GeezerVison

all: Mean +- std dev: [main2] 283 ns +- 11 ns -> [pr] 280 ns +- 6 ns: 1.01x faster
all with comparison: Mean +- std dev: [main2] 570 ns +- 14 ns -> [pr] 563 ns +- 9 ns: 1.01x faster

Benchmark hidden because not significant (3): generator, list comprehension, generator exhaust

Geometric mean: 1.00x faster

import pyperf
runner = pyperf.Runner()

setup="""
l=[1,2]
"""

runner.timeit(name=f"generator", stmt=f"(x for x in l)", setup=setup)
runner.timeit(name=f"list comprehension", stmt=f"[x for x in l]", setup=setup)
stmt="""
for x in (_ for _ in ()):
    pass
"""
runner.timeit(name=f"generator exhaust", stmt=stmt, setup=setup)
runner.timeit(name=f"all", stmt=f"all( (x for x in l) ) ", setup=setup)
runner.timeit(name=f"all with comparison", stmt=f"all( (x==1 for x in l) ) ", setup=setup)

def f():
    try: 
        yield None
        print('here')
    except GeneratorExit:
        print("exiting")
    print('done')

g = f()
next(g)
g.close()