@property
    def _raw_path(self):
        paths = self._raw_paths
        if len(paths) == 1:
            return paths[0]
        elif paths:
            # Join path segments from the initializer.
            path = self.parser.join(*paths)
            # Cache the joined path.
            paths[:] = [path]
            return path
        else:
            paths[:] = ['']
            return ''

import pyperf
from pathlib import Path # or from pathlib_new which is a patched version 

PATH = "/" + "a" * 511
p = Path(PATH)

def bench():
    for i in range(100000):
        a = p.root
        del a

runner = pyperf.Runner()
runner.bench_func('bench', bench)

import pyperf
from pathlib import Path # or from pathlib_new which is a patched version 


PATH = [chr(ord('a') + (i % 26)) for i in range(20)]
p = Path(*PATH)

def bench():
    a = p.root
    del a

runner = pyperf.Runner()
runner.bench_func('bench', bench)

import pyperf
from pathlib_new import Path



PATH = ["abc123" for _ in range(200)]
def bench():
    p = Path(*PATH)
    a = p.root
    del a

runner = pyperf.Runner()
runner.bench_func('bench', bench)

p = Path('/usr', 'local', 'foo', 'bar')
q0 = p / 'spam.txt'
q1 = p / 'eggs.txt'
str(p)
str(q0)
str(q1)

os.path.join('/usr', 'local', 'foo', 'bar')
os.path.join('/usr/local/foo/bar', 'spam.txt')
os.path.join('/usr/local/foo/bar', 'eggs.txt')

os.path.join('/usr', 'local', 'foo', 'bar')
os.path.join('/usr', 'local', 'foo', 'bar', 'spam.txt')
os.path.join('/usr', 'local', 'foo', 'bar', 'eggs.txt')

os.path.join('/usr', 'local', 'foo', 'bar')
os.path.join('/usr', 'local', 'foo', 'bar', 'spam.txt')
os.path.join('/usr', 'local', 'foo', 'bar', 'eggs.txt')