DONE

Move in-subtree archive to separate archive file

import org_rw
import os

def recursively_raise_depth_to(hl: org_rw.Headline, new_depth: int):
    assert hl.depth >= new_depth
    depth_change = hl.depth - new_depth
    recursively_raise_depth(hl, depth_change)

def recursively_raise_depth(hl, depth_change):
    for child in hl.children:
        recursively_raise_depth(child, depth_change)
    hl.depth -= depth_change

def move_in_subtree_archive_to_separate_archive_file(from_doc: org_rw.OrgDoc, to_doc: org_rw.OrgDoc):
    # Get all archives
    archives = []
    for hl in from_doc.getAllHeadlines():
        if hl.title.get_text().strip() == 'Archive' and 'ARCHIVE' in hl.tags:
            archives.append(hl)

    print("Found {} archives".format(len(archives)))
    change_count = 0
    for archive in archives:
        if archive.parent.id is None:
            print("Skipping archive as parent ({}; title={}) has no ID".format(archive.parent, archive.parent.title if isinstance(archive.parent, org_rw.Headline) else '(doc)'))
            continue

        parid = archive.parent.id
        while len(archive.children) > 0:
            change_count += 1
            hl = archive.children.pop(0)
            hl.set_property('ARCHIVE_PARENT_ID', parid)

            recursively_raise_depth_to(hl, 1)
            to_doc.headlines.append(hl)

    print("{} changes applied".format(change_count))

with open(os.path.expanduser('~/.logs/logs.org.txt_archive'), 'rt') as farc:
    with open(os.path.expanduser('~/.logs/logs.org.txt'), 'rt') as f:
        from_doc = org_rw.load(f)
        to_doc = org_rw.load(farc)

move_in_subtree_archive_to_separate_archive_file(from_doc, to_doc)

# Save archives first
with open(os.path.expanduser('~/.logs/logs.org.txt_archive'), 'wt') as farc:
    org_rw.dump(to_doc, farc)
with open(os.path.expanduser('~/.logs/logs.org.txt'), 'wt') as f:
    org_rw.dump(from_doc, f)