# Copyright 2019-2020 The Lux Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
from typing import List, Union, Callable, Dict
from lux.history.event import Event
[docs]class History():
"""
History maintains a list of past Pandas operations performed on the dataframe
Currently only supports custom overridden functions (head, tail, info, describe)
"""
def __init__(self):
self._events=[]
def __getitem__(self, key):
return self._events[key]
def __setitem__(self, key, value):
self._events[key] = value
def __len__(self):
return len(self._events)
def __repr__(self):
event_repr=[]
for event in self._events:
event_repr.append(event.__repr__())
return "["+'\n'.join(event_repr)+"]"
[docs] def append_event(self,name,*args,**kwargs):
event = Event(name,*args,**kwargs)
self._events.append(event)