This is what we had:
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.4, Release Date: 2018-10-17 │
│ Type "notebook()" for the browser-based notebook interface. │
│ Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: R().eval("a = 2"); R().eval("a + 3")
''
"Error: object 'a' not found"
and this is what we have now:
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.5, Release Date: 2018-12-22 │
│ Using Python 2.7.15. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: R().eval("a = 2"); R().eval("a + 3")
'[1] 2'
'[1] 5'
sage: R() == R()
False
is this supposed to be the case now, i.e. that multiple attempts to create
R interface are linked to the same instance despite being different objects?
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