types.FunctionType types.LambdaType The type of user-defined functions and functions created by lambda

enum.unique() Enum class decorator that ensures only one name is bound to any one value.

class collections.UserString([sequence]) Class that simulates a string or a Unicode string object. The instance’s content is

weakref.proxy(object[, callback]) Return a proxy to object which uses a weak reference. This supports use of the proxy

types.new_class(name, bases=(), kwds=None, exec_body=None) Creates a class object dynamically using the appropriate metaclass

classmethod datetime.now(tz=None) Return the current local date and time. If optional argument tz is None

calendar.prmonth(theyear, themonth, w=0, l=0) Prints a month’s calendar as returned by month().

date.replace(year, month, day) Return a date with the same value, except for those parameters given new values by whichever

data A real list

datetime.astimezone(tz=None) Return a datetime object with new tzinfo attribute tz, adjusting