(platform: str = sys.platform)
return (
        platform.startswith("linux")
        or platform.startswith("darwin")
        or platform.startswith("cygwin")
    )
Returns whether the given platform is a Unix-like platform with the usual
    Unix filesystem. When the parameter is omitted, it defaults to ``sys.platform``
Returns whether the given platform is a Unix-like platform with the usual
    Unix filesystem. When the parameter is omitted, it defaults to ``sys.platform``
Returns whether the given platform is a Unix - like platform with the usual Unix filesystem . When the parameter is omitted it defaults to sys . platform
def is_unix_like(platform: str = sys.platform) -> bool:
    """Returns whether the given platform is a Unix-like platform with the usual
    Unix filesystem. When the parameter is omitted, it defaults to ``sys.platform``
    """
    platform = platform or sys.platform
    platform = platform.lower()
    return (
        platform.startswith("linux")
        or platform.startswith("darwin")
        or platform.startswith("cygwin")
    )
def is_unix_like ( platform : str = sys . platform ) -> bool : platform = platform or sys . platform platform = platform . lower ( ) return ( platform . startswith ( "linux" ) or platform . startswith ( "darwin" ) or platform . startswith ( "cygwin" ) )