Create an Omnifocus project from a template file (the first argument). The variables should be written as: `{variable}`

template2ofproj.py

#!/usr/bin/env python3
import re
import sys

if __name__ == "__main__":
    template_path = sys.argv[1]
    content = open(template_path).read()

    var_pattern = re.compile('{.+?}')
    variables = set(re.findall(var_pattern, content))
    for var in variables:
        var_str = input(f'{var}? ')
        content = re.sub(var, var_str, content)
    print(content)

On a Mac, one can run

template2ofproj.py template_file.txt | pbcopy 

to copy the result to the clipboard, which can then be pasted to OmniFocus.

An example template file:

Trip to {destination}: @parallel(false) @autodone(false) @due({due})
- Check passport @tags(Home) @due({due} -5w)
- Buy a plane ticket @due({due} -30d) @tags(Online, Computer)
- Book a hotel room @due({due} -28d) @tags(Online)

TaskPaper format reference: https://support.omnigroup.com/omnifocus-taskpaper-reference/