Is it possible to install sage 7.1 on OSX 10.11?

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I can't get the binary app (7.1) to install on OSX 10.11 -- the same error appears with 7.2 beta0.

The install fails at the setting up the paths stage when the app is clicked for the first time.

The error is shown below. Is this fixable? Switching SIP off has no effect.

Dess-MacBook:~ des$ '/Applications/SageMath-7.1.app/Contents/Resources/sage/sage' --notebook
  File "/Applications/SageMath-7.1.app/Contents/Resources/sage/relocate-once.py", line 12
    print "relocate-once.py -d <destination>"
                                            ^
SyntaxError: Missing parentheses in call to 'print'
Traceback (most recent call last):
  File "/Applications/SageMath-7.1.app/Contents/Resources/sage/src/bin/sage-notebook", line 7, in <module>
    import argparse
  File "/Applications/SageMath-7.1.app/Contents/Resources/sage/local/lib/python/argparse.py", line 85, in <module>
    import collections as _collections
  File "/Applications/SageMath-7.1.app/Contents/Resources/sage/local/lib/python/collections.py", line 9, in <module>
    from operator import itemgetter as _itemgetter, eq as _eq
ImportError: dlopen(/Applications/SageMath-7.1.app/Contents/Resources/sage/local/lib/python2.7/lib-dynload/operator.so, 2): Symbol not found: __PyUnicodeUCS4_AsDefaultEncodedString
  Referenced from: /Applications/SageMath-7.1.app/Contents/Resources/sage/local/lib/python2.7/lib-dynload/operator.so
  Expected in: flat namespace
 in /Applications/SageMath-7.1.app/Contents/Resources/sage/local/lib/python2.7/lib-dynload/operator.so
Dess-MacBook:~ des$