Code formatting

- Added requests as a dependency (although currently brought in by warc2zim)
- removed unused imports
- black code formatting and some cleanup
- revamped actual_url fetching

Dockerfile

@@ -4,7 +4,7 @@ RUN mkdir -p /output
 
 WORKDIR /app
 
-RUN pip install 'warc2zim>=1.3.1'
+RUN pip install 'warc2zim>=1.3.1' 'requests>=2.24.0'
 
 ADD zimit.py /app/
 

zimit.py

@@ -9,18 +9,16 @@ and then calls the Node based driver
 """
 
 from argparse import ArgumentParser
-import os
 import tempfile
 import subprocess
 import atexit
 import shutil
-import glob
 import signal
 import sys
 from pathlib import Path
+from urllib.parse import urlsplit
 
 from warc2zim.main import warc2zim
-from urllib.parse import urlsplit
 import requests
 
 
@@ -35,7 +33,7 @@ def zimit(args=None):
 
     parser.add_argument(
         "--newContext",
-        help="The context for each new capture, can be a new: page, session or browser.",
+        help="The context for each new capture (page, session or browser).",
         choices=["page", "session", "browser"],
         default="page",
     )
@@ -60,7 +58,8 @@ def zimit(args=None):
 
     parser.add_argument(
         "--scope",
-        help="Regex of page URLs that should be included in the crawl (defaults to the immediate directory of the URL)",
+        help="Regex of page URLs that should be included in the crawl "
+        "(defaults to the immediate directory of the URL)",
     )
 
     parser.add_argument(
@@ -110,10 +109,11 @@ def zimit(args=None):
     temp_root_dir = Path(tempfile.mkdtemp(dir=zimit_args.output, prefix=".tmp"))
 
     if not zimit_args.keep:
+
         def cleanup():
             print("")
             print("----------")
-            print("Cleanup, removing temp dir: " + str(temp_root_dir))
+            print(f"Cleanup, removing temp dir: {temp_root_dir}")
             shutil.rmtree(temp_root_dir)
 
         atexit.register(cleanup)
@@ -130,7 +130,7 @@ def zimit(args=None):
 
     print("")
     print("----------")
-    print("running browsertrix-crawler crawl: " + cmd_line)
+    print(f"running browsertrix-crawler crawl: {cmd_line}")
     subprocess.run(cmd_args, check=True)
 
     warc_files = temp_root_dir / "collections" / "capture" / "archive"
@@ -140,26 +140,31 @@ def zimit(args=None):
 
     print("")
     print("----------")
-    print("Processing {0} WARC files to ZIM".format(num_files))
+    print(f"Processing {num_files} WARC files to ZIM")
 
     return warc2zim(warc2zim_args)
 
+
 def check_url(url):
-    resp = requests.get(url, allow_redirects=True, timeout=3)
-    actual_url = resp.url
     try:
-        resp.close()
+        resp = requests.head(url, stream=True, allow_redirects=True, timeout=10)
-    except Exception:
+    except requests.exceptions.RequestException as exc:
-        pass
+        print(f"failed to connect to {url}: {exc}")
+        raise SystemExit(1)
+    actual_url = resp.url
 
     if actual_url != url:
         if urlsplit(url).netloc != urlsplit(actual_url).netloc:
-            raise ValueError("Main page URL ({0}) redirects to out-of-scope domain ({1}), cancelling crawl".format(url, actual_url))
+            raise ValueError(
+                f"Main page URL ({url}) redirects to out-of-scope domain "
+                f"({actual_url}), cancelling crawl"
+            )
 
         return actual_url
 
     return url
 
+
 def get_node_cmd_line(args):
     node_cmd = ["crawl"]
     for arg in [