Get version info from importlib.metadata

cps/debug_info.py

@@ -26,7 +26,8 @@ from flask_babel.speaklater import LazyString
 
 import os
 
-from flask import send_file, __version__
+from flask import send_file
+import importlib
 
 from . import logger, config
 from .about import collect_stats
@@ -49,7 +50,8 @@ def assemble_logfiles(file_name):
         with open(f, 'rb') as fd:
             shutil.copyfileobj(fd, wfd)
     wfd.seek(0)
-    if int(__version__.split('.')[0]) < 2:
+    version = importlib.metadata.version("flask")
+    if int(version.split('.')[0]) < 2:
         return send_file(wfd,
                          as_attachment=True,
                          attachment_filename=os.path.basename(file_name))