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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def install_dependencies(dependencies, verbose=False):
 """Install all packages in dependency list via pip."""

    if not dependencies:
        return

    stdout = stderr = None if verbose else subprocess.DEVNULL
    with tempfile.TemporaryDirectory() as req_dir:
        req_file = Path(req_dir) / "requirements.txt"

        with open(req_file, "w") as f:
            for dependency in dependencies:
                f.write(f"{dependency}\n")

        pip = ["python3", "-m", "pip", "install", "-r", req_file]
        # Unless we are in a virtualenv, we need --user
        if sys.base_prefix == sys.prefix and not hasattr(sys, "real_prefix"):
            pip.append("--user")

        try:
            subprocess.check_call(pip, stdout=stdout, stderr=stderr)
        except subprocess.CalledProcessError:
            raise Error(_("failed to install dependencies"))

        # Reload sys.path, to find recently installed packages
        importlib.reload(site)