template.py 文件源码

def __init__(self, autoescape=_DEFAULT_AUTOESCAPE, namespace=None):
        """``autoescape`` must be either None or a string naming a function
        in the template namespace, such as "xhtml_escape".
        """
        self.autoescape = autoescape
        self.namespace = namespace or {}
        self.templates = {}
        # self.lock protects self.templates.  It's a reentrant lock
        # because templates may load other templates via `include` or
        # `extends`.  Note that thanks to the GIL this code would be safe
        # even without the lock, but could lead to wasted work as multiple
        # threads tried to compile the same template simultaneously.
        self.lock = threading.RLock()