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import pprint
import sys
class Param(object):
def __init__(
self,
required=0,
set_by_user=0,
value=None,
name=None,
**kwargs):
self._value_default = None
self.name = name
self.required = required
self.is_ready = 0
self._value = value
self.set_by_user = set_by_user
self._selections = kwargs.get('selections') or []
if len(self._selections):
self._validate_selections()
"""default value is the selection with the heaviest weight"""
self.default(self._choose_heaviest())
def selections(self):
return self._selections
def _validate_selections(self):
try:
int(self._selections[0]['weight'])
self._selections[0]['value']
except Exception:
raise ValueError('Unable to validate %s\n:' % self.name)
def __str__(self):
return pprint.pformat(vars(self))
def value_get(self):
if self.set_by_user == 1:
return self._value
return self._value_default
def value_set(self, value):
self._value = value
# sys.stderr.write("trying to set %s - %s: %s \n" %
# (
# self.__class__.__name__,
# self.name,
# value
# )
# )
if self._value:
self.is_ready = 1
self.set_by_user = 1
value = property(value_get, value_set)
def default(self, value):
self._value_default = value
@property
def is_ready(self):
return self._is_ready or not self.required
@is_ready.setter
def is_ready(self, n):
self._is_ready = n
def randomize(self):
pass
def _choose_heaviest(self):
heaviest_idx = 0
heaviest_weight = 0
idx = 0
if (len(self.selections())):
for elem in self.selections():
if elem["weight"] > heaviest_weight:
heaviest_weight = elem["weight"]
heaviest_idx = idx
idx += 1
return self.selections()[heaviest_idx]["value"]
else:
self.randomize()
def heaviest(self):
self.value = self._choose_heaviest()
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