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"""Params class and methods stored here"""
import sys
from param import Bool, Color, Enum, Float, Img_url, Json, Raw, String
class BadParamError(Exception):
pass
class Params(object):
"""
Params is a collection of Param instances,
Args:
kwargs: a list of param names and instances,
as keyword arguments (CURRENTLY UNUSED)
"""
def __init__(self, **kwargs):
for key, value in kwargs.items():
setattr(self, key, value)
def __iter__(self):
for key, value in vars(self).iteritems():
yield key, value
def _error_log(self, s, error=None, fatal=False):
message = "ERROR - BAD PARAM"
if fatal: message += "- [FATAL] -"
sys.stderr.write("{}:{} - {}\n".format(message, self._classname, s))
if error:
sys.stderr.write("PARAM ERROR: {}\n".format(str(error)))
def err_warn(self, s, error=None):
self._error_log(s, error=error);
raise BadParamError("%s - %s" % (self._classname, s))
def __getattr__(self, key):
try:
return self.__getattribute__(key);
except AttributeError:
return None
def definitions_import(self, def_dict, classkwargs, classname=""):
"""main method of this class. takes a dict of definitions,
along with the keyword arguments of the module and maps them
to attribute values of the params class"""
value = None
for key in def_dict.keys():
try:
value = None
if key in classkwargs:
value = classkwargs.get(key, None) or def_dict[key].get('default', None)
elif 'default' in def_dict[key]:
value = def_dict[key]['default']
if def_dict[key]['type'] == "bool":
instance = Bool(value, classname=classname)
elif def_dict[key]['type'] == "color":
instance = Color(value, classname=classname)
elif def_dict[key]['type'] == "enum":
instance = Enum(value, enum_values=def_dict[key]['enum_values'], classname=classname)
elif def_dict[key]['type'] == "float":
instance = Float(value, classname=classname)
elif def_dict[key]['type'] == "img_url":
instance = Img_url(value, key=key, classname=classname)
elif def_dict[key]['type'] == "int":
instance = Int(value, classname=classname)
elif def_dict[key]['type'] == "json":
instance = Json(value, classname=classname)
elif def_dict[key]['type'] == "raw":
instance = Raw(value, classname=classname)
elif def_dict[key]['type'] == "string":
instance = String(value, classname=classname)
self.__setattr__(key, instance)
except Exception as e:
self.err_warn("key: %s value: %s" % (key, str(def_dict[key])), error=str(e))
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