【backtrader源码解析33】analyzer.py源码注释(枯燥，仅供参考)

analyzer.py 源码解析

from __future__ import (absolute_import, division, print_function,
                        unicode_literals)

import calendar
from collections import OrderedDict
import datetime
import pprint as pp

import backtrader as bt
from backtrader import TimeFrame
from backtrader