Copy variables dict before scrubbing secrets.

This dict is the actual variables dict. Changing its members will directly
change the values of the current object. The __repr__ function overwrites both
secrets with stars.

1 files changed, 1 insertions, 1 deletions

diff --git a/oauthlib/oauth1/rfc5849/__init__.py b/oauthlib/oauth1/rfc5849/__init__.py
index 4589d54..405bf1f 100644
--- a/oauthlib/oauth1/rfc5849/__init__.py
+++ b/oauthlib/oauth1/rfc5849/__init__.py
@@ -104,7 +104,7 @@ class Client(object):
             raise ValueError('rsa_key is required when using RSA signature method.')
 
     def __repr__(self):
-        attrs = vars(self)
+        attrs = vars(self).copy()
         attrs['client_secret'] = '****' if attrs['client_secret'] else None
         attrs['resource_owner_secret'] = '****' if attrs['resource_owner_secret'] else None
         attribute_str = ', '.join('%s=%s' % (k, v) for k, v in attrs.items())