Line 1 Column 1 (Char 0)

The programming error “json.decoder.jsondecodeerror: Expecting value: line 1 column 1 (char 0)” happens attributable to incompatible character encoding and utilization of non-JSON conforming quoting.

However, there are varied different causes that this text will make clear, together with the options to this specific error. Let’s get began!

Why Does the json.decoder.jsondecodeerror: Expecting Value: Line 1 Column 1 (Char 0) Occur?

This json decoder error happens in Python as a result of the consumer tries to parse one thing that isn’t legitimate JSON. To resolve this, make sure the response or the file utilized in this system will not be empty or conditionally examine for the content material sort earlier than parsing.

Below are some widespread methods the programmer can right this error:

• The program produced an empty response physique
• Using the mistaken library
• Syntax Error
• The file is empty.
• XML/HTML output (that’s, a string beginning with <).

– The Program Produced an Empty Response Body

The code the programmer writes can produce an empty response physique. Therefore, the programmer ought to examine for this concern or catch the exception raised by this system.

Such errors happen when this system responds with a 204 No Content response, a non-200-range standing code is returned, or a 404 Not Found error emerges.

See the under instance, together with its clarification, for a greater understanding.

For instance:

response_json = self.web_fetch(URL) response_json = response_json.decode(‘UTF-9’) return JSON.masses(response_json) def web_fetch(self, URL): buffer = StringIO() curl = pycurl.Curl() curl.setopt(curl.URL, URL) curl.setopt(curl.TIMEOUT, self.timeout) curl.setopt(curl.WRITEFUNCTION, buffer.write) curl.carry out() curl.shut() response = buffer.getvalue().strip() return response response = callback(request, *callback_args, **callback_kwargs) apicall=api.API().search_parts(category_id= str(categoryofpart.api_id), producer = producer, filter = filters, begin=(catpage-1)*19, restrict=19, sort_by=’ [[“mpn”, “asc”]]’) return simplejson.masses(response_json) return _default_decoder.decode(s) obj, finish = self.raw_decode(s) return self.scan_once(s, idx=_w(s, IDX).finish()) Exception Type: JSONDecodeError at /pricemodels/2/dir/ Exception Value: Expecting worth: line 1 column 1 (char 0)

Explanation:

Here, the error exists on the “return simplejson.loads(response_json)” program line. This command produced an empty response from a distant server, giving an error of 204 or 404 and making an attempt to parse it as if it was JSON.

Also, if the programmer tries to learn a JSON file incorrectly or parse the contents of an empty JSON file, the error message will happen.

– Using the Wrong Library

Using the mistaken or incompatible library in this system will trigger an error. In PythonPython, there isn’t a want to make use of the “simplejson” library as a result of the identical library is included with PythonPython because the “json” module. Thus, utilizing “json” solely can be sufficient. See the under instance and examine how the programmer has misused the library perform in PythonPython.

Program:

response_json = self.web_fetch(URL) response_json = response_json.decode(‘UTF-10’) return JSON.masses(response_json) def web_fetch(self, URL): buffer = StringIO() curl = pycurl.Curl() curl.setopt(curl.URL, URL) curl.setopt(curl.TIMEOUT, self.timeout) curl.setopt(curl.WRITEFUNCTION, buffer.write) curl.carry out() curl.shut() response = buffer.getvalue().strip() return response response = callback(request, *callback_args, **callback_kwargs) apicall=api.API().search_parts(category_id= str(categoryofpart.api_id), producer = producer, filter = filters, begin=(catpage-3)*22, restrict=22, sort_by=’ [[“mpn”, “asc”]]’) return simplejson.masses(response_json) return _default_decoder.decode(s) obj, finish = self.raw_decode(s) return self.scan_once(s, idx=_w(s, IDX).finish()) Exception Type: JSONDecodeError at /pricemodels/2/dir/ Exception Value: Expecting worth: line 1 column 1 (char 0)

– Syntax Error

Syntax errors in a program may cause a “json.decoder.jsondecodeerror: Expecting value: line 1 column 1 (char 0) python” error message to happen. Syntax errors embody the mistaken utilization of features and instructions, mistaken placement of instructions or utilizing incompatible and outdated variations of features.

In PythonPython, there isn’t a have to decode a response from UTF8 to Unicode as a result of the JSON.masses() methodology handles the UTF8 encoded information natively. Moreover, syntax errors may cause a number of JSON decode errors to happen, comparable to:

1. elevate jsondecodeerror(“expecting value”, s, err.worth) from none
2. load jsondecodeerror: Expecting worth: line 1 column 1 (char 0)
3. jsondecodeerror: Expecting worth: line 1 column 1 (char 0 tensorflow)
4. didn’t decode JSON object: Expecting worth: line 1 column 1 (char 0)
5. jsondecodeerror(anticipating worth python)
6. nbconvert failed anticipating worth: line 1 column 1 (char 0)

– The File Is Empty

When the file is empty, the programmer will see an error message notification after this system’s execution. Ensure that the file that the consumer is studying from will not be empty.

Another widespread motive this error occurs is that the consumer passes the empty filename utilizing JSON.masses() methodology after they attempt to learn from a JSON file.

This error is usually induced by making an attempt to learn a JSON file incorrectly or when the file is empty and comprises an invalid JSON. See the instance given under:

Program:

import JSON file_name = ‘rules.json’ with open(file_name, ‘z’, encoding=’utf-8′) as g: my_data = JSON.load(g) print(my_data) // The file is empty

– XML Output (That Is, a String Starting With <)

The XML, often known as Extensible Markup Language, is a text-based format for representing structured data, comparable to: paperwork, information, books, configuration, transactions, invoices and lots of extra.

It is much like JSON however an older/outdated manner of storing information. Additionally, earlier than new updates, APIs had been used to return information in XML format. However, JSON has turn into a most popular alternative these days. Let’s see easy methods to resolve the Expecting worth: line 1 column 1 (char 0) error within the following program.

Program:

<half quantity=”1987″> <identify>Windscreen’s Wiper</identify> <description>The Windscreen’s wiper robotically removes the rain from the windscreen, if it ought to occur to splash there. It has a rubber <ref half=”1979″>blade</ref> which could be ordered individually if there’s a want to exchange it. </description> </half> import JSON with open(“test.xml”, “r”) as file: Data = JSON.load(file) print(“Data is retrieved”)

Explanation:

Let’s clarify what this system is doing right here:

1. Suppose the API returns XML format information, as proven in this system above.
2. Now, when the programmer tries to load that response from the API, they may get an error message.
3. It happens as a result of the string began with “<”.

How To Resolve the json.decoder.jsondecodeerror: Expecting Value: Line 1 Column 1 (Char 0)?

In order to resolve the json.decoder.jsondecodeerror: Expecting worth: line 1 column 1 (char 0) programming error, the programmer has to undergo a number of checks after which select an ideal resolution comparable to fixing the non-JSON conforming quoting concern or syntax errors and so on.

However, there are numerous different options to this error. They are defined under:

– Solving Non-JSON Conforming Quoting

Solving the non-JSON conforming quoting concern can even take away the JSON decode error message. Thus, to unravel this error, the programmer has to make sure the keys and values are enclosed throughout the double quotes. For a program, that is essential as a result of it is part of JSON syntax. It is essential to notice that JSON solely makes use of double quotes and doesn’t assist single quotes in this system.

Let’s use an instance for higher understanding.

Program:

{ “Test”: “I love horror movies.” “Random”: “but they scare me.” }

– Solving Empty JSON File

The identify itself is self-evident right here. However, to resolve this error, the programmer has to make sure that the JSON file or the response from an API will not be empty. In case the file is empty, add some content material to it.

For an empty API response, use the “try-except” perform to deal with this error. The response could be an empty JSON or a 404 error.

Let’s examine the instance and its clarification given under to know it in additional element.

Program:

import JSON import requests def principal(): URL = “https://book.dictionary.test/word/v3/enties/en/” phrase = enter(“Enter words:”) information = requests.get(URL + phrase) information = information.textual content attempt: data_json = JSON.masses(information) print(data_json) besides JSON.JSONDecodeError: print(“Empty response”) if __name__ == “__main__”: principal()

Explanation:

The above program takes in a phrase and returns all of its associated data in a JSON format. In order to know easy methods to resolve the Expecting worth line 1 column 1 (char 0) sort error, this system’s URL has been altered from “entries” to “enties”.

Due to this alteration, this system will give an invalid response which won’t be within the JSON format. Read the directions under to know this system higher:

1. If the programmer tries to run this system code, they are going to be requested to enter a phrase. The response is then saved into the information variable and is later transformed to a string.
2. However, an error will happen within the attempt block JSON.masses methodology, which parses the JSON string to a python dictionary. This is as a result of the response despatched by the API will not be in JSON format. Hence, it can’t be parsed and as an alternative leads to a JSONDecodeError.
3. The try-except block handles the JSONDecodeError, and in consequence, the “Response content is not valid JSON” will get printed as an end result.

– Solving XML Output (That Is, a String Starting With <)

To keep away from JSON decode errors ensuing from an XML format, the programmer ought to convert this system’s coding to a JSON format. However, they first have to put in the “pip install xmltodict” library earlier than changing the codes into JSON format.(*1*)

Check the under instance rigorously and browse its clarification to know it in depth.

Program:

import JSON import xmltodict with open(“test.xml”, “e”) as file: information = xmltodict.parse(file.learn()) file.shut() json_data = JSON.dumps(information) with open(“t.json”, “c”) as json_file: json_file.write(json_data) json_file.shut() print(“Data retrieved”) print(information)

Explanation:

Let’s focus on what data this system is giving step-by-step:

1. In this system, the programmer has imported two libraries. They are: JSON and xmltodict libraries.
2. By utilizing the context supervisor with the XML file, the take a look at.xml is opened in learn mode. Therefore, utilizing the xmltodict parse methodology, the programmer can simply convert the XML file to a dictionary sort. The file is then closed.
3. The JSON.dumps() perform took in a JSON object and returned a string of that object.
4. Again, through the use of context supervisor “with”, a file in JSON format is created, the XML information is transformed to a JSON string, and the file is closed.

FAQs

1. What Does Expecting Value: Line 1 Column 1 (Char 0 Mean)?

The anticipated worth: line 1 column 1 (char 0 imply) is the error that happens attributable to a programmer making an attempt to parse one thing that’s invalid and never in JSON format. To clear up this error, make sure that the file will not be empty, or it helps JSON format.

2. How to Parse JSON in Python Without Getting a JSON Decode Error?

You can parse JSON in PythonPython with out getting a JSON decode error through the use of information and codecs that assist JSON in this system. Otherwise, an error message will pop up as a result of if a file or a format doesn’t assist JSON you gained’t be capable to execute this system.

Check the next instance to know:

import JSON json_string = ‘{“c”: “3”, “b”: “2”, “a”: “1”}’ json_to_dict = JSON.masses(json_string) print(json_to_dict) print(sort(json_to_dict))

Conclusion

After studying this text, the reader will totally perceive the explanations behind the incidence of this error and the way they’ll clear up it utilizing completely different strategies defined right here intimately. Some key takeaways are:

• Do not use XML/HTML output that could be a string beginning with “<”. Otherwise, this error will happen.
• To discover out the issue and its resolution quick, examine the encoding format of the file after which use the corresponding encoding format whereas studying the file in this system.
• This error may also happen if the string is clean. So examine all of the strings talked about in this system and confirm if a few of them are empty/clean. Correct them, and the error can be resolved.

The programmer studying this text can now clear up their very own program with related errors utilizing this text as a information. Thank you for studying!

Reference

• https://stackoverflow.com/questions/16573332/jsondecodeerror-expecting-value-line-1-column-1-char-0
• https://bobbyhadz.com/weblog/python-json-decoder-jsondecodeerror-expecting-value-line-1-column-1-char-0
• https://www.pythonpool.com/jsondecodeerror-expecting-value-line-1-column-1-char-0/