>>> from string import Template
>>> assert Template.flags is None
>>> help(Template)
Help on class Template in module string:

class Template(builtins.object)
 |  Template(template)
 |
 |  A string class for supporting $-substitutions.
 |
 |  Methods defined here:
 |
 |  __init__(self, template)
 |      Initialize self.  See help(type(self)) for accurate signature.
 |
 |  get_identifiers(self)
 |
 |  is_valid(self)
 |
 |  safe_substitute(self, mapping={}, /, **kws)
 |
 |  substitute(self, mapping={}, /, **kws)
 |
 |  ----------------------------------------------------------------------
 |  Class methods defined here:
 |
 |  __init_subclass__()
 |      This method is called when a class is subclassed.
 |
 |      The default implementation does nothing. It may be
 |      overridden to extend subclasses.
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors defined here:
 |
 |  __dict__
 |      dictionary for instance variables
 |
 |  __weakref__
 |      list of weak references to the object
 |
 |  ----------------------------------------------------------------------
 |  Data and other attributes defined here:
 |
 |  braceidpattern = None
 |
 |  delimiter = '$'
 |
 |  flags = re.IGNORECASE
 |
 |  idpattern = '(?a:[_a-z][_a-z0-9]*)'
 |
 |  pattern = re.compile('\n            \\$(?:\n              ...identifie...

>>>