Script to convert org-roam v2 .org files to Obsidian .md files. Definitely missing a lot of required features, but gets the basic job done as I needed.

org-roam-to-obsidian.py

import glob, os
import fileinput
import re
import shutil

dict_file_id = {}

# Rename file to the title of the markdown
for filename in glob.iglob('**', recursive=True):
    if os.path.isfile(filename): # filter dirs
        if '.md' in filename:
            with open(filename, 'r') as file_fd:
                lines = file_fd.readlines()
                for line in lines:
                    if '#+title' in line:
                        file_path = "/".join(filename.split("/")[:-1])
                        original_filename = "/".join([file_path, filename.split("/")[-1]])
                        new_filename = "/".join([file_path, line.replace('#+title: ', '').rstrip('\n').replace("/", ">")]) + ".md"
                        shutil.move(original_filename, new_filename)

# Get list of all IDs and create a dictionary to map IDs to filenames
for filename in glob.iglob('**', recursive=True):
    if os.path.isfile(filename): # filter dirs
        if '.md' in filename:
            with open(filename, 'r') as file_fd:
                lines = file_fd.readlines()
                for line in lines:
                    if ':ID:' in line:
                        node_id = line.split(" ")[1:][-1].rstrip('\n')
                        dict_file_id[node_id] = '(' + filename.replace(' ', '%20') + ')'

for filename in glob.iglob('**', recursive=True):
    if os.path.isfile(filename): # filter dirs
        if '.md' in filename:
            for i in range(0, 9):
                with open(filename, 'r+') as file_fd:
                    #for line in file_fd.readlines():
                    for line in fileinput.input(filename, inplace = True):
                        # Convert node ID tags
                        if ':ID:' in line and i == 0:
                            node_id = line.split(" ")[1:][-1].rstrip('\n')
                            if node_id in dict_file_id.keys():
                                print(line.replace(node_id, dict_file_id[node_id]).rstrip('\n'))
                                pass
                        # Convert ID links
                        elif '[id:' in line:
                            node_id = re.search('.*(\[id\:.*)\]\[.*', line).group(1).rstrip('\n')
                            node_id = node_id.split(":")[1:][-1].rstrip('\n')
                            node_tag = re.search('.*(\[.*\]\]).*', line).group(1).rstrip('\n')
                            node_tag_edit = node_tag[:-1]
                            print(line.replace('[[id:' + node_id + ']', node_tag_edit).rstrip('\n').replace(node_tag, dict_file_id[node_id]))
                        # Convert title to h1 for obsidian to use as node name
                        elif '#+title' in line:
                            print(line.replace('+title:', '').rstrip('\n'))
                        # Convert filetags to obsidian tags
                        elif '#+filetags' in line:
                            print(line.replace('#+filetags: ', 'Tags ').replace(':', ' #').rstrip('\n')[:-1])
                        # Lines with no change
                        else:
                            print(line.rstrip('\n'))