python f string example json

Using python f-string in a json list of data

stackoverflow.com › questions › 64761547 › using-python-f-string-in-a-json-list-of-data

I would personally do something like this:

import json
import datetime

today = datetime.date.today()
tomorrow = today + datetime.timedelta(days = 1)

data = [{
    "date": str(tomorrow),
    "price": {
        "amount": 15100
    }
}]

print(json.dumps(data))

Of course, after this, you can do anything you want with json.dumps(data): in your case, send it in a request.

Answer from BrownieInMotion on Stack Overflow

Stack Overflow

stackoverflow.com › questions › 64761547 › using-python-f-string-in-a-json-list-of-data

Using python f-string in a json list of data - Stack Overflow

Top answer

1 of 1

I would personally do something like this:

import json
import datetime

today = datetime.date.today()
tomorrow = today + datetime.timedelta(days = 1)

data = [{
    "date": str(tomorrow),
    "price": {
        "amount": 15100
    }
}]

print(json.dumps(data))

Of course, after this, you can do anything you want with json.dumps(data): in your case, send it in a request.

Storing string into json object python

python string to list (in string and json)

python - From string to fstring

String to Json Python

python - How to use f-strings in a premade string?

More results from stackoverflow.com

reddit.com › r/learnpython › json, strings, and f-strings

r/learnpython on Reddit: Json, strings, and f-strings

March 24, 2022 -

I'm stumped on how to fix this.

import json
import os

awx_base_url = "https://127.0.0.1”
inventory_name = "VCenter - POC”

build_number = 15
deploy_frontend = 'true'


to_deploy_dict = [

    {
        "name": " TEST”,
        "cmd": f"awx job_templates launch --inventory '{inventory_name}' --extra_vars '{{ build_number: {build_number}, deploy_frontend: {deploy_frontend} }}' 14",
     },
]

for item in to_deploy_dict:

    print("Executing: " + item["cmd"])
    if "workflow" in item["cmd"]:
          jobid = json.loads(os.popen(item["cmd"]).read())["id"]

The cli returns this error: {'variables_needed_to_start': ["Value True for 'deploy_frontend' expected to be one of ['true', 'false']."]}

Bypassing my script and using the cli directly, this command is successful.

 awx job_templates launch --inventory 'VCenter - POC' --extra_vars build_number: 15, deploy_frontend: 'true', 15

What is getting lost in translation here?

Top answer

1 of 1

What does the print line actually output

Stack Overflow

stackoverflow.com › questions › 72616605 › python-parsing-json-and-f-string

Python - parsing JSON and f string - Stack Overflow

Top answer

1 of 1

You can put extra{ and } to your string:

import json

test = 10
json_data = f'[{{"ID": {test},"Name":"Pankaj","Role":"CEO"}}]'

json_object = json.loads(json_data)
json_formatted_str = json.dumps(json_object, indent=2)
print(json_formatted_str)

Prints:

[
  {
    "ID": 10,
    "Name": "Pankaj",
    "Role": "CEO"
  }
]

Mimo

mimo.org › glossary › python › formatted-strings

Python Formatted Strings / f-string formatting Guide

f-strings also support JSON-friendly representations using repr, which ensures that objects are formatted in a readable string form. ... f-strings can include more than variables and values. They can include expressions, function calls, and even conditional logic: ... Python's so-called format mini-language provides advanced control over string formatting.

ReqBin

reqbin.com › code › python › trs5wpc0 › python-f-string-example

How to format string with f-string in Python?

July 27, 2023 - To print the variable value in ... be replaced by their values. In this Python F-String example, we are formatting a string using several variables....

Stack Overflow

stackoverflow.com › questions › 74114097 › using-variable-f-string-stored-in-json

python - using variable (f)-string stored in json - Stack Overflow

Top answer

1 of 2

you should use string.format() instead of f-strings

Still if you want to use f-strings then you should use eval like this, its unsafe

DAY="1"
MONTH="12"
df = pd.DataFrame(
    [{
    "path":"home/data/month={MONTH}/day={DAY}"
 },
 {
    "path":"home/data/month={MONTH}/day={DAY}"
 }
]
)
a = df['path'][0]
print(eval(f"f'{a}'"))
#home/data/month=12/day=1

2 of 2

Thanks to Deepak Tripathi answer, the answer is to use string format. Like this:

day="1"
month="12"
conf_path=pandas.read_json("...")
path=conf_path["path"]
data=spark.read_parquet(path.format(MONTH=month, DAY=day))

This answer was posted as an edit to the question using variable (f)-string stored in json by the OP Florida Man under CC BY-SA 4.0.

reddit.com › r/learnpython › nested f-string problem

r/learnpython on Reddit: Nested F-String Problem

July 3, 2022 -

Hi All,

I'm trying to dynamically change the body of this scrapy request (Offset specifically):

body = '{"xxxxQuery":{"query":"xxxxxxx","locations":[{"country":"gb","address":"xxxx","radius":{"unit":"mi","value":20}}]},"xxxxxxRequest":{"position":[1,2,3,4,5,6,7,8,9],"placement":{"channel":"WEB","location":"JxxxxxPage","property":"xxxxxxxxx","type":"xxxxxxxx","view":"SPLIT"}},"fingerprintId":"xxxxxxxxxxxxxx","offset":0,"xxxxxSize":9,"xxxxxxxx":[]}'

By using :

body = f{"xxxxQuery":{"query":"xxxxxxx","locations":[{"country":"gb","address":"xxxx","radius":{"unit":"mi","value":20}}]},"xxxxxxRequest":{"position":[1,2,3,4,5,6,7,8,9],"placement":{"channel":"WEB","location":"JxxxxxPage","property":"xxxxxxxxx","type":"xxxxxxxx","view":"SPLIT"}},"fingerprintId":"xxxxxxxxxxxxxx","offset":{value},"xxxxxSize":9,"xxxxxxxx":[]}

But I get an error saying the F-String is nested too deeply.

I've even tried to use the body as a dict instead of a string, change the key's value then re-convert back to string but the site returns that it is a bad request.

Any advice on how to get around it?

Top answer

1 of 4

First, your f-string seems to have misplaced quotation marks. It should start and end with quotation marks like this: body = f"your expression here" (or single quotation marks, ' , to avoid confusion with double quotation marks inside the string). Assuming the quotation marks were correct in the first place: The first thing I would try is splitting the f-string into multiple, separate assignments. Example: a = f"Innermost f-string with variable {something}" b = f"Outer f-string with {a} in it" Best of luck!

2 of 4

I'm guessing the body is what you get? And you get it as a string? It seems to be JSON, and you can load JSON using the respective module, change the value, and then dump the object into string again: import json body = '{"xxxxQuery":{"query":"xxxxxxx","locations":[{"country":"gb","address":"xxxx","radius":{"unit":"mi","value":20}}]},"xxxxxxRequest":{"position":[1,2,3,4,5,6,7,8,9],"placement":{"channel":"WEB","location":"JxxxxxPage","property":"xxxxxxxxx","type":"xxxxxxxx","view":"SPLIT"}},"fingerprintId":"xxxxxxxxxxxxxx","offset":0,"xxxxxSize":9,"xxxxxxxx":[]}' data = json.loads(body) data["offset"] = 123 new_body = json.dumps(data) print(new_body)

Real Python

realpython.com › python-f-strings

Python's F-String for String Interpolation and Formatting – Real Python

November 30, 2024 - In the upcoming sections, you’ll write a few more examples of formatting strings using the mini-language with f-strings. F-strings joined the party in Python 3.6 with PEP 498. Also called formatted string literals, f-strings are string literals that have an f before the opening quotation mark.

Marketcalls

marketcalls.in › home › mastering python f-string formatting: a trader’s guide

Mastering Python F-String Formatting: A Trader’s Guide

November 15, 2023 - json.loads is used to parse the JSON string into a Python object (in this case, a list of dictionaries). An f-string is used within a loop to format and print out each stock’s symbol and price.

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Python documentation

docs.python.org › 3 › tutorial › inputoutput.html

7. Input and Output — Python 3.14.7 documentation

Numbers take a bit more effort, since the read() method only returns strings, which will have to be passed to a function like int(), which takes a string like '123' and returns its numeric value 123. When you want to save more complex data types like nested lists and dictionaries, parsing and serializing by hand becomes complicated. Rather than having users constantly writing and debugging code to save complicated data types to files, Python allows you to use the popular data interchange format called JSON (JavaScript Object Notation).

Databricks

community.databricks.com › t5 › get-started-discussions › using-f-strings-in-filenames-to-read-in-files-from-mounted › td-p › 36171

Using F Strings in filenames to read in files from... - Databricks Community - 36171

July 4, 2023 - Using F Strings in filenames to read in files from... ... Below are 2 versions of codes I tried and the failure messages. Does anyone have advice how to form this properly? ... for x in range(2,num_organization_page,1): file_str = f"dbfs:/mnt/dlsi2023/raw/ds_pet_finder_organization{x}.json", print(file_str) organizations_df = spark.read.option("multiline","true").json(f"{file_str}")

GeeksforGeeks

geeksforgeeks.org › formatted-string-literals-f-strings-python

f-strings in Python - GeeksforGeeks

June 19, 2024 - To create an f-string, prefix the ... string literals for formatting. In the below example, we have used the f-string inside a print() method to print a string....

freeCodeCamp

freecodecamp.org › news › python-f-strings-tutorial-how-to-use-f-strings-for-string-formatting

Python f-String Tutorial – String Formatting in Python Explained with Code Examples

September 14, 2021 - Strings in Python are usually enclosed within double quotes ("" ) or single quotes (''). To create f-strings, you only need to add an f or an F before the opening quotes of your string. For example, "This" is a string whereas f"This" is an f-String.

GeeksforGeeks

geeksforgeeks.org › json-formatting-python

JSON Formatting in Python - GeeksforGeeks

August 23, 2023 - The JSON module provides the following two methods to encode Python objects into JSON format. We will be using dump(), dumps(), and JSON.Encoder class. The json.dump() method is used to write Python serialized objects as JSON formatted data into a file. The JSON. dumps() method encodes any Python object into JSON formatted String.

Stack Overflow

stackoverflow.com › questions › 52736009 › python-hiding-json-empty-key-values-with-f-string

Python: Hiding json empty key values with f-string - Stack Overflow

Top answer

1 of 2

You can use a conditional expression in an f-string as well:

return f"{nom} {'(%s)' % dat if dat else ''}. {tit}. {jou}. {'Pubmed: ' + pbm if pbm else ''}"

or you can simply use the and operator:

return f"{nom} {dat and '(%s)' % dat}. {tit}. {jou}. {pbm and 'Pubmed: ' + pbm}"

2 of 2

An easy but slightly fugly workaround is to have the formatting decorations in the string.

try:
    pbm = ". Pubmed: " + art['pubmedId_s']
except (KeyError, NameError):
    pbm = ""
...
print(f"{nom} ({dat}). {tit}. {jou}{pbm}")

DataCamp

datacamp.com › tutorial › python-f-string

Python f-string: A Complete Guide | DataCamp

December 3, 2024 - In this tutorial, you'll learn all about Python Strings: slicing and striding, manipulating and formatting them with the Formatter class, f-strings, templates and more! ... Learn about Python string interpolation, its purpose, and when to use it. Includes practical examples and best practices.

Javatpoint

javatpoint.com › f-string-in-python

F String in Python - Javatpoint

F String in Python - F String in Python with python, tutorial, tkinter, button, overview, entry, checkbutton, canvas, frame, environment set-up, first python program, operators, etc.

Boot.dev

boot.dev › blog › python › python f-strings: syntax, examples, and formatting

Python F-Strings: Syntax, Examples, and Formatting | Boot.dev

August 24, 2026 - An f-string, short for formatted string literal, creates a string while inserting dynamic values into it. Python added the syntax in version 3.6 via PEP 498. num_bananas = 10 bananas = f"You have {num_bananas} bananas" print(bananas) # You have ...

DZone

dzone.com › coding › languages › python f-strings

Python F-Strings - DZone

August 22, 2023 - In Python, F-strings are a way to embed expressions inside string literals, using a simple and concise syntax. F-strings start with the letter f and are followed by a string literal that may contain expressions that are evaluated at runtime and replaced with their values. These expressions are enclosed in curly braces: {}. For example, the following code prints the value of the variable name inside a string:

W3Schools

w3schools.com › python › python_json.asp

Python JSON

Convert a Python object containing all the legal data types: import json x = { "name": "John", "age": 30, "married": True, "divorced": False, "children": ("Ann","Billy"), "pets": None, "cars": [ {"model": "BMW 230", "mpg": 27.5}, {"model": "Ford Edge", "mpg": 24.1} ] } print(json.dumps(x)) Try it Yourself » · The example above prints a JSON string, but it is not very easy to read, with no indentations and line breaks.