Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/algorithms/tests/test_graphical.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import pytest |
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2 import networkx as nx |
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3 |
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4 |
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5 def test_valid_degree_sequence1(): |
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6 n = 100 |
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7 p = 0.3 |
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8 for i in range(10): |
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9 G = nx.erdos_renyi_graph(n, p) |
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10 deg = (d for n, d in G.degree()) |
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11 assert nx.is_graphical(deg, method="eg") |
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12 assert nx.is_graphical(deg, method="hh") |
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13 |
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14 |
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15 def test_valid_degree_sequence2(): |
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16 n = 100 |
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17 for i in range(10): |
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18 G = nx.barabasi_albert_graph(n, 1) |
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19 deg = (d for n, d in G.degree()) |
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20 assert nx.is_graphical(deg, method="eg") |
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21 assert nx.is_graphical(deg, method="hh") |
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22 |
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23 |
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24 def test_string_input(): |
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25 pytest.raises(nx.NetworkXException, nx.is_graphical, [], "foo") |
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26 pytest.raises(nx.NetworkXException, nx.is_graphical, ["red"], "hh") |
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27 pytest.raises(nx.NetworkXException, nx.is_graphical, ["red"], "eg") |
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28 |
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29 |
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30 def test_non_integer_input(): |
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31 pytest.raises(nx.NetworkXException, nx.is_graphical, [72.5], "eg") |
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32 pytest.raises(nx.NetworkXException, nx.is_graphical, [72.5], "hh") |
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33 |
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34 |
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35 def test_negative_input(): |
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36 assert not nx.is_graphical([-1], "hh") |
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37 assert not nx.is_graphical([-1], "eg") |
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38 |
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39 |
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40 class TestAtlas: |
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41 @classmethod |
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42 def setup_class(cls): |
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43 global atlas |
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44 # import platform |
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45 # if platform.python_implementation() == 'Jython': |
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46 # raise SkipTest('graph atlas not available under Jython.') |
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47 import networkx.generators.atlas as atlas |
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48 |
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49 cls.GAG = atlas.graph_atlas_g() |
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50 |
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51 def test_atlas(self): |
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52 for graph in self.GAG: |
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53 deg = (d for n, d in graph.degree()) |
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54 assert nx.is_graphical(deg, method="eg") |
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55 assert nx.is_graphical(deg, method="hh") |
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56 |
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57 |
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58 def test_small_graph_true(): |
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59 z = [5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] |
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60 assert nx.is_graphical(z, method="hh") |
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61 assert nx.is_graphical(z, method="eg") |
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62 z = [10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2] |
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63 assert nx.is_graphical(z, method="hh") |
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64 assert nx.is_graphical(z, method="eg") |
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65 z = [1, 1, 1, 1, 1, 2, 2, 2, 3, 4] |
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66 assert nx.is_graphical(z, method="hh") |
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67 assert nx.is_graphical(z, method="eg") |
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68 |
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69 |
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70 def test_small_graph_false(): |
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71 z = [1000, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] |
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72 assert not nx.is_graphical(z, method="hh") |
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73 assert not nx.is_graphical(z, method="eg") |
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74 z = [6, 5, 4, 4, 2, 1, 1, 1] |
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75 assert not nx.is_graphical(z, method="hh") |
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76 assert not nx.is_graphical(z, method="eg") |
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77 z = [1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 4] |
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78 assert not nx.is_graphical(z, method="hh") |
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79 assert not nx.is_graphical(z, method="eg") |
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80 |
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81 |
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82 def test_directed_degree_sequence(): |
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83 # Test a range of valid directed degree sequences |
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84 n, r = 100, 10 |
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85 p = 1.0 / r |
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86 for i in range(r): |
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87 G = nx.erdos_renyi_graph(n, p * (i + 1), None, True) |
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88 din = (d for n, d in G.in_degree()) |
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89 dout = (d for n, d in G.out_degree()) |
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90 assert nx.is_digraphical(din, dout) |
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91 |
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92 |
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93 def test_small_directed_sequences(): |
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94 dout = [5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] |
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95 din = [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] |
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96 assert nx.is_digraphical(din, dout) |
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97 # Test nongraphical directed sequence |
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98 dout = [1000, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] |
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99 din = [103, 102, 102, 102, 102, 102, 102, 102, 102, 102] |
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100 assert not nx.is_digraphical(din, dout) |
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101 # Test digraphical small sequence |
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102 dout = [1, 1, 1, 1, 1, 2, 2, 2, 3, 4] |
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103 din = [2, 2, 2, 2, 2, 2, 2, 2, 1, 1] |
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104 assert nx.is_digraphical(din, dout) |
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105 # Test nonmatching sum |
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106 din = [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] |
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107 assert not nx.is_digraphical(din, dout) |
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108 # Test for negative integer in sequence |
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109 din = [2, 2, 2, -2, 2, 2, 2, 2, 1, 1, 4] |
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110 assert not nx.is_digraphical(din, dout) |
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111 # Test for noninteger |
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112 din = dout = [1, 1, 1.1, 1] |
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113 assert not nx.is_digraphical(din, dout) |
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114 din = dout = [1, 1, "rer", 1] |
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115 assert not nx.is_digraphical(din, dout) |
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116 |
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117 |
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118 def test_multi_sequence(): |
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119 # Test nongraphical multi sequence |
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120 seq = [1000, 3, 3, 3, 3, 2, 2, 2, 1, 1] |
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121 assert not nx.is_multigraphical(seq) |
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122 # Test small graphical multi sequence |
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123 seq = [6, 5, 4, 4, 2, 1, 1, 1] |
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124 assert nx.is_multigraphical(seq) |
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125 # Test for negative integer in sequence |
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126 seq = [6, 5, 4, -4, 2, 1, 1, 1] |
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127 assert not nx.is_multigraphical(seq) |
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128 # Test for sequence with odd sum |
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129 seq = [1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 4] |
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130 assert not nx.is_multigraphical(seq) |
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131 # Test for noninteger |
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132 seq = [1, 1, 1.1, 1] |
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133 assert not nx.is_multigraphical(seq) |
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134 seq = [1, 1, "rer", 1] |
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135 assert not nx.is_multigraphical(seq) |
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136 |
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137 |
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138 def test_pseudo_sequence(): |
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139 # Test small valid pseudo sequence |
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140 seq = [1000, 3, 3, 3, 3, 2, 2, 2, 1, 1] |
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141 assert nx.is_pseudographical(seq) |
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142 # Test for sequence with odd sum |
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143 seq = [1000, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] |
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144 assert not nx.is_pseudographical(seq) |
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145 # Test for negative integer in sequence |
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146 seq = [1000, 3, 3, 3, 3, 2, 2, -2, 1, 1] |
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147 assert not nx.is_pseudographical(seq) |
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148 # Test for noninteger |
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149 seq = [1, 1, 1.1, 1] |
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150 assert not nx.is_pseudographical(seq) |
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151 seq = [1, 1, "rer", 1] |
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152 assert not nx.is_pseudographical(seq) |
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153 |
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154 |
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155 def test_numpy_degree_sequence(): |
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156 numpy = pytest.importorskip("numpy") |
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157 ds = numpy.array([1, 2, 2, 2, 1], dtype=numpy.int64) |
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158 assert nx.is_graphical(ds, "eg") |
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159 assert nx.is_graphical(ds, "hh") |
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160 ds = numpy.array([1, 2, 2, 2, 1], dtype=numpy.float64) |
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161 assert nx.is_graphical(ds, "eg") |
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162 assert nx.is_graphical(ds, "hh") |
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163 ds = numpy.array([1.1, 2, 2, 2, 1], dtype=numpy.float64) |
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164 pytest.raises(nx.NetworkXException, nx.is_graphical, ds, "eg") |
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165 pytest.raises(nx.NetworkXException, nx.is_graphical, ds, "hh") |