def lean_projection(expr):
    fields = expr.fields
    return _lean(expr, fields=fields)[0]
Test for `httplib.HTTPSConnection`.
dataset/ETHPy150Open blaze/blaze/blaze/expr/optimize.py/lean_projection--crossover with--dataset/ETHPy150Open openstack/bandit/tests/functional/test_functional.py/FunctionalTests.test_httplib_https