1 | #!/usr/bin/env python |
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2 | |
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3 | import unittest |
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4 | from math import sqrt |
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5 | |
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6 | from sparse import * |
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7 | import numpy as num |
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8 | |
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9 | |
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10 | class Test_Sparse(unittest.TestCase): |
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11 | |
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12 | def setUp(self): |
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13 | pass |
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14 | |
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15 | def tearDown(self): |
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16 | pass |
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17 | |
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18 | def test_init1(Self): |
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19 | """Test initialisation from dimensions |
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20 | """ |
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21 | A = Sparse(3,3) |
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22 | A[1,1] = 4 |
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23 | |
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24 | for i in range(3): |
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25 | for j in range(3): |
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26 | if i==1 and j==1: |
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27 | assert A[i,j] == 4.0 |
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28 | else: |
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29 | assert A[i,j] == 0.0 |
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30 | |
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31 | def test_init2(Self): |
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32 | """Test initialisation from dense matrix |
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33 | """ |
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34 | |
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35 | A = Sparse(4,3) |
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36 | A[1,1] = 4 |
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37 | A[2,0] = 6 |
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38 | A[0,1] = 13 |
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39 | A[0,2] = -6 |
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40 | A[2,2] = 1 |
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41 | |
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42 | B = A.todense() |
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43 | |
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44 | C = Sparse(B) |
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45 | |
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46 | assert num.allclose(C.todense(), B) |
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47 | |
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48 | |
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49 | def test_dense(self): |
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50 | A = Sparse(4,3) |
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51 | A[1,1] = 4 |
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52 | |
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53 | assert num.allclose(A.todense(), [[0,0,0], [0,4,0], [0,0,0], [0,0,0]]) |
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54 | |
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55 | |
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56 | def test_reset_to_zero_possible(self): |
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57 | """Test that nonzero element can be reset to zero |
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58 | (This was not possible when we tried sparse from scipy). |
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59 | """ |
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60 | |
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61 | A = Sparse(3,3) |
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62 | A[1,1] = 4 |
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63 | A[1,1] = 0 |
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64 | |
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65 | assert len(A) == 0 |
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66 | assert num.allclose(A.todense(), [[0,0,0], [0,0,0], [0,0,0]]) |
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67 | |
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68 | #Set an existing zero element to zero |
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69 | A[1,2] = 0 |
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70 | assert len(A) == 0 |
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71 | assert num.allclose(A.todense(), [[0,0,0], [0,0,0], [0,0,0]]) |
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72 | |
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73 | def test_sparse_multiplication_vector(self): |
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74 | A = Sparse(3,3) |
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75 | |
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76 | A[0,0] = 3 |
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77 | A[1,1] = 2 |
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78 | A[1,2] = 2 |
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79 | A[2,2] = 1 |
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80 | |
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81 | #Right hand side vector |
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82 | v = [2,3,4] |
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83 | |
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84 | u = A*v |
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85 | assert num.allclose(u, [6,14,4]) |
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86 | |
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87 | #Right hand side column |
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88 | v = num.array([[2,4],[3,4],[4,4]]) |
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89 | |
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90 | u = A*v[:,0] |
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91 | assert num.allclose(u, [6,14,4]) |
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92 | |
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93 | u = A*v[:,1] |
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94 | assert num.allclose(u, [12,16,4]) |
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95 | |
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96 | |
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97 | def test_sparse_multiplication_matrix(self): |
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98 | A = Sparse(3,3) |
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99 | |
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100 | A[0,0] = 3 |
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101 | A[1,1] = 2 |
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102 | A[1,2] = 2 |
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103 | A[2,2] = 1 |
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104 | |
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105 | #Right hand side matrix |
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106 | v = num.array([[2,4],[3,4],[4,4]]) |
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107 | |
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108 | u = A*v |
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109 | assert num.allclose(u, [[6,12], [14,16], [4,4]]) |
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110 | |
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111 | |
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112 | |
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113 | def test_sparse_transpose_multiplication(self): |
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114 | A = Sparse(3,3) |
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115 | |
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116 | A[0,0] = 3 |
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117 | A[1,1] = 2 |
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118 | A[1,2] = 2 |
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119 | A[2,2] = 1 |
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120 | |
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121 | #Right hand side vector |
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122 | v = [2,3,4] |
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123 | |
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124 | u = A.trans_mult(v) |
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125 | assert num.allclose(u, [6,6,10]) |
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126 | |
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127 | |
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128 | def test_scalar_multiplication(self): |
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129 | """Test method __rmul__ |
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130 | """ |
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131 | |
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132 | A = Sparse(3,3) |
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133 | |
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134 | A[0,0] = 3 |
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135 | A[1,1] = 2 |
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136 | A[1,2] = 2 |
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137 | A[2,2] = 1 |
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138 | |
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139 | B = 3*A |
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140 | assert num.allclose(B.todense(), 3*A.todense()) |
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141 | |
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142 | B = A*3 |
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143 | assert num.allclose(B.todense(), 3*A.todense()) |
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144 | |
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145 | try: |
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146 | B = 'a'*A |
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147 | except TypeError: |
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148 | pass |
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149 | else: |
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150 | raise 'Should have failed' |
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151 | |
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152 | def test_sparse_addition(self): |
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153 | """ Test sparse addition with dok format |
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154 | """ |
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155 | |
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156 | A = Sparse(3,3) |
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157 | |
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158 | A[0,0] = 3 |
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159 | A[1,1] = 2 |
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160 | A[1,2] = 2 |
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161 | A[2,2] = 1 |
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162 | |
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163 | |
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164 | B = 3*A |
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165 | B[1,0] = 2 |
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166 | |
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167 | C = A+B |
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168 | |
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169 | assert num.allclose(C.todense(), [[12,0,0], [2,8,8], [0,0,4]]) |
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170 | |
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171 | def test_sparse_tocsr(self): |
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172 | """ Test conversion to csr format |
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173 | """ |
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174 | |
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175 | A = Sparse(4,3) |
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176 | |
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177 | A[0,0] = 3 |
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178 | A[1,1] = 2 |
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179 | A[1,2] = 2 |
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180 | A[2,2] = 1 |
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181 | A[0,2] = 4 |
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182 | A[2,0] = 5 |
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183 | |
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184 | #print ' ' |
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185 | #print A.todense() |
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186 | |
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187 | B = Sparse_CSR(A) |
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188 | |
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189 | #print B.todense() |
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190 | |
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191 | C = [1, 2, 3] |
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192 | |
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193 | assert num.allclose(B*C, [15.0, 10.0 ,8.0, 0.0]) |
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194 | |
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195 | C2 = [[1,2],[2,4],[3,6]] |
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196 | |
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197 | #print B*C2 |
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198 | |
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199 | assert num.allclose(B*C2, [[15.0, 30.0],[10.0, 20.0],[8.0, 16.0],[0.0, 0.0]]) |
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200 | |
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201 | |
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202 | |
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203 | #------------------------------------------------------------- |
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204 | if __name__ == "__main__": |
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205 | suite = unittest.makeSuite(Test_Sparse, 'test') |
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206 | runner = unittest.TextTestRunner() |
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207 | runner.run(suite) |
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