Log retrieval of showNumPages

ia-cdx-search

@@ -25,7 +25,9 @@ baseUrl = f'https://web.archive.org/cdx/search/cdx?{query}'
 if sys.argv[2:]:
 	startPage, numPages = map(int, sys.argv[2:])
 else:
-	req = urllib.request.Request(f'{baseUrl}&showNumPages=true')
+	url = f'{baseUrl}&showNumPages=true'
+	print(f'GET {url}', file = sys.stderr)
+	req = urllib.request.Request(url)
 	with urllib.request.urlopen(req) as r:
 		if r.getcode() != 200:
 			raise RuntimeError(f'Could not fetch number of pages')