forked from holoviz/panel
-
Notifications
You must be signed in to change notification settings - Fork 0
/
param.py
695 lines (597 loc) · 28 KB
/
param.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
"""
Defines the Param pane which converts Parameterized classes into a
set of widgets.
"""
from __future__ import absolute_import, division, unicode_literals
import os
import sys
import json
import types
import inspect
import itertools
from collections import OrderedDict, namedtuple
from six import string_types
import param
from bokeh.io import curdoc as _curdoc
from param.parameterized import classlist
from .io import state
from .layout import Row, Panel, Tabs, Column
from .pane.base import PaneBase, ReplacementPane
from .util import (
abbreviated_repr, full_groupby, get_method_owner, is_parameterized,
param_name, recursive_parameterized
)
from .viewable import Layoutable
from .widgets import (
Button, Checkbox, ColorPicker, DataFrame, DatetimeInput, DateRangeSlider,
FloatSlider, IntSlider, LiteralInput, MultiSelect, RangeSlider,
Select, StaticText, TextInput, Toggle, Widget
)
from .widgets.button import _ButtonBase
def FileSelector(pobj):
"""
Determines whether to use a TextInput or Select widget for FileSelector
"""
if pobj.path:
return Select
else:
return TextInput
class Param(PaneBase):
"""
Param panes render a Parameterized class to a set of widgets which
are linked to the parameter values on the class.
"""
display_threshold = param.Number(default=0, precedence=-10, doc="""
Parameters with precedence below this value are not displayed.""")
default_layout = param.ClassSelector(default=Column, class_=Panel,
is_instance=False)
default_precedence = param.Number(default=1e-8, precedence=-10, doc="""
Precedence value to use for parameters with no declared
precedence. By default, zero predecence is available for
forcing some parameters to the top of the list, and other
values above the default_precedence values can be used to sort
or group parameters arbitrarily.""")
expand = param.Boolean(default=False, doc="""
Whether parameterized subobjects are expanded or collapsed on
instantiation.""")
expand_button = param.Boolean(default=None, doc="""
Whether to add buttons to expand and collapse sub-objects.""")
expand_layout = param.Parameter(default=Column, doc="""
Layout to expand sub-objects into.""")
height = param.Integer(default=None, bounds=(0, None), doc="""
Height of widgetbox the parameter widgets are displayed in.""")
initializer = param.Callable(default=None, doc="""
User-supplied function that will be called on initialization,
usually to update the default Parameter values of the
underlying parameterized object.""")
parameters = param.List(default=[], doc="""
If set this serves as a whitelist of parameters to display on the supplied
Parameterized object.""")
show_labels = param.Boolean(default=True, doc="""
Whether to show labels for each widget""")
show_name = param.Boolean(default=True, doc="""
Whether to show the parameterized object's name""")
width = param.Integer(default=300, allow_None=True, bounds=(0, None), doc="""
Width of widgetbox the parameter widgets are displayed in.""")
widgets = param.Dict(doc="""
Dictionary of widget overrides, mapping from parameter name
to widget class.""")
priority = 0.1
_unpack = True
_mapping = {
param.Action: Button,
param.Boolean: Checkbox,
param.Color: ColorPicker,
param.Date: DatetimeInput,
param.DateRange: DateRangeSlider,
param.DataFrame: DataFrame,
param.Dict: LiteralInput,
param.FileSelector: FileSelector,
param.Integer: IntSlider,
param.ListSelector: MultiSelect,
param.Number: FloatSlider,
param.ObjectSelector: Select,
param.Parameter: LiteralInput,
param.Range: RangeSlider,
param.Selector: Select,
param.String: TextInput,
}
_rerender_params = []
def __init__(self, object=None, **params):
if isinstance(object, param.Parameter):
if not 'show_name' in params:
params['show_name'] = False
params['parameters'] = [object.name]
object = object.owner
if isinstance(object, param.parameterized.Parameters):
object = object.cls if object.self is None else object.self
if 'parameters' not in params and object is not None:
params['parameters'] = [p for p in object.param if p != 'name']
super(Param, self).__init__(object, **params)
self._updating = []
# Construct Layout
kwargs = {p: v for p, v in self.get_param_values() if p in Layoutable.param}
self._widget_box = self.default_layout(**kwargs)
layout = self.expand_layout
if isinstance(layout, Panel):
self._expand_layout = layout
self.layout = self._widget_box
elif isinstance(self._widget_box, layout):
self.layout = self._expand_layout = self._widget_box
elif isinstance(layout, type) and issubclass(layout, Panel):
self.layout = self._expand_layout = layout(self._widget_box, **kwargs)
else:
raise ValueError('expand_layout expected to be a panel.layout.Panel'
'type or instance, found %s type.' %
type(layout).__name__)
self.param.watch(self._update_widgets, [
'object', 'parameters', 'display_threshold', 'expand_button',
'expand', 'expand_layout', 'widgets', 'show_labels', 'show_name'])
self._update_widgets()
def __repr__(self, depth=0):
cls = type(self).__name__
obj_cls = type(self.object).__name__
params = [] if self.object is None else list(self.object.param)
parameters = [k for k in params if k != 'name']
params = []
for p, v in sorted(self.get_param_values()):
if v is self.param[p].default: continue
elif v is None: continue
elif isinstance(v, string_types) and v == '': continue
elif p == 'object' or (p == 'name' and (v.startswith(obj_cls) or v.startswith(cls))): continue
elif p == 'parameters' and v == parameters: continue
try:
params.append('%s=%s' % (p, abbreviated_repr(v)))
except RuntimeError:
params.append('%s=%s' % (p, '...'))
obj = 'None' if self.object is None else '%s' % type(self.object).__name__
template = '{cls}({obj}, {params})' if params else '{cls}({obj})'
return template.format(cls=cls, params=', '.join(params), obj=obj)
#----------------------------------------------------------------
# Callback API
#----------------------------------------------------------------
def _synced_params(self):
ignored_params = ['name', 'default_layout']
return [p for p in Layoutable.param if p not in ignored_params]
def _update_widgets(self, *events):
parameters = []
for event in sorted(events, key=lambda x: x.name):
if event.name == 'object':
if isinstance(event.new, param.parameterized.Parameters):
self.object = object.cls if object.self is None else object.self
return
if event.new is None:
parameters = None
else:
parameters = [p for p in event.new.param if p != 'name']
if event.name == 'parameters':
parameters = None if event.new == [] else event.new
if parameters != [] and parameters != self.parameters:
self.parameters = parameters
return
for cb in list(self._callbacks):
if cb.inst in self._widget_box.objects:
cb.inst.param.unwatch(cb)
self._callbacks.remove(cb)
# Construct widgets
if self.object is None:
self._widgets = {}
else:
self._widgets = self._get_widgets()
widgets = [widget for p, widget in self._widgets.items()
if (self.object.param[p].precedence is None)
or (self.object.param[p].precedence >= self.display_threshold)]
self._widget_box.objects = widgets
if not (self.expand_button == False and not self.expand):
self._link_subobjects()
def _link_subobjects(self):
for pname, widget in self._widgets.items():
widgets = [widget] if isinstance(widget, Widget) else widget
if not any(is_parameterized(getattr(w, 'value', None)) or
any(is_parameterized(o) for o in getattr(w, 'options', []))
for w in widgets):
continue
if (isinstance(widgets, Row) and isinstance(widgets[1], Toggle)):
selector, toggle = (widgets[0], widgets[1])
else:
selector, toggle = (widget, None)
def toggle_pane(change, parameter=pname):
"Adds or removes subpanel from layout"
parameterized = getattr(self.object, parameter)
existing = [p for p in self._expand_layout.objects
if isinstance(p, Param) and
p.object in recursive_parameterized(parameterized)]
if not change.new:
self._expand_layout[:] = [
e for e in self._expand_layout.objects
if e not in existing
]
elif change.new:
kwargs = {k: v for k, v in self.get_param_values()
if k not in ['name', 'object', 'parameters']}
pane = Param(parameterized, name=parameterized.name,
**kwargs)
if isinstance(self._expand_layout, Tabs):
title = self.object.param[pname].label
pane = (title, pane)
self._expand_layout.append(pane)
def update_pane(change, parameter=pname):
"Adds or removes subpanel from layout"
layout = self._expand_layout
existing = [p for p in layout.objects if isinstance(p, Param)
and p.object is change.old]
if toggle:
toggle.disabled = not is_parameterized(change.new)
if not existing:
return
elif is_parameterized(change.new):
parameterized = change.new
kwargs = {k: v for k, v in self.get_param_values()
if k not in ['name', 'object', 'parameters']}
pane = Param(parameterized, name=parameterized.name,
**kwargs)
layout[layout.objects.index(existing[0])] = pane
else:
layout.pop(existing[0])
watchers = [selector.param.watch(update_pane, 'value')]
if toggle:
watchers.append(toggle.param.watch(toggle_pane, 'value'))
self._callbacks += watchers
if self.expand:
if self.expand_button:
toggle.value = True
else:
toggle_pane(namedtuple('Change', 'new')(True))
def widget(self, p_name):
"""Get widget for param_name"""
p_obj = self.object.param[p_name]
kw_widget = {}
if self.widgets is None or p_name not in self.widgets:
widget_class = self.widget_type(p_obj)
elif isinstance(self.widgets[p_name], dict):
if 'type' in self.widgets[p_name]:
widget_class = self.widgets[p_name].pop('type')
else:
widget_class = self.widget_type(p_obj)
kw_widget = self.widgets[p_name]
else:
widget_class = self.widgets[p_name]
value = getattr(self.object, p_name)
if not self.show_labels and not issubclass(widget_class, _ButtonBase):
label = ''
else:
label = p_obj.label
kw = dict(value=value, disabled=p_obj.constant, name=label)
# Update kwargs
kw.update(kw_widget)
if hasattr(p_obj, 'get_range'):
options = p_obj.get_range()
if not options and value is not None:
options = [value]
kw['options'] = options
if hasattr(p_obj, 'get_soft_bounds'):
bounds = p_obj.get_soft_bounds()
if bounds[0] is not None:
kw['start'] = bounds[0]
if bounds[1] is not None:
kw['end'] = bounds[1]
if ('start' not in kw or 'end' not in kw) and not issubclass(widget_class, LiteralInput):
widget_class = LiteralInput
if hasattr(widget_class, 'step') and getattr(p_obj, 'step', None):
kw['step'] = p_obj.step
kwargs = {k: v for k, v in kw.items() if k in widget_class.param}
if isinstance(widget_class, Widget):
widget = widget_class
else:
widget = widget_class(**kwargs)
watchers = self._callbacks
if isinstance(widget, Toggle):
pass
else:
def link_widget(change):
if p_name in self._updating:
return
try:
self._updating.append(p_name)
self.object.set_param(**{p_name: change.new})
finally:
self._updating.remove(p_name)
if isinstance(p_obj, param.Action):
def action(change):
value(self.object)
watcher = widget.param.watch(action, 'clicks')
else:
watcher = widget.param.watch(link_widget, 'value')
def link(change, watchers=[watcher]):
updates = {}
if change.what == 'constant':
updates['disabled'] = change.new
elif change.what == 'precedence':
if (change.new < self.display_threshold and
widget in self._widget_box.objects):
self._widget_box.pop(widget)
elif change.new >= self.display_threshold:
precedence = lambda k: self.object.param[k].precedence
params = self._ordered_params
if self.show_name:
params.insert(0, 'name')
widgets = []
for k in params:
if precedence(k) is None or precedence(k) >= self.display_threshold:
widgets.append(self._widgets[k])
self._widget_box.objects = widgets
return
elif change.what == 'objects':
updates['options'] = p_obj.get_range()
elif change.what == 'bounds':
start, end = p_obj.get_soft_bounds()
updates['start'] = start
updates['end'] = end
elif change.what == 'step':
updates['step'] = p_obj.step
elif change.what == 'label':
updates['name'] = p_obj.label
elif p_name in self._updating:
return
elif isinstance(p_obj, param.Action):
widget.param.unwatch(watchers[0])
def action(event):
change.new(self.object)
watchers[0] = widget.param.watch(action, 'clicks')
return
else:
updates['value'] = change.new
try:
self._updating.append(p_name)
widget.set_param(**updates)
finally:
self._updating.remove(p_name)
# Set up links to parameterized object
watchers.append(self.object.param.watch(link, p_name, 'constant'))
watchers.append(self.object.param.watch(link, p_name, 'precedence'))
watchers.append(self.object.param.watch(link, p_name, 'label'))
if hasattr(p_obj, 'get_range'):
watchers.append(self.object.param.watch(link, p_name, 'objects'))
if hasattr(p_obj, 'get_soft_bounds'):
watchers.append(self.object.param.watch(link, p_name, 'bounds'))
if 'step' in kw:
watchers.append(self.object.param.watch(link, p_name, 'step'))
watchers.append(self.object.param.watch(link, p_name))
options = kwargs.get('options', [])
if isinstance(options, dict):
options = options.values()
if ((is_parameterized(value) or any(is_parameterized(o) for o in options))
and (self.expand_button or (self.expand_button is None and not self.expand))):
widget.margin = (5, 0, 5, 10)
toggle = Toggle(name='\u22EE', button_type='primary',
disabled=not is_parameterized(value), max_height=30,
max_width=20, height_policy='fit', align='end',
margin=(0, 0, 5, 10))
widget.width = self._widget_box.width-60
return Row(widget, toggle, width_policy='max', margin=0)
else:
return widget
@property
def _ordered_params(self):
params = [(p, pobj) for p, pobj in self.object.param.objects('existing').items()
if p in self.parameters or p == 'name']
key_fn = lambda x: x[1].precedence if x[1].precedence is not None else self.default_precedence
sorted_precedence = sorted(params, key=key_fn)
filtered = [(k, p) for k, p in sorted_precedence]
groups = itertools.groupby(filtered, key=key_fn)
# Params preserve definition order in Python 3.6+
dict_ordered_py3 = (sys.version_info.major == 3 and sys.version_info.minor >= 6)
dict_ordered = dict_ordered_py3 or (sys.version_info.major > 3)
ordered_groups = [list(grp) if dict_ordered else sorted(grp) for (_, grp) in groups]
ordered_params = [el[0] for group in ordered_groups for el in group if el[0] != 'name']
return ordered_params
#----------------------------------------------------------------
# Model API
#----------------------------------------------------------------
def _get_widgets(self):
"""Return name,widget boxes for all parameters (i.e., a property sheet)"""
# Format name specially
if self.expand_layout is Tabs:
widgets = []
elif self.show_name:
name = param_name(self.object.name)
widgets = [('name', StaticText(value='<b>{0}</b>'.format(name)))]
else:
widgets = []
widgets += [(pname, self.widget(pname)) for pname in self._ordered_params]
return OrderedDict(widgets)
def _get_model(self, doc, root=None, parent=None, comm=None):
model = self.layout._get_model(doc, root, parent, comm)
self._models[root.ref['id']] = (model, parent)
return model
def _cleanup(self, root):
self.layout._cleanup(root)
super(Param, self)._cleanup(root)
#----------------------------------------------------------------
# Public API
#----------------------------------------------------------------
@classmethod
def applies(cls, obj):
return (is_parameterized(obj) or
isinstance(obj, param.parameterized.Parameters) or
(isinstance(obj, param.Parameter) and obj.owner is not None))
@classmethod
def widget_type(cls, pobj):
ptype = type(pobj)
for t in classlist(ptype)[::-1]:
if t in cls._mapping:
if isinstance(cls._mapping[t], types.FunctionType):
return cls._mapping[t](pobj)
return cls._mapping[t]
def get_root(self, doc=None, comm=None):
"""
Returns the root model and applies pre-processing hooks
Arguments
---------
doc: bokeh.Document
Bokeh document the bokeh model will be attached to.
comm: pyviz_comms.Comm
Optional pyviz_comms when working in notebook
Returns
-------
Returns the bokeh model corresponding to this panel object
"""
doc = doc or _curdoc()
root = self.layout.get_root(doc, comm)
ref = root.ref['id']
self._models[ref] = (root, None)
state._views[ref] = (self, root, doc, comm)
return root
class ParamMethod(ReplacementPane):
"""
ParamMethod panes wrap methods on parameterized classes and
rerenders the plot when any of the method's parameters change. By
default ParamMethod will watch all parameters on the class owning
the method or can be restricted to certain parameters by annotating
the method using the param.depends decorator. The method may
return any object which itself can be rendered as a Pane.
"""
def __init__(self, object=None, **params):
super(ParamMethod, self).__init__(object, **params)
self._link_object_params()
if object is not None:
self._update_inner(self._eval_function(object))
#----------------------------------------------------------------
# Callback API
#----------------------------------------------------------------
@classmethod
def _eval_function(self, function):
args, kwargs = (), {}
if hasattr(function, '_dinfo'):
arg_deps = function._dinfo['dependencies']
kw_deps = function._dinfo.get('kw', {})
if kw_deps or any(isinstance(d, param.Parameter) for d in arg_deps):
args = (getattr(dep.owner, dep.name) for dep in arg_deps)
kwargs = {n: getattr(dep.owner, dep.name) for n, dep in kw_deps.items()}
return function(*args, **kwargs)
def _update_pane(self, *events):
callbacks = []
for watcher in self._callbacks:
obj = watcher.inst if watcher.inst is None else watcher.cls
if obj is self:
callbacks.append(watcher)
continue
obj.param.unwatch(watcher)
self._callbacks = callbacks
self._link_object_params()
if object is not None:
self._update_inner(self._eval_function(self.object))
def _link_object_params(self):
parameterized = get_method_owner(self.object)
params = parameterized.param.params_depended_on(self.object.__name__)
deps = params
def update_pane(*events):
# Update nested dependencies if parameterized object events
if any(is_parameterized(event.new) for event in events):
new_deps = parameterized.param.params_depended_on(self.object.__name__)
for p in list(deps):
if p in new_deps: continue
watchers = self._callbacks
for w in list(watchers):
if (w.inst is p.inst and w.cls is p.cls and
p.name in w.parameter_names):
obj = p.cls if p.inst is None else p.inst
obj.param.unwatch(w)
watchers.pop(watchers.index(w))
deps.pop(deps.index(p))
new_deps = [dep for dep in new_deps if dep not in deps]
for _, params in full_groupby(new_deps, lambda x: (x.inst or x.cls, x.what)):
p = params[0]
pobj = p.cls if p.inst is None else p.inst
ps = [_p.name for _p in params]
watcher = pobj.param.watch(update_pane, ps, p.what)
self._callbacks.append(watcher)
for p in params:
deps.append(p)
new_object = self._eval_function(self.object)
self._update_inner(new_object)
for _, params in full_groupby(params, lambda x: (x.inst or x.cls, x.what)):
p = params[0]
pobj = (p.inst or p.cls)
ps = [_p.name for _p in params]
watcher = pobj.param.watch(update_pane, ps, p.what)
self._callbacks.append(watcher)
#----------------------------------------------------------------
# Public API
#----------------------------------------------------------------
@classmethod
def applies(cls, obj):
return inspect.ismethod(obj) and isinstance(get_method_owner(obj), param.Parameterized)
class ParamFunction(ParamMethod):
"""
ParamFunction panes wrap functions decorated with the param.depends
decorator and rerenders the output when any of the function's
dependencies change. This allows building reactive components into
a Panel which depend on other parameters, e.g. tying the value of
a widget to some other output.
"""
priority = 0.6
def _replace_pane(self, *args):
new_object = self._eval_function(self.object)
self._update_inner(new_object)
def _link_object_params(self):
deps = self.object._dinfo
dep_params = list(deps['dependencies']) + list(deps.get('kw', {}).values())
for p in dep_params:
watcher = p.owner.param.watch(self._replace_pane, p.name)
self._callbacks.append(watcher)
#----------------------------------------------------------------
# Public API
#----------------------------------------------------------------
@classmethod
def applies(cls, obj):
return isinstance(obj, types.FunctionType) and hasattr(obj, '_dinfo')
class JSONInit(param.Parameterized):
"""
Callable that can be passed to Widgets.initializer to set Parameter
values using JSON. There are three approaches that may be used:
1. If the json_file argument is specified, this takes precedence.
2. The JSON file path can be specified via an environment variable.
3. The JSON can be read directly from an environment variable.
Here is an easy example of setting such an environment variable on
the commandline:
PARAM_JSON_INIT='{"p1":5}' jupyter notebook
This addresses any JSONInit instances that are inspecting the
default environment variable called PARAM_JSON_INIT, instructing it to set
the 'p1' parameter to 5.
"""
varname = param.String(default='PARAM_JSON_INIT', doc="""
The name of the environment variable containing the JSON
specification.""")
target = param.String(default=None, doc="""
Optional key in the JSON specification dictionary containing the
desired parameter values.""")
json_file = param.String(default=None, doc="""
Optional path to a JSON file containing the parameter settings.""")
def __call__(self, parameterized):
warnobj = param.main if isinstance(parameterized, type) else parameterized
param_class = (parameterized if isinstance(parameterized, type)
else parameterized.__class__)
target = self.target if self.target is not None else param_class.__name__
env_var = os.environ.get(self.varname, None)
if env_var is None and self.json_file is None: return
if self.json_file or env_var.endswith('.json'):
try:
fname = self.json_file if self.json_file else env_var
spec = json.load(open(os.path.abspath(fname), 'r'))
except:
warnobj.warning('Could not load JSON file %r' % spec)
else:
spec = json.loads(env_var)
if not isinstance(spec, dict):
warnobj.warning('JSON parameter specification must be a dictionary.')
return
if target in spec:
params = spec[target]
else:
params = spec
for name, value in params.items():
try:
parameterized.set_param(**{name:value})
except ValueError as e:
warnobj.warning(str(e))