Method create

pex/resolver.py:188–209

(
        cls,
        log,  # type: Optional[PipLog]
        download_targets,  # type: Sequence[DownloadTarget]
    )

    @classmethod
    def create(
        cls,
        log,  # type: Optional[PipLog]
        download_targets,  # type: Sequence[DownloadTarget]
    ):
        # type: (...) -> PipLogManager
        log_by_download_target = {}  # type: Dict[DownloadTarget, str]
        if log and len(download_targets) == 1:
            log_by_download_target[download_targets[0]] = log.path
        elif log:
            log_dir = safe_mkdtemp(prefix="pex-pip-log.")
            log_by_download_target.update(
                (
                    download_target,
                    os.path.join(
                        log_dir,
                        "pip.{target}.log".format(target=download_target.id(complete=True)),
                    ),
                )
                for download_target in download_targets
            )
        return cls(log=log, log_by_download_target=log_by_download_target)

    log = attr.ib()  # type: Optional[PipLog]
    _log_by_download_target = attr.ib()  # type: Mapping[DownloadTarget, str]