def sstrrepr(expr, **settings):

    p = StrReprPrinter(settings)
    s = p.doprint(expr)

    return s
Test if auto pk is *not* overwritten.
dataset/ETHPy150Open sympy/sympy/sympy/printing/str.py/sstrrepr--crossover with--dataset/ETHPy150Open zlorf/django-synchro/synchro/tests.py/SimpleSynchroTests.test_auto_pk