async.py

from pathlib import Path
from typing import List
import asyncio
import time


class DirScanner:
    '''Directory scanner'''

    async def scan(self, dirname: str) -> List[Path]:
        '''Scan recursively a directory and yield Path instance
        for every file within'''
        files: List[Path] = []
        for file in Path(dirname).iterdir():
            if file.is_file():
                files.append(file)
            elif file.is_dir():
                files.extend(*await asyncio.gather(*[self.scan(str(file))]))
        return files


async def cb(path: str) -> None:
    scan: DirScanner = DirScanner()
    for _ in await scan.scan(path):
        _


s = time.time()
asyncio.run(cb('../..'))
print(f'{time.time() - s} second(s)')

async_gen.py

from pathlib import Path
from typing import AsyncIterator
import asyncio
import time


class DirScanner:
    '''Directory scanner'''

    async def scan(self, dirname: str) -> AsyncIterator[Path]:
        '''Scan recursively a directory and yield Path instance
        for every file within'''
        for file in Path(dirname).iterdir():
            if file.is_file():
                yield file
            elif file.is_dir():
                async for file in self.scan(str(file)):
                    yield file


async def cb(path: str) -> None:
    scan: DirScanner = DirScanner()
    async for _ in scan.scan(path):
        _


s = time.time()
asyncio.run(cb('../..'))
print(f'{time.time() - s} second(s)')

sync.py

from pathlib import Path
from typing import List
import time


class DirScanner:
    '''Directory scanner'''

    def scan(self, dirname: str) -> List[Path]:
        '''Scan recursively a directory and yield Path instance
        for every file within'''
        files: List[Path] = []
        for file in Path(dirname).iterdir():
            if file.is_file():
                files.append(file)
            elif file.is_dir():
                files.extend(self.scan(str(file)))
        return files


def cb(path: str) -> None:
    scan: DirScanner = DirScanner()
    for _ in scan.scan(path):
        _


s = time.time()
cb('../..')
print(f'{time.time() - s} second(s)')

sync_gen.py

from pathlib import Path
from typing import Iterator
import time


class DirScanner:
    '''Directory scanner'''

    def scan(self, dirname: str) -> Iterator[Path]:
        '''Scan recursively a directory and yield Path instance
        for every file within'''
        for file in Path(dirname).iterdir():
            if file.is_file():
                yield file
            elif file.is_dir():
                for file in self.scan(str(file)):
                    yield file


def cb(path: str) -> None:
    scan: DirScanner = DirScanner()
    for _ in scan.scan(path):
        _


s = time.time()
cb('../..')
print(f'{time.time() - s} second(s)')

timing

PS C:\Users\sdq\Desktop\DEV\tmp> python sync.py
2.7073585987091064 second(s)
PS C:\Users\sdq\Desktop\DEV\tmp> python async.py
3.3078598976135254 second(s)
PS C:\Users\sdq\Desktop\DEV\tmp> python sync_gen.py
2.663944721221924 second(s)
PS C:\Users\sdq\Desktop\DEV\tmp> python async_gen.py
2.752870559692383 second(s)