don't know where this error truly is coming from. I'm running a command the following commands
daq = DAQ()
daq.load_setup('json.fname')
Which returns the property error. There are no single quotes in the json file, so I truly don't know where the problem is. Below is where the error calls back to.
def load_setup(self,fname='setup.json'):
"""
Opens the JSON file containing the setup parameters for the experiment.
Parameters
----------
fname : str
File that the parameters for the experiment were saved into (JSON file)
"""
import json
with open(fname, 'r') as setup_file:
setup_data = json.load(setup_file)
self.fs = setup_data['sampling frequency']
self.record_length = setup_data['record length']
self.sensors = setup_data['sensors']
self.parameters = setup_data['parameters']
self.pre_trigger = setup_data['pre_trigger']
python json quotes
python json quotes
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
edited Nov 21 '18 at 16:53
newtothis
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
asked Nov 21 '18 at 16:17
newtothisnewtothis
186
186
There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes withexec()the passed string.
– Iulian
Nov 21 '18 at 16:44
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52
add a comment |
There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes withexec()the passed string.
– Iulian
Nov 21 '18 at 16:44
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52
There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes with
exec() the passed string.– Iulian
Nov 21 '18 at 16:44
There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes with
exec() the passed string.– Iulian
Nov 21 '18 at 16:44
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52
add a comment |
1 Answer
1
active
oldest
votes
You simply do not have valid JSON (there isn't anything wrong with your Python code). You're not using the array functionality correctly. A JSON array looks like this:
{"some_array": ["first item", "second item", ..., "last item"]}
it does not look like this (which is what you had and why you get the error you're getting):
{"some_array": ["first item"], ["second item"], ..., ["last item"]}
Long story short, your list items are comma delimted inside the square brackets. Here's what your JSON should look like (sensor array fixed, and pretty-printed):
{
"pre_trigger": 4,
"sampling frequency": 1652,
"record length": 15.0,
"sensors":
[
{
"model": "393B05",
"serial": "46978",
"sensitivity": 10030,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [7.01, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 next to bookshelf",
"channel": "cDAQ1Mod2/ai0"
},
{
"model": "393B05",
"serial": "47085",
"sensitivity": 9980,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [9.65, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 under the whiteboard",
"channel": "cDAQ1Mod2/ai1"
}
],
"parameters": {
"general": ,
"specific":
[
"Walking direction",
"Person ID"
]
}
}
I recommend always keeping your JSON pretty-printed (even on disk), as it makes it easier to read/understand. Part of the appeal of the JSON format is that you can easily eyeball it as a human.
The rest of your code that you posted worked fine after this fix.
HTH.
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You simply do not have valid JSON (there isn't anything wrong with your Python code). You're not using the array functionality correctly. A JSON array looks like this:
{"some_array": ["first item", "second item", ..., "last item"]}
it does not look like this (which is what you had and why you get the error you're getting):
{"some_array": ["first item"], ["second item"], ..., ["last item"]}
Long story short, your list items are comma delimted inside the square brackets. Here's what your JSON should look like (sensor array fixed, and pretty-printed):
{
"pre_trigger": 4,
"sampling frequency": 1652,
"record length": 15.0,
"sensors":
[
{
"model": "393B05",
"serial": "46978",
"sensitivity": 10030,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [7.01, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 next to bookshelf",
"channel": "cDAQ1Mod2/ai0"
},
{
"model": "393B05",
"serial": "47085",
"sensitivity": 9980,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [9.65, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 under the whiteboard",
"channel": "cDAQ1Mod2/ai1"
}
],
"parameters": {
"general": ,
"specific":
[
"Walking direction",
"Person ID"
]
}
}
I recommend always keeping your JSON pretty-printed (even on disk), as it makes it easier to read/understand. Part of the appeal of the JSON format is that you can easily eyeball it as a human.
The rest of your code that you posted worked fine after this fix.
HTH.
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
add a comment |
You simply do not have valid JSON (there isn't anything wrong with your Python code). You're not using the array functionality correctly. A JSON array looks like this:
{"some_array": ["first item", "second item", ..., "last item"]}
it does not look like this (which is what you had and why you get the error you're getting):
{"some_array": ["first item"], ["second item"], ..., ["last item"]}
Long story short, your list items are comma delimted inside the square brackets. Here's what your JSON should look like (sensor array fixed, and pretty-printed):
{
"pre_trigger": 4,
"sampling frequency": 1652,
"record length": 15.0,
"sensors":
[
{
"model": "393B05",
"serial": "46978",
"sensitivity": 10030,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [7.01, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 next to bookshelf",
"channel": "cDAQ1Mod2/ai0"
},
{
"model": "393B05",
"serial": "47085",
"sensitivity": 9980,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [9.65, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 under the whiteboard",
"channel": "cDAQ1Mod2/ai1"
}
],
"parameters": {
"general": ,
"specific":
[
"Walking direction",
"Person ID"
]
}
}
I recommend always keeping your JSON pretty-printed (even on disk), as it makes it easier to read/understand. Part of the appeal of the JSON format is that you can easily eyeball it as a human.
The rest of your code that you posted worked fine after this fix.
HTH.
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
add a comment |
You simply do not have valid JSON (there isn't anything wrong with your Python code). You're not using the array functionality correctly. A JSON array looks like this:
{"some_array": ["first item", "second item", ..., "last item"]}
it does not look like this (which is what you had and why you get the error you're getting):
{"some_array": ["first item"], ["second item"], ..., ["last item"]}
Long story short, your list items are comma delimted inside the square brackets. Here's what your JSON should look like (sensor array fixed, and pretty-printed):
{
"pre_trigger": 4,
"sampling frequency": 1652,
"record length": 15.0,
"sensors":
[
{
"model": "393B05",
"serial": "46978",
"sensitivity": 10030,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [7.01, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 next to bookshelf",
"channel": "cDAQ1Mod2/ai0"
},
{
"model": "393B05",
"serial": "47085",
"sensitivity": 9980,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [9.65, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 under the whiteboard",
"channel": "cDAQ1Mod2/ai1"
}
],
"parameters": {
"general": ,
"specific":
[
"Walking direction",
"Person ID"
]
}
}
I recommend always keeping your JSON pretty-printed (even on disk), as it makes it easier to read/understand. Part of the appeal of the JSON format is that you can easily eyeball it as a human.
The rest of your code that you posted worked fine after this fix.
HTH.
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
You simply do not have valid JSON (there isn't anything wrong with your Python code). You're not using the array functionality correctly. A JSON array looks like this:
{"some_array": ["first item", "second item", ..., "last item"]}
it does not look like this (which is what you had and why you get the error you're getting):
{"some_array": ["first item"], ["second item"], ..., ["last item"]}
Long story short, your list items are comma delimted inside the square brackets. Here's what your JSON should look like (sensor array fixed, and pretty-printed):
{
"pre_trigger": 4,
"sampling frequency": 1652,
"record length": 15.0,
"sensors":
[
{
"model": "393B05",
"serial": "46978",
"sensitivity": 10030,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [7.01, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 next to bookshelf",
"channel": "cDAQ1Mod2/ai0"
},
{
"model": "393B05",
"serial": "47085",
"sensitivity": 9980,
"sensitivity_units": "mV/g",
"sensor_type": "Accelerometer",
"units": "g",
"location": [9.65, -0.19, 0],
"location_units": "m",
"direction": [0, 0, 1],
"trigger": true,
"trigger_value": 0.005,
"max_val": 0.45,
"min_val": -0.45,
"comments": "Inside B122 under the whiteboard",
"channel": "cDAQ1Mod2/ai1"
}
],
"parameters": {
"general": ,
"specific":
[
"Walking direction",
"Person ID"
]
}
}
I recommend always keeping your JSON pretty-printed (even on disk), as it makes it easier to read/understand. Part of the appeal of the JSON format is that you can easily eyeball it as a human.
The rest of your code that you posted worked fine after this fix.
HTH.
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
answered Nov 21 '18 at 17:46
Matt MessersmithMatt Messersmith
6,30921932
6,30921932
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
add a comment |
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
Sorry for the late reply, but this worked! Thank you so much.
– newtothis
Nov 28 '18 at 1:37
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
@newtothis Glad to have helped! If it's the right answer, you can also accept it (checkmark next to where you've upvoted).
– Matt Messersmith
Nov 28 '18 at 1:39
add a comment |
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There aren't sufficient information so we can try your code case and understand problem. Can you add more codes, like that of the class and explain better what you are trying of achieving with the two lines. However let me try guessing, I think you are accessing a property that there isn't on json object if you function executes with
exec()the passed string.– Iulian
Nov 21 '18 at 16:44
Yes I will try. I'll add where the error calls back to above.
– newtothis
Nov 21 '18 at 16:52