I have a simple python program that should load a .json file into a variable and print the variable output to the screen. But it fails to run and errors with the following message:
"File "/Documents/VSCode/python-3-programming-specialization/Data Collection and Processing with Python (Course 3)/Lesson 1/assessment6.py", line 5, in <module>
res = json.load(json_file,)
File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 296, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 15 column 25 (char 506)"
In the JSON file there is an error too that I think is the problem but I don't know what values to set to clear the error in the JSON file. The error occurs anywhere you see a None, True or False value.
JSON error message: "Value expected json(516)
"statuses": [
{
"contributors": None,
"truncated": False,
"text": "RT #mikeweber25: I'm decommiting from the university of Michigan thank you Michigan for the love and support I'll remake my decision at the\u2026",
"in_reply_to_status_id": None,
"id": 536624519285583872,
"favorite_count": 0,
"source": "Twitter for iPhone",
"retweeted": False,
"coordinates": None,
import json
with open('./tweets.json') as json_file:
res = json.load(json_file)
print(res)
The expected output should be the file read in by the python program.
Related
I am trying to create an REST API and a part of the project requires working with JSON files.
I am trying to open a JSON file, to check whether certain content exists in the file. If it doesn't, it will be added. For that reason, I am trying to load the JSON file in order to use the dictionary methods. When I open the file and try to use the json.loads() function, I get an error. I am attaching the part of the code that doesn't work.
file = open(self.storage_file_name, 'r')
if file_is_empty:
content_to_write = json.dumps(self.states_population_json, indent=4)
file.write(content_to_write)
else:
current_date = str(date.today())
print(file.read())
json_content = json.loads(file.read()) # THIS IS WHERE THE ISSUE APPEARS <<<
if current_date in self.states_population_json["features"].keys():
pass
else:
json_content["features"][current_date] = self.states_population_json["features"][current_date]
Here's the error as well:
Traceback (most recent call last):
File "C:\Users\denis\AppData\Local\Programs\Python\Python39-32\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
I tried using json.load() instead of json.loads(), but then I get the following error:
Traceback (most recent call last):
File "C:\Users\denis\Desktop\Programming\ESRI_Internship\test_file.py", line 89, in <module>
data.save_data_json()
File "C:\Users\denis\Desktop\Programming\ESRI_Internship\test_file.py", line 79, in save_data_json
json_content = json.load(file)
File "C:\Users\denis\AppData\Local\Programs\Python\Python39-32\lib\json\__init__.py", line 293, in load
return loads(fp.read(),
File "C:\Users\denis\AppData\Local\Programs\Python\Python39-32\lib\json\__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\denis\AppData\Local\Programs\Python\Python39-32\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\denis\AppData\Local\Programs\Python\Python39-32\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Process finished with exit code 1
I made sure that the file isn't empty.
Thanks in advance!
EDIT:
Here is the content of the file (shortened a bit):
{
"features": {
"2022-01-06": [
{
"STATE_NAME": "Alabama",
"POPULATION": 5028316
},
{
"STATE_NAME": "North Carolina",
"POPULATION": 10736879
},
{
"STATE_NAME": "North Dakota",
"POPULATION": 321419
}
]
}
}
The line print(file.read()) moves the file cursor for reading to the end of the file (the command reads the whole file). A subsequent file.read() thus will not be able to read anything. Just remove the print statement, or if needed, move the file cursor back to the beginning of the file by executing file.seek(0) before the json.loads() statement.
Let say I have a simple dictionary as below:
a = {'animal' : 'fish', 'fruit' : 'apple','vehicle' : 'car'}
I wish to convert a into JSON and write to a file. If I used json.dumps() as below:
b = jason.dumps(a)
with open('output.json', 'w') as f:
f.write(pprint.pformat(b))
The content of the JSON file output.json became:
'{"animal": "fish", "fruit": "apple", "vehicle": "car"}'
What I wish to actually have (in the file) is without quote as below:
{"animal": "fish", "fruit": "apple", "vehicle": "car"}
What is the right way to code it so that I can get the desired output?
Thanks in advance.
[EDIT]: The reason why I need the desired output in file is because I received the error below when I loaded the file.
>>> with open("output.json") as f:
... data = json.load(f)
...
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
File "/Users/louis.kok/Analyses/devel/anaconda3/lib/python3.7/json/__init__.py", line 296, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "/Users/louis.kok/Analyses/devel/anaconda3/lib/python3.7/json/__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "/Users/louis.kok/Analyses/devel/anaconda3/lib/python3.7/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Users/louis.kok/Analyses/devel/anaconda3/lib/python3.7/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Import json library
import json
Save your file properly using json.dump
with open('output.json', 'w') as f:
json.dump(a, f)
Read it using json.load
with open("output.json") as f:
data = json.load(f)
Try this:
with open('task.json', 'w') as f:
s = json.dumps(mydict, indent=2)
f.write('%s\n' % (s))
I want to create a temporary JSON file to store the google calendar credentials, that were stored in a "job" object.
I am using the ServiceAccountCredentials to then get the credentials from the file.
Client = {
"clientID": job.getClientID(),
"clientSecret": job.getClientSecret()
}
temp = tempfile.NamedTemporaryFile(mode="w+b", suffix=".json")
complex_data = open(temp.name, "w", encoding="UTF-8")
complex_data.write(json.dumps(Client))
# data = complex_data.write(json.dumps(Client))
# z = json.loads(data)
credentials = ServiceAccountCredentials.from_json(
temp.name
)
```
I get the following error:
Traceback (most recent call last):
File "/var/www/library-offers-google-calendar/main.py", line 209, in <module>
temp.name
File "/var/www/library-offers-google-calendar/venv/lib/python3.7/site-packages/oauth2client/service_account.py", line 436, in from_json
json_data = json.loads(_helpers._from_bytes(json_data))
File "/usr/lib/python3.7/json/__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.7/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.7/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
From the docs, the method ServiceAccountCredentials.from_json accepts a json data rather than a json file name.
If you want to use a json file name, you need to use the method ServiceAccountCredentials.from_json_keyfile_name
Or else, you can directly use Client dictionary as a parameter to ServiceAccountCredentials.from_json without creating and reading from temporary file.
When you try to open a json file, this error comes out
Traceback (most recent call last):
File "C:\Users\vlad0\AppData\Roaming\Python\Python36\site-packages\discord\client.py", line 227, in _run_event
await coro(*args, **kwargs)
File "c:\Users\vlad0\Desktop\bot\bot.py", line 577, in on_message
info = json.load(open('servers/'+str(server)+'/reports/'+str(user["MaxRepID"])+'/info.json'))
File "C:\py36\lib\json\__init__.py", line 299, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "C:\py36\lib\json\__init__.py", line 354, in loads
return _default_decoder.decode(s)
File "C:\py36\lib\json\decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\py36\lib\json\decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 2 column 18 (char 19)
Here is the code that opens it (The path is correct)
info = json.load(open('servers/'+str(server)+'/reports/'+str(user["MaxRepID"])+'/info.json'))
json file
{
"Channel": "", /* ID */
"Created": "", /* Date */
"Author": "", /* who created */
"Is_closed": "False",
"Is_open": "False",
"Is_deleted": "False"
}
As you can see, double brackets are not skipped, but what is the error?
I don't think C-style comments are allowed in a JSON file (at least the Python JSON parser doesn't allow them), so try removing them.
Edit: As suggested by #Marcus in the comments, this question has some options for parsing a JSON file that has comments, including using packages such as jsmin, jstyleson, and jsoncomment, which are all on PyPI and installable via pip.
When I try to use app.current_request.json_body in chalice I get a decode error:
Traceback (most recent call last): File "/var/task/chalice/app.py",
line 659, in _get_view_function_response
response = view_function(**function_args) File "/var/task/app.py", line 34, in post_item
data = app.current_request.json_body File "/var/task/chalice/app.py", line 303, in json_body
self._json_body = json.loads(self.raw_body) File "/var/lang/lib/python3.6/json/init.py", line 354, in loads
return _default_decoder.decode(s) File "/var/lang/lib/python3.6/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/var/lang/lib/python3.6/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char
0)
It doesn't matter how simple the data is. Example: {"Company":"ABC"} or {}.
As can be seen in the following code in the API Gateway all I try to do is return the data that has been sent so I don't think this is the problem:
#app.route('/test', methods=['POST'], content_types=['application/json'], cors=cors_config)
def post_item(data):
data = app.current_request.json_body
return data
Does anyone know what I might have done wrong?
You must remove the data from the parameters of the function.
That is used for pass url parameters.
#app.route('/test', methods=['POST'], content_types=['application/json'], cors=cors_config)
def post_item():
data = app.current_request.json_body
return data