SyntaxError: invalid syntax

SyntaxError: invalid syntax

not sure why I am getting a invalid syntax on this anyone have any idea's?
import _winreg
explorer = _winreg.OpenKey(
_winreg.HKEY_CURRENT_USER,
"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer"
)
# list values owned by this registry key
try:
i = 0
while 1:
name, value, type = _winreg.EnumValue(explorer, i)
print repr(name),
i += 1
except WindowsError:
print
value, type = _winreg.QueryValueEx(explorer, "Logon User Name")
print
print "user is", repr(value)