build.py 文件源码

def __init__(self, name=None, delete=None):
        # If we were not given an explicit directory, and we were not given an
        # explicit delete option, then we'll default to deleting.
        if name is None and delete is None:
            delete = True

        if name is None:
            # We realpath here because some systems have their default tmpdir
            # symlinked to another directory.  This tends to confuse build
            # scripts, so we canonicalize the path by traversing potential
            # symlinks here.
            name = os.path.realpath(tempfile.mkdtemp(prefix="pip-build-"))
            # If we were not given an explicit directory, and we were not given
            # an explicit delete option, then we'll default to deleting.
            if delete is None:
                delete = True

        self.name = name
        self.delete = delete