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3 Best Ways to Convert YAML to JSON with Python, PowerShell & Go

3 Best Ways to Convert YAML to JSON with Python, PowerShell & Go

Whether you’re a Python enthusiast, a PowerShell aficionado, or a Go developer, this article will guide you through the process of converting YAML to JSON using these languages. By the end, you’ll have a clear understanding of the techniques involved and be equipped with the knowledge to choose the best approach based on your specific requirements.

Converting YAML to JSON with Python

Including YAML Support to Python

To add YAML support to Python, you can utilize the PyYAML library, which provides a comprehensive set of tools for working with YAML data. Here’s an example that demonstrates how to use PyYAML to load YAML data, modify it, and save it back to YAML format:

import yaml

# Load YAML data from a file
with open('data.yaml', 'r') as file:
    yaml_data = yaml.safe_load(file)

# Modify the YAML data
yaml_data['name'] = 'John Doe'
yaml_data['age'] = 30

# Save the modified YAML data back to a file
with open('modified_data.yaml', 'w') as file:
    yaml.dump(yaml_data, file)

print("YAML data has been successfully modified and saved.")
Including YAML Support to Python

In this example, we start by importing the yaml module from the PyYAML library. We then use the open() function to load the YAML data from a file called data.yaml into a Python object, yaml_data, using the yaml.safe_load() method.

Next, we modify the yaml_data object by updating some of its properties, such as changing the name and age. Once the modifications are done, we use the open() function again, this time with the mode set to write ('w'), to open a new file called modified_data.yaml for writing.

Finally, we use the yaml.dump() method to serialize the modified yaml_data object back into YAML format and write it to the modified_data.yaml file.

Writing a Conversion Script

To perform the conversion, you can specify the input YAML file path and the desired output JSON file path, and then call the yaml_to_json() function with these arguments. By running this script, you can easily convert YAML files to JSON format using Python and the PyYAML library.

import yaml
import json

def yaml_to_json(yaml_file, json_file):
    # Load YAML data from file
    with open(yaml_file, 'r') as file:
        yaml_data = yaml.safe_load(file)
    
    # Convert YAML to JSON
    json_data = json.dumps(yaml_data, indent=4)
    
    # Save JSON data to file
    with open(json_file, 'w') as file:
        file.write(json_data)

# Specify the input YAML file and output JSON file paths
input_file = 'data.yaml'
output_file = 'data.json'

# Convert YAML to JSON
yaml_to_json(input_file, output_file)

print("Conversion from YAML to JSON is complete.")
Writing a Conversion Script

In this script, we define a function yaml_to_json() that takes the input YAML file path and the output JSON file path as parameters. Inside the function, we use the yaml.safe_load() method to load the YAML data from the input file into a Python object, yaml_data.

Next, we use json.dumps() to convert the yaml_data object to JSON format. The indent parameter is set to 4 to add indentation for readability.

Finally, we open the output JSON file in write mode (‘w’) and write the converted JSON data into it using the file.write() method.

Executing the Conversion Script

To run the conversion script that we created to convert YAML to JSON using Python and the PyYAML library, follow these steps:

  • Make sure you have Python installed on your system. You can download the latest version of Python from the official Python website and follow the installation instructions for your operating system.
  • Install the PyYAML library using pip, the Python package installer. Open a command prompt or terminal and execute the following command: pip install pyyaml
  • Save the conversion script in a Python file with a .py extension, such as yaml_to_json.py.
  • Place the YAML file that you want to convert in the same directory as the script, or provide the full path to the input YAML file in the script.
  • Open a command prompt or terminal and navigate to the directory where the script is located.
  • Execute the script by running the following command: python yaml_to_json.py
  • The script will read the input YAML file, convert it to JSON, and save the converted JSON data to the specified output file or the default file path. You will see a message indicating that the conversion is complete.
  • Check the output file to verify that the YAML to JSON conversion was successful. The converted JSON data will be formatted with proper indentation for readability.

Note: If you have multiple Python versions installed, use the appropriate command to run the script with the desired Python version (e.g., python3 instead of python).

Converting YAML to JSON with PowerShell

Including YAML Support to PowerShell

To add YAML support to PowerShell, you can use external modules such as “PSYaml” or “YamlDotNet. These modules provide cmdlets or functions to read and write YAML files, as well as convert YAML to JSON and vice versa.

Here’s an example of how you can add YAML to JSON in PowerShell:

  • Install the “PSYaml” module from the PowerShell Gallery: Install-Module -Name PSYaml
  • Import the module: Import-Module -Name PSYaml
  • Read a YAML file: $yamlData = Get-YamlData -Path 'path/to/file.yaml'
  • Convert the YAML data to JSON: $jsonData = ConvertTo-Json -InputObject $yamlData
  • You now have the YAML data converted to JSON and can work with it in PowerShell.

Similarly, you can convert JSON to YAML using the same module or other available options. This allows you to manipulate and transform data in different formats, depending on your needs.

Writing a Conversion Script

To automate the conversion process from YAML to JSON in PowerShell, you can create a script that takes a YAML file as input, converts it to JSON, and saves the result to a JSON file. Here’s an example script to accomplish this:

# Import the required module
Import-Module -Name PSYaml

# Define the input YAML file path
$yamlFilePath = 'path/to/input.yaml'

# Define the output JSON file path
$jsonFilePath = 'path/to/output.json'

try {
    # Read the YAML data
    $yamlData = Get-YamlData -Path $yamlFilePath

    # Convert YAML to JSON
    $jsonData = ConvertTo-Json -InputObject $yamlData

    # Save the JSON data to a file
    $jsonData | Out-File -FilePath $jsonFilePath -Encoding UTF8

    Write-Host "YAML to JSON conversion completed. Output saved to: $jsonFilePath"
} catch {
    Write-Host "Error occurred during the conversion process: $_"
}
Writing a Conversion Script

In this script, you start by importing the “PSYaml” module. Then, you define the paths for the input YAML file and the output JSON file.

Inside the try block, the script reads the YAML data using the Get-YamlData cmdlet from the module. It then converts the YAML data to JSON using ConvertTo-Json. Finally, it saves the JSON data to the specified output file using Out-File.

Executing the Conversion Script

Once you have created the PowerShell script to convert YAML to JSON, you can run it to perform the conversion. Here’s how you can execute the script:

  • Launch PowerShell on your computer. You can do this by searching for “PowerShell” in the Start menu or by pressing the Windows key + X and selecting “Windows PowerShell” or “PowerShell” from the menu.
  • Use the cd command to change the current directory to the location where you have saved the conversion script. For example, if the script is saved in “C:\Scripts”, run the following command: cd C:\Scripts
  • If your PowerShell session is running with restricted execution policy, you might need to change it to allow script execution. Run the following command to set the execution policy to “RemoteSigned”: Set-ExecutionPolicy RemoteSigned
  • Run the script: Execute the conversion script by typing its filename (including the .ps1 extension) and pressing Enter. For example, if the script is named “convert-yaml-to-json.ps1”, run the following command: .\convert-yaml-to-json.ps1
  • Monitor the script execution: The script will start running, and you will see the progress and any error messages or success notifications in the PowerShell console. The YAML to JSON conversion will be performed, and the resulting JSON file will be saved to the specified output path.
  • Verify the output: Once the script completes execution, navigate to the specified output JSON file path and open it to verify that the YAML data has been successfully converted to JSON format.

Which Programming Languages Can Be Used to Convert YAML to JSON?

If you’re interested in converting YAML to JSON, mastering PowerShell variables in strings can greatly assist you. PowerShell supports a range of programming languages, including Python, JavaScript, and Ruby, making it versatile. With PowerShell’s variable handling capabilities, you’ll have no trouble accomplishing this conversion seamlessly.

Converting YAML to JSON with Go

Including YAML Support to Go

Go is a powerful programming language known for its simplicity and efficiency. While Go has built-in support for JSON, it doesn’t natively handle YAML (YAML Ain’t Markup Language) data. You can add YAML support to your Go applications by utilizing external libraries. Here’s how you can do it:

  • There are several popular YAML libraries available for Go. You can choose the library that best suits your needs based on factors like performance, API design, and community support.
  • Once you have chosen a YAML library, import it into your Go code by adding the corresponding import statement. For example, if you’re using “gopkg.in/yaml.v3”, add the following import statement at the beginning of your Go file: import "gopkg.in/yaml.v3"
  • Use the functions and methods provided by the YAML library to parse YAML data into Go data structures. Typically, you will find functions like Unmarshal or Decode that can convert YAML data into Go objects. Refer to the documentation of the chosen YAML library for specific usage details.
  • When parsing YAML data, it’s important to handle any errors that may occur. Most YAML libraries return an error value in case of parsing failures. Make sure to check for errors and handle them appropriately in your code.
  • Once the YAML data is successfully parsed into Go objects, you can process the data as needed within your Go application. You can access individual fields, perform validations, and use the data for various purposes within your program.

Writing a Conversion Script

To write a conversion script in Go for converting YAML to JSON, we can utilize the gopkg.in/yaml.v3 package for YAML parsing and the encoding/json package for JSON serialization. Here’s an example of how you can implement the conversion script:

package main

import (

"encoding/json"

"fmt"

"gopkg.in/yaml.v3"

"io/ioutil"

"log"

"os"

)

func main() {

// Read the YAML file

yamlFile, err := ioutil.ReadFile("input.yaml")

if err != nil {

log.Fatal(err)

}

// Parse the YAML data

var data interface{}

err = yaml.Unmarshal(yamlFile, &data)

if err != nil {

log.Fatal(err)

}

// Convert YAML to JSON

jsonData, err := json.MarshalIndent(data, "", "  ")

if err != nil {

log.Fatal(err)

}

// Write the JSON data to a file

err = ioutil.WriteFile("output.json", jsonData, os.ModePerm)

if err != nil {

log.Fatal(err)

}

fmt.Println("Conversion completed successfully!")

}
Writing a Conversion Script

In this script, we first read the YAML file using ioutil.ReadFile and then parse the YAML data using yaml.Unmarshal into an interface{}. We then use json.MarshalIndent to convert the parsed data into JSON format with proper indentation. Finally, we write the JSON data to an output file using ioutil.WriteFile.

Executing the Conversion Script

To run the conversion script in Go, follow these steps:

  • Open a text editor and create a new file.
  • Copy the provided Go code for the conversion script into the file.
  • Save the file with a .go extension, such as script.go.
  • Open a terminal or command prompt and navigate to the directory where the Go script is saved.
  • Run the script using the go run command followed by the script filename. For example: go run script.go

Make sure you have Go installed on your system and properly configured before running the script. The script will read the input YAML file, convert it to JSON, and save the output to the specified file. Once the script finishes running, you’ll see a message indicating that the conversion was completed successfully.

 By exploring these three approaches, you now have the knowledge and tools to convert YAML to JSON in Python, PowerShell, and Go based on your specific requirements. Choose the language that best suits your needs and integrate the conversion process seamlessly into your projects. Happy Browsing!