This document provides a solution for converting YAML files to JSON files using Python and the PyYAML and JSON modules. It explains how to install PyYAML, provides a Python script to perform the conversion, and suggests integrating it as an alias. Using this approach avoids issues that arise from not properly defining dependencies in composer.yml.

1. Episode #2.0.1 (2016-10-24) Level: Beginner
OctoLab Cookbook
How to use composer.yml
and stop creating issues about

2. The context

4. The problem

5. • composer/composer#159
• composer/composer#440
• composer/composer#1778
• composer/composer#1988
• composer/composer#5364
is:issue is:closed yaml

6. The solution

7. Installation
• https://www.python.org/downloads/ (but most cases it
is already exists)
• pip install pyyaml
• or apt-get install python-yaml
• or yum install python-yaml
• etc.
Requirements
• Python
• PyYAML

8. - first: imports
import sys, yaml, json;

9. - second: suppress traceback
sys.tracebacklimit = 0;

10. - third: print it
print(json.dumps(yaml.load(open(sys.argv[1]).read())))

11. - fourth: integrate all together
<command> = python -c
"import sys, yaml, json;
sys.tracebacklimit = 0;
print(json.dumps(yaml.load(open(sys.argv[1]).read()), indent=2))"
# ~/.bash_profile
alias yaml2json = <command>
# use it
yaml2json composer.yml > composer.json

12. The benefits

16. COMMENTS!!!

20. Bonus: PhpStorm integration

22. • Convert YAML to JSON Online with related
tools on different languages for console
• composer-yaml
• Example of usage
• package.meta initiative
Useful links

23. Thank you for your attention!
Have questions?
Kamil Samigullin
a some developer
kamil@samigullin.info
@ikamilsk
github.com/kamilsk
linkedin.com/in/kamilsk