def log(arg, base=None):
    op = _ops.Log(arg, base)
    return op.to_expr()
Test merge with replace and Update
dataset/ETHPy150Open cloudera/ibis/ibis/expr/api.py/log--crossover with--dataset/ETHPy150Open sahana/eden/modules/unit_tests/s3/s3resource.py/MergeOrganisationsTests.testMergeReplaceAndUpdate