Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_pprint.py @ 39042:c02fa187e0f4 legacy-trunk

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Part of SF patch #1484695. This removes dead code. The chksum was already verified in .frombuf() on the lines above. If there was a problem an exception is raised, so there was no way this condition could have been true.
author Neal Norwitz <nnorwitz@gmail.com>
date Mon, 10 Jul 2006 00:23:17 +0000
parents 2eb8be0f8731
children 757a7f31e460 1c26505c1de6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import pprint
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2 import test.test_support
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3 import unittest
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4
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5 try:
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6 uni = unicode
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7 except NameError:
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8 def uni(x):
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9 return x
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10
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11 # list, tuple and dict subclasses that do or don't overwrite __repr__
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12 class list2(list):
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13 pass
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14
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15 class list3(list):
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16 def __repr__(self):
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17 return list.__repr__(self)
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18
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19 class tuple2(tuple):
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20 pass
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21
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22 class tuple3(tuple):
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23 def __repr__(self):
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24 return tuple.__repr__(self)
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25
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26 class dict2(dict):
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27 pass
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28
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29 class dict3(dict):
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30 def __repr__(self):
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31 return dict.__repr__(self)
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32
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33 class QueryTestCase(unittest.TestCase):
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34
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35 def setUp(self):
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36 self.a = range(100)
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37 self.b = range(200)
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38 self.a[-12] = self.b
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39
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40 def test_basic(self):
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41 # Verify .isrecursive() and .isreadable() w/o recursion
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42 verify = self.assert_
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43 pp = pprint.PrettyPrinter()
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44 for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, uni("yaddayadda"),
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45 self.a, self.b):
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46 # module-level convenience functions
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47 verify(not pprint.isrecursive(safe),
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48 "expected not isrecursive for %r" % (safe,))
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49 verify(pprint.isreadable(safe),
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50 "expected isreadable for %r" % (safe,))
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51 # PrettyPrinter methods
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52 verify(not pp.isrecursive(safe),
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53 "expected not isrecursive for %r" % (safe,))
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54 verify(pp.isreadable(safe),
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55 "expected isreadable for %r" % (safe,))
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56
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57 def test_knotted(self):
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58 # Verify .isrecursive() and .isreadable() w/ recursion
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59 # Tie a knot.
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60 self.b[67] = self.a
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61 # Messy dict.
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62 self.d = {}
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63 self.d[0] = self.d[1] = self.d[2] = self.d
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64
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65 verify = self.assert_
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66 pp = pprint.PrettyPrinter()
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67
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68 for icky in self.a, self.b, self.d, (self.d, self.d):
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69 verify(pprint.isrecursive(icky), "expected isrecursive")
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70 verify(not pprint.isreadable(icky), "expected not isreadable")
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71 verify(pp.isrecursive(icky), "expected isrecursive")
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72 verify(not pp.isreadable(icky), "expected not isreadable")
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73
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74 # Break the cycles.
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75 self.d.clear()
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76 del self.a[:]
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77 del self.b[:]
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78
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79 for safe in self.a, self.b, self.d, (self.d, self.d):
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80 # module-level convenience functions
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81 verify(not pprint.isrecursive(safe),
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82 "expected not isrecursive for %r" % (safe,))
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83 verify(pprint.isreadable(safe),
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84 "expected isreadable for %r" % (safe,))
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85 # PrettyPrinter methods
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86 verify(not pp.isrecursive(safe),
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87 "expected not isrecursive for %r" % (safe,))
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88 verify(pp.isreadable(safe),
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89 "expected isreadable for %r" % (safe,))
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90
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91 def test_unreadable(self):
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92 # Not recursive but not readable anyway
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93 verify = self.assert_
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94 pp = pprint.PrettyPrinter()
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95 for unreadable in type(3), pprint, pprint.isrecursive:
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96 # module-level convenience functions
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97 verify(not pprint.isrecursive(unreadable),
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98 "expected not isrecursive for %r" % (unreadable,))
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99 verify(not pprint.isreadable(unreadable),
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100 "expected not isreadable for %r" % (unreadable,))
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101 # PrettyPrinter methods
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102 verify(not pp.isrecursive(unreadable),
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103 "expected not isrecursive for %r" % (unreadable,))
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104 verify(not pp.isreadable(unreadable),
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105 "expected not isreadable for %r" % (unreadable,))
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106
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107 def test_same_as_repr(self):
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108 # Simple objects, small containers and classes that overwrite __repr__
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109 # For those the result should be the same as repr().
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110 # Ahem. The docs don't say anything about that -- this appears to
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111 # be testing an implementation quirk. Starting in Python 2.5, it's
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112 # not true for dicts: pprint always sorts dicts by key now; before,
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113 # it sorted a dict display if and only if the display required
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114 # multiple lines. For that reason, dicts with more than one element
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115 # aren't tested here.
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116 verify = self.assert_
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117 for simple in (0, 0L, 0+0j, 0.0, "", uni(""),
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118 (), tuple2(), tuple3(),
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119 [], list2(), list3(),
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120 {}, dict2(), dict3(),
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121 verify, pprint,
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122 -6, -6L, -6-6j, -1.5, "x", uni("x"), (3,), [3], {3: 6},
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123 (1,2), [3,4], {5: 6, 7: 8},
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124 tuple2((1,2)), tuple3((1,2)), tuple3(range(100)),
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125 [3,4], list2([3,4]), list3([3,4]), list3(range(100)),
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126 {5: 6, 7: 8}, dict2({5: 6}), dict3({5: 6}),
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127 range(10, -11, -1)
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128 ):
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129 native = repr(simple)
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130 for function in "pformat", "saferepr":
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131 f = getattr(pprint, function)
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132 got = f(simple)
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133 verify(native == got, "expected %s got %s from pprint.%s" %
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134 (native, got, function))
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135
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136 def test_basic_line_wrap(self):
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137 # verify basic line-wrapping operation
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138 o = {'RPM_cal': 0,
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139 'RPM_cal2': 48059,
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140 'Speed_cal': 0,
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141 'controldesk_runtime_us': 0,
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142 'main_code_runtime_us': 0,
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143 'read_io_runtime_us': 0,
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144 'write_io_runtime_us': 43690}
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145 exp = """\
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146 {'RPM_cal': 0,
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147 'RPM_cal2': 48059,
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148 'Speed_cal': 0,
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149 'controldesk_runtime_us': 0,
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150 'main_code_runtime_us': 0,
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151 'read_io_runtime_us': 0,
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152 'write_io_runtime_us': 43690}"""
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153 for type in [dict, dict2]:
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154 self.assertEqual(pprint.pformat(type(o)), exp)
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155
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156 o = range(100)
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157 exp = '[%s]' % ',\n '.join(map(str, o))
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158 for type in [list, list2]:
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159 self.assertEqual(pprint.pformat(type(o)), exp)
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160
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161 o = tuple(range(100))
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162 exp = '(%s)' % ',\n '.join(map(str, o))
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163 for type in [tuple, tuple2]:
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164 self.assertEqual(pprint.pformat(type(o)), exp)
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165
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166 # indent parameter
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167 o = range(100)
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168 exp = '[ %s]' % ',\n '.join(map(str, o))
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169 for type in [list, list2]:
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170 self.assertEqual(pprint.pformat(type(o), indent=4), exp)
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171
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172 def test_sorted_dict(self):
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173 # Starting in Python 2.5, pprint sorts dict displays by key regardless
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174 # of how small the dictionary may be.
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175 # Before the change, on 32-bit Windows pformat() gave order
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176 # 'a', 'c', 'b' here, so this test failed.
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177 d = {'a': 1, 'b': 1, 'c': 1}
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178 self.assertEqual(pprint.pformat(d), "{'a': 1, 'b': 1, 'c': 1}")
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179 self.assertEqual(pprint.pformat([d, d]),
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180 "[{'a': 1, 'b': 1, 'c': 1}, {'a': 1, 'b': 1, 'c': 1}]")
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181
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182 # The next one is kind of goofy. The sorted order depends on the
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183 # alphabetic order of type names: "int" < "str" < "tuple". Before
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184 # Python 2.5, this was in the test_same_as_repr() test. It's worth
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185 # keeping around for now because it's one of few tests of pprint
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186 # against a crazy mix of types.
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187 self.assertEqual(pprint.pformat({"xy\tab\n": (3,), 5: [[]], (): {}}),
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188 r"{5: [[]], 'xy\tab\n': (3,), (): {}}")
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189
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190 def test_subclassing(self):
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191 o = {'names with spaces': 'should be presented using repr()',
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192 'others.should.not.be': 'like.this'}
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193 exp = """\
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194 {'names with spaces': 'should be presented using repr()',
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195 others.should.not.be: like.this}"""
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196 self.assertEqual(DottedPrettyPrinter().pformat(o), exp)
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197
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198
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199 class DottedPrettyPrinter(pprint.PrettyPrinter):
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200
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201 def format(self, object, context, maxlevels, level):
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202 if isinstance(object, str):
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203 if ' ' in object:
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204 return repr(object), 1, 0
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205 else:
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206 return object, 0, 0
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207 else:
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208 return pprint.PrettyPrinter.format(
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209 self, object, context, maxlevels, level)
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210
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211
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212 def test_main():
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213 test.test_support.run_unittest(QueryTestCase)
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214
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215
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216 if __name__ == "__main__":
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217 test_main()