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@@ -13,68 +13,56 b' Authors' | |||
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13 | 13 | # the file COPYING, distributed as part of this software. |
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14 | 14 | #***************************************************************************** |
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15 | 15 | |
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16 | import __builtin__ | |
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17 | 16 | import re |
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18 | 17 | import types |
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19 | 18 | |
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20 | 19 | from IPython.utils.dir2 import dir2 |
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21 | 20 | |
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22 |
def create_typestr2type_dicts(dont_include_in_type2type |
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23 |
"""Return dictionaries mapping lower case typename |
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24 | the types package, and vice versa.""" | |
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25 | typenamelist=[] | |
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26 | for tname in dir(types): | |
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27 | if tname[-4:]=="Type": | |
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28 | typenamelist.append(tname) | |
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29 | typestr2type={} | |
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30 | type2typestr={} | |
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21 | def create_typestr2type_dicts(dont_include_in_type2typestr=["lambda"]): | |
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22 | """Return dictionaries mapping lower case typename (e.g. 'tuple) to type | |
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23 | objects from the types package, and vice versa.""" | |
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24 | typenamelist = [tname for tname in dir(types) if tname.endswith("Type")] | |
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25 | typestr2type, type2typestr = {}, {} | |
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26 | ||
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31 | 27 | for tname in typenamelist: |
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32 | name=tname[:-4].lower() | |
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33 | obj=getattr(types,tname) | |
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34 |
typestr2type[name]= |
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35 |
if name in dont_include_in_type2type |
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36 | type2typestr[obj]=name | |
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37 | return typestr2type,type2typestr | |
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28 | name = tname[:-4].lower() # Cut 'Type' off the end of the name | |
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29 | obj = getattr(types, tname) | |
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30 | typestr2type[name] = obj | |
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31 | if name not in dont_include_in_type2typestr: | |
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32 | type2typestr[obj] = name | |
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33 | return typestr2type, type2typestr | |
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38 | 34 | |
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39 | typestr2type,type2typestr=create_typestr2type_dicts() | |
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35 | typestr2type, type2typestr = create_typestr2type_dicts() | |
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40 | 36 | |
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41 | def is_type(obj,typestr_or_type): | |
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42 |
"""is_type(obj,typestr_or_type) verifies if obj is of a certain type |
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43 | group of types takes strings as parameters of the for 'tuple'<->TupleType | |
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44 | 'all' matches all types. TODO: Should be extended for choosing more than | |
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45 | one type | |
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46 | """ | |
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37 | def is_type(obj, typestr_or_type): | |
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38 | """is_type(obj, typestr_or_type) verifies if obj is of a certain type. It | |
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39 | can take strings or actual python types for the second argument, i.e. | |
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40 | 'tuple'<->TupleType. 'all' matches all types. | |
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41 | ||
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42 | TODO: Should be extended for choosing more than one type.""" | |
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47 | 43 | if typestr_or_type=="all": |
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48 | 44 | return True |
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49 | if type(typestr_or_type)==types.TypeType: | |
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50 | test_type=typestr_or_type | |
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45 | if type(typestr_or_type) == types.TypeType: | |
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46 | test_type = typestr_or_type | |
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51 | 47 | else: |
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52 | test_type=typestr2type.get(typestr_or_type,False) | |
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48 | test_type = typestr2type.get(typestr_or_type, False) | |
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53 | 49 | if test_type: |
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54 | return isinstance(obj,test_type) | |
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55 |
else |
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56 | return False | |
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50 | return isinstance(obj, test_type) | |
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51 | return False | |
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57 | 52 | |
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58 | 53 | def show_hidden(str,show_all=False): |
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59 | 54 | """Return true for strings starting with single _ if show_all is true.""" |
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60 | 55 | return show_all or str.startswith("__") or not str.startswith("_") |
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61 | 56 | |
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62 |
class NameSpace( |
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57 | class NameSpace(dict): | |
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63 | 58 | """NameSpace holds the dictionary for a namespace and implements filtering |
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64 | 59 | on name and types""" |
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65 | def __init__(self, ns_dict, name_pattern="*", type_pattern="all", | |
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66 | ignore_case=True, show_all=True): | |
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67 | self.show_all = show_all #Hide names beginning with single _ | |
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68 | self.name_pattern = name_pattern | |
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69 | self.type_pattern = type_pattern | |
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70 | self.ignore_case = ignore_case | |
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71 | self._ns = ns_dict | |
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72 | ||
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60 | ||
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73 | 61 | @classmethod |
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74 | 62 | def from_object(cls, obj, *args, **kwargs): |
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75 | 63 | """Instantiate a namespace by constructing a dictionary of an object's |
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76 | 64 | attributes. A class method, returns a new NameSpace instance.""" |
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77 |
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65 | ns = cls() | |
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78 | 66 | for key in dir2(obj): |
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79 | 67 | if isinstance(key, basestring): |
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80 | 68 | # This seemingly unnecessary try/except is actually needed |
@@ -84,81 +72,63 b' class NameSpace(object):' | |||
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84 | 72 | # object's dictionary. Properties can actually do the same |
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85 | 73 | # thing. In particular, Traits use this pattern |
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86 | 74 | try: |
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87 |
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75 | ns[key] = getattr(obj,key) | |
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88 | 76 | except AttributeError: |
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89 | 77 | pass |
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90 | return cls(attrs, *args, **kwargs) | |
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91 | ||
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92 | def get_ns(self): | |
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93 | """Return name space dictionary with objects matching type and name patterns.""" | |
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94 | return self.filter(self.name_pattern,self.type_pattern) | |
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95 | ns=property(get_ns) | |
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96 | ||
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97 | def get_ns_names(self): | |
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98 | """Return list of object names in namespace that match the patterns.""" | |
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99 | return self.ns.keys() | |
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100 | ns_names=property(get_ns_names,doc="List of objects in name space that " | |
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101 | "match the type and name patterns.") | |
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78 | return ns | |
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102 | 79 | |
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103 |
def filter(self,name_pattern,type_pattern |
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104 | """Return dictionary of filtered namespace.""" | |
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105 | def glob_filter(lista,name_pattern,hidehidden,ignore_case): | |
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106 | """Return list of elements in lista that match pattern.""" | |
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107 |
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108 |
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109 |
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110 |
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111 |
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112 | result=[x for x in lista if reg.match(x) and show_hidden(x,hidehidden)] | |
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113 | return result | |
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114 | ns=self._ns | |
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115 | #Filter namespace by the name_pattern | |
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116 | all=[(x,ns[x]) for x in glob_filter(ns.keys(),name_pattern, | |
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117 | self.show_all,self.ignore_case)] | |
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118 | #Filter namespace by type_pattern | |
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119 | all=[(key,obj) for key,obj in all if is_type(obj,type_pattern)] | |
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120 | all=dict(all) | |
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121 | return all | |
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122 | ||
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123 | #TODO: Implement dictionary like access to filtered name space? | |
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80 | def filter(self, name_pattern="*", type_pattern="all", ignore_case=True, | |
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81 | show_all=True): | |
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82 | """Return a dictionary of the namespace filtered by regex pattern and | |
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83 | item type.""" | |
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84 | pattern=name_pattern.replace("*",".*").replace("?",".") | |
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85 | if ignore_case: | |
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86 | reg=re.compile(pattern+"$",re.I) | |
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87 | else: | |
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88 | reg=re.compile(pattern+"$") | |
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89 | ||
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90 | return dict((key,obj) for key,obj in self.iteritems() if all((\ | |
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91 | reg.match(key), # Matches pattern | |
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92 | show_hidden(key, show_all), # Not _hidden | |
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93 | is_type(obj, type_pattern) )) ) # Correct type | |
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124 | 94 | |
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125 | 95 | def list_namespace(namespace,type_pattern,filter,ignore_case=False,show_all=False): |
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126 | 96 | """Return dictionary of all objects in a namespace dictionary that match |
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127 | 97 | type_pattern and filter.""" |
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128 | 98 | pattern_list=filter.split(".") |
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129 | if len(pattern_list)==1: | |
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130 | ns=NameSpace(namespace,name_pattern=pattern_list[0],type_pattern=type_pattern, | |
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131 | ignore_case=ignore_case,show_all=show_all) | |
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132 | return ns.ns | |
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99 | ns = NameSpace(namespace) | |
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100 | if len(pattern_list) == 1: | |
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101 | return ns.filter(name_pattern=pattern_list[0], type_pattern=type_pattern, | |
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102 | ignore_case=ignore_case, show_all=show_all) | |
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133 | 103 | else: |
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134 | 104 | # This is where we can change if all objects should be searched or |
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135 | 105 | # only modules. Just change the type_pattern to module to search only |
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136 | 106 | # modules |
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137 |
ns |
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138 | ignore_case=ignore_case,show_all=show_all) | |
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139 | res={} | |
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140 |
for name,obj in |
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107 | filtered = ns.filter(name_pattern=pattern_list[0], type_pattern="all", | |
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108 | ignore_case=ignore_case, show_all=show_all) | |
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109 | results = {} | |
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110 | for name, obj in filtered.iteritems(): | |
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141 | 111 | ns = list_object_namespace(obj, type_pattern, pattern_list[1:], |
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142 | 112 | ignore_case=ignore_case, show_all=show_all) |
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143 | 113 | for inner_name, inner_obj in ns.iteritems(): |
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144 | res["%s.%s"%(name,inner_name)]=inner_obj | |
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145 | return res | |
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114 | results["%s.%s"%(name,inner_name)] = inner_obj | |
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115 | return results | |
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146 | 116 | |
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147 | 117 | def list_object_namespace(ns_obj, type_pattern, pattern_list, ignore_case=False, |
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148 | 118 | show_all=False): |
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149 | 119 | """Return dictionary of all attributes of an object which match type_pattern |
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150 | and filter.""" | |
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151 | if len(pattern_list)==1: | |
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152 | ns=NameSpace.from_object(ns_obj, name_pattern=pattern_list[0], | |
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153 | type_pattern=type_pattern, ignore_case=ignore_case, show_all=show_all) | |
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154 | return ns.ns | |
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120 | and filter (pattern_list).""" | |
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121 | ns = NameSpace.from_object(ns_obj) | |
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122 | if len(pattern_list) == 1: | |
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123 | return ns.filter(name_pattern=pattern_list[0], type_pattern=type_pattern, | |
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124 | ignore_case=ignore_case, show_all=show_all) | |
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155 | 125 | else: |
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156 | ns=NameSpace.from_object(ns_obj, name_pattern=pattern_list[0], | |
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157 |
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158 | res={} | |
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159 |
for name,obj in |
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160 | ns=list_object_namespace(obj, type_pattern, pattern_list[1:], | |
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126 | filtered = ns.filter(name_pattern=pattern_list[0], type_pattern="all", | |
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127 | ignore_case=ignore_case, show_all=show_all) | |
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128 | results = {} | |
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129 | for name, obj in filtered.iteritems(): | |
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130 | ns = list_object_namespace(obj, type_pattern, pattern_list[1:], | |
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161 | 131 | ignore_case=ignore_case, show_all=show_all) |
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162 | 132 | for inner_name,inner_obj in ns.iteritems(): |
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163 | res["%s.%s"%(name,inner_name)]=inner_obj | |
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164 | return res | |
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133 | results["%s.%s"%(name,inner_name)] = inner_obj | |
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134 | return results |
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