fix: handling config value in _get_values_from_helper

1 files changed, 4 insertions, 2 deletions

diff --git a/gitlab/config.py b/gitlab/config.py
index d2cdbfd..f3fea4f 100644
--- a/gitlab/config.py
+++ b/gitlab/config.py
@@ -204,8 +204,10 @@ class GitlabConfigParser(object):
         """Update attributes, which may get values from an external helper program"""
         for attr in HELPER_ATTRIBUTES:
             value = getattr(self, attr)
-            _value_lower = value.lower().strip()
-            if isinstance(value, str) and _value_lower.startswith(HELPER_PREFIX):
+            if not isinstance(value, str):
+                continue
+
+            if value.lower().strip().startswith(HELPER_PREFIX):
                 helper = expanduser(value[len(HELPER_PREFIX) :].strip())
                 value = subprocess.check_output([helper]).decode("utf-8").strip()
                 setattr(self, attr, value)
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