在Python 3.4中迭代OrderedDict时出错
我试图使用{Key,Value}遍历OrderedDict,但遇到了Key错误。我正在使用的Python3.4中不推荐使用iteritems,现在我必须使用items来做同样的事情在Python 3.4中迭代OrderedDict时出错,python,python-3.4,Python,Python 3.4,我试图使用{Key,Value}遍历OrderedDict,但遇到了Key错误。我正在使用的Python3.4中不推荐使用iteritems,现在我必须使用items来做同样的事情 File "/home/hotdogs/mydictset.py", line 88, in __init__ self.mainParams[k]['start'], self.mainParams[k]['step'], self.mainParams[k] ['stop']) KeyError: 'tim
File "/home/hotdogs/mydictset.py", line 88, in __init__
self.mainParams[k]['start'], self.mainParams[k]['step'], self.mainParams[k] ['stop'])
KeyError: 'timed_exit_bars'
class MySet()
def __init__(self, filePath):
# Read diagnostics set file
self.content = readSetFile(filePath)
if not self.content: return
self.sections = self.content._sections
self.mainParams = {}
self.optimizationArray = {}
global paramIndexes
#for k, v in OrderedDict(self.content.items('main')).iteritems(): --was from python 2.7 and i have removed it.
for k, v in OrderedDict(self.content.items('main')).items():
# Add the params names avoiding the optimization line
if k.find(",") == -1:
# Adding name of the param and the value
if k not in self.mainParams:
self.mainParams[k] = {}
self.mainParams[k]['value'] = v
# optimization flags
if self.content.has_option('main', k + ',F'):
if self.content.getboolean('main', k + ',F') == 1:
self.mainParams[k]['optimize'] = True
self.mainParams[k]['start'] = self.content.getfloat('main', k + ',1')
self.mainParams[k]['step'] = self.content.getfloat('main', k + ',2')
self.mainParams[k]['stop'] = self.content.getfloat('main', k + ',3')
self.optimizationArray[paramIndexes[k]] = (
self.mainParams[k]['start'], self.mainParams[k]['step'], self.mainParams[k]['stop'])
else:
self.mainParams[k]['optimize'] = False
else:
self.mainParams[k]['optimize'] = False
i = 0
当我尝试调试密钥错误时。我看到mainParams只包含一个普通的未排序dict,参数本身也是下面调试中的普通dict。样本如下
{'section_1': {'value': '################# General Settings #################', 'optimize': False},
'run_every_tick': {'value': '0', 'optimize': False},
'historic_data_id': {'value': '1', 'optimize': False},
'section_2': {'value': '############## Common Strategy Settings ##############','optimize': False},
'use_instance_balance': {'value': '0', 'optimize': False},
'comments': {'value': 'Click Modify expert to view comments inside the source code.', 'optimize': False},
'operational_mode': {'value': '1', 'optimize': False},
'instance_management': {'value': '0', 'optimize': False},
'analysis_window_size': {'value': '0', 'optimize': False},
'enable_screenshots': {'value': '0', 'optimize': False},
'timed_exit_bars': {'step': 5.0, 'start': 5.0, 'value': '60', 'stop': 100.0, 'optimize': True},
'max_open_orders': {'value': '1', 'optimize': False},
'strategy_timeframe': {'value': '60', 'optimize': False},
'ui_font_size': {'value': '12', 'optimize': False},
'disable_compounding': {'value': '1', 'optimize': False}}
下面是我通过调试ParamIndex得到的示例
{
'INTERNAL_STRATEGY_ID': 52,
'RUN_EVERY_TICK': 43,
'MAX_OPEN_ORDERS': 45,
'OPERATIONAL_MODE': 50,
'ANALYSIS_WINDOW_SIZE': 55,
'TIMEFRAME': 53,
'DISABLE_COMPOUNDING': 47,
'INSTANCE_MANAGEMENT': 44,
'MAX_SPREAD': 59,
'TIMED_EXIT_BARS': 48,
'STRATEGY_INSTANCE_ID': 51,
...
...
....
....
....
....
....
....
....
....
}
有什么我不知道的吗。我似乎无法让它在字典中循环使用条目。非常感谢您的帮助。问题在于:
self.optimizationArray[paramIndexes[k]] = (
self.mainParams[k]['start'], self.mainParams[k]['step'], self.mainParams[k]['stop'])
因为您刚刚创建了self.mainParams[k]['start']、self.mainParams[k]['step']和self.mainParams[k]['stop'],所以这些都不会引发错误。唯一的罪魁祸首是paramIndexes[k]和/或self.optimizationArray[paramIndexes[k]]
我会再次检查paramIndexes是否有k,以及self.optimizationArray是否有paramIndexes[k]映射到的内容
这个问题与信息通信技术无关。这只是一个关键错误。参数索引的值是多少?这可能是k,v在OrderedDictself.content.items“main”中的关键错误。items-在常规dict上调用OrderedDict不会回到过去,检索到您从未跟踪过的订购信息,而在OrderedDict上调用OrderedDict是毫无意义的,除非您需要副本。