diff --git a/archivebox/core/models.py b/archivebox/core/models.py
index fe2d05ab..dca6941f 100644
--- a/archivebox/core/models.py
+++ b/archivebox/core/models.py
@@ -60,6 +60,7 @@ class Tag(models.Model):
         else:
             return super().save(*args, **kwargs)
 
+
 class Snapshot(models.Model):
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
 
@@ -158,6 +159,7 @@ class Snapshot(models.Model):
         self.tags.clear()
         self.tags.add(*tags_id)
 
+
 class ArchiveResultManager(models.Manager):
     def indexable(self, sorted: bool = True):
         INDEXABLE_METHODS = [ r[0] for r in ARCHIVE_METHODS_INDEXING_PRECEDENCE ]
@@ -167,6 +169,8 @@ class ArchiveResultManager(models.Manager):
             precedence = [ When(extractor=method, then=Value(precedence)) for method, precedence in ARCHIVE_METHODS_INDEXING_PRECEDENCE ]
             qs = qs.annotate(indexing_precedence=Case(*precedence, default=Value(1000),output_field=IntegerField())).order_by('indexing_precedence')
         return qs
+
+
 class ArchiveResult(models.Model):
     snapshot = models.ForeignKey(Snapshot, on_delete=models.CASCADE)
     cmd = models.JSONField()
diff --git a/archivebox/logging_util.py b/archivebox/logging_util.py
index bc65e276..7bce3313 100644
--- a/archivebox/logging_util.py
+++ b/archivebox/logging_util.py
@@ -443,7 +443,7 @@ def log_shell_welcome_msg():
     from .cli import list_subcommands
 
     print('{green}# ArchiveBox Imports{reset}'.format(**ANSI))
-    print('{green}from archivebox.core.models import Snapshot, User{reset}'.format(**ANSI))
+    print('{green}from core.models import Snapshot, User{reset}'.format(**ANSI))
     print('{green}from archivebox import *\n    {}{reset}'.format("\n    ".join(list_subcommands().keys()), **ANSI))
     print()
     print('[i] Welcome to the ArchiveBox Shell!')
diff --git a/archivebox/search/__init__.py b/archivebox/search/__init__.py
index ebeebcd0..9efe838b 100644
--- a/archivebox/search/__init__.py
+++ b/archivebox/search/__init__.py
@@ -95,7 +95,8 @@ def index_links(links: Union[List[Link],None], out_dir: Path=OUTPUT_DIR):
     from core.models import Snapshot, ArchiveResult
 
     for link in links:
-        if snap := Snapshot.objects.filter(url=link.url).first():
+        snap = Snapshot.objects.filter(url=link.url).first()
+        if snap: 
             results = ArchiveResult.objects.indexable().filter(snapshot=snap)
             log_index_started(link.url)
             try:
diff --git a/archivebox/search/backends/ripgrep.py b/archivebox/search/backends/ripgrep.py
index 07292e37..ff02008d 100644
--- a/archivebox/search/backends/ripgrep.py
+++ b/archivebox/search/backends/ripgrep.py
@@ -38,7 +38,8 @@ def search(text: str) -> List[str]:
     file_paths = [p.decode() for p in rg.stdout.splitlines()]
     timestamps = set()
     for path in file_paths:
-        if ts := ts_regex.findall(path):
+        ts = ts_regex.findall(path)
+        if ts:
             timestamps.add(ts[0])
     
     snap_ids = [str(id) for id in Snapshot.objects.filter(timestamp__in=timestamps).values_list('pk', flat=True)]