Python script to find a .sublime-project file in the current directory and launch the project in Sublime Text.

sublp.py

#!/usr/bin/env python3
import os
import subprocess

cwd = os.getcwd()
file_list = [f for f in os.listdir(cwd) if f.endswith('.sublime-project')]
fl_len = len(file_list)

if fl_len == 0:
    print("sublime-project file not found")
elif fl_len == 1:
    print("opening: {}".format(file_list[0]))
    subprocess.run(["/usr/bin/subl", "--project", file_list[0]])
else:
    print("error: multiple sublime-project files found")