views.py 文件源码

def _compute_date(files):
    from datetime import datetime
    timestamps = map(lambda path: os.stat(path).st_mtime, files) + [0] if files else []
    max_timestamp = max(*timestamps) if timestamps else None
    if max_timestamp:
        # we set the micros to 0 since microseconds are not speced for HTTP
        max_timestamp = datetime.fromtimestamp(max_timestamp).replace(microsecond=0)
    return max_timestamp