diff --git a/gallery_dl/extractor/imagehosts.py b/gallery_dl/extractor/imagehosts.py
index 6067412eee5..ca343a086de 100644
--- a/gallery_dl/extractor/imagehosts.py
+++ b/gallery_dl/extractor/imagehosts.py
@@ -285,11 +285,13 @@ def get_info(self, page):
         url = text.extract(page, 'src="', '"', page.index("<img "))[0]
         return url, url
 
+
 class TurboimagehostGalleryExtractor(ImagehostImageExtractor):
     """Extractor for image galleries from turboimagehost.com"""
     category = "turboimagehost"
     subcategory = "gallery"
-    pattern = r"(?:https?://)?((?:www\.)?turboimagehost\.com/album/(\d+)/([^/?#]*))"
+    pattern = (r"(?:https?://)?((?:www\.)?turboimagehost\.com"
+               r"/album/(\d+)/([^/?#]*))")
     example = "https://www.turboimagehost.com/album/12345/gallery_name"
 
     def __init__(self, match):
@@ -297,14 +299,18 @@ def __init__(self, match):
 
         self.gallery_id = match.group(2)
         self.gallery_name = match.group(3)
-        self.base_url = f"https://www.turboimagehost.com/album/{self.gallery_id}/{self.gallery_name}"
+        self.base_url = "https://www.turboimagehost.com/album/{}/{}".format(
+            self.gallery_id, self.gallery_name
+        )
         self.page_url = self.base_url
 
     def items(self):
         page = 1
 
         while True:
-            self.log.debug(f"Fetching page number {page}: {self.page_url}")
+            self.log.debug(
+                "Fetching page number {}: {}".format(page, self.page_url)
+            )
             response = self.request(self.page_url)
             page_content = response.text
 
@@ -316,7 +322,11 @@ def items(self):
                 if page == 1:
                     self.log.info("No images found in gallery, exiting...")
                 else:
-                    self.log.debug(f"No thumbnails found on page number {page}, the page probably doesn't exist, exiting...")
+                    self.log.debug(
+                        "No thumbnails found on page number {}, "
+                        "the page probably doesn't "
+                        "exist, exiting...".format(page)
+                    )
                 break
 
             for image_page_url in thumbnails:
@@ -324,7 +334,7 @@ def items(self):
                 yield Message.Queue, image_page_url, data
 
             page += 1
-            self.page_url = f"{self.base_url}?p={page}"
+            self.page_url = "{}?p={}".format(self.base_url, page)
 
     def _extract_image_pages(self, page_content):
         thumbnails = []
@@ -340,6 +350,7 @@ def _extract_image_pages(self, page_content):
                     thumbnails.append(href)
         return thumbnails
 
+
 class ViprImageExtractor(ImagehostImageExtractor):
     """Extractor for single images from vipr.im"""
     category = "vipr"