Move from pkg_resources to packaging, fix: #1925

Author: hankcs

hanlp/utils/io_util.py

@@ -25,7 +25,7 @@
 
 from hanlp_downloader import Downloader
 from hanlp_downloader.log import DownloadCallback
-from pkg_resources import parse_version
+from packaging.version import Version
 
 import hanlp
 from hanlp_common.constant import HANLP_URL, HANLP_VERBOSE
@@ -688,15 +688,15 @@ def check_outdated(package='hanlp', version=__version__, repository_url='https:/
     Returns:
         Parsed installed version and latest version.
     """
-    installed_version = parse_version(version)
+    installed_version = Version(version)
     latest_version = get_latest_info_from_pypi(package, repository_url)
     return installed_version, latest_version
 
 
 def get_latest_info_from_pypi(package='hanlp', repository_url='https://pypi.python.org/pypi/%s/json'):
     url = repository_url % package
     response = urllib.request.urlopen(url).read()
-    return parse_version(json.loads(response)['info']['version'])
+    return Version(json.loads(response)['info']['version'])
 
 
 def check_version_conflicts(extras=None):