Preserve indentation in code blocks

[tommcd]

I want to keep indentation inside code blocks to allow use cases such as creating file content with significant whitespace:

cat << EOF > format_json.py
#!/usr/bin/env python3
import sys
import json

def main():
    input_data = sys.stdin.read()

    try:
        parsed_data = json.loads(input_data)
    except json.JSONDecodeError:
        print("Error: Input is not valid JSON", file=sys.stderr)
        sys.exit(1)

    json.dump(parsed_data, sys.stdout, indent=4)

if __name__ == "__main__":
    main()
EOF