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-rw-r--r--Lib/urllib.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/urllib.py b/Lib/urllib.py
index d2a4c48..e01f421 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -114,7 +114,7 @@ class URLopener:
def __init__(self, proxies=None, **x509):
if proxies is None:
proxies = getproxies()
- assert hasattr(proxies, 'has_key'), "proxies must be a mapping"
+ assert hasattr(proxies, 'keys'), "proxies must be a mapping"
self.proxies = proxies
self.key_file = x509.get('key_file')
self.cert_file = x509.get('cert_file')