Mercurial > cpython-lru_cache-weakref

annotate Lib/json/tool.py @ 78069:a8aa77458e12 3.2

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Add c_size_t and c_ssize_t to the ctypes summary table.
author Antoine Pitrou <solipsis@pitrou.net>
date Thu, 12 Jul 2012 20:31:50 +0200
parents 9854520c8200
children 44c544809e6c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 r"""Command-line tool to validate and pretty-print JSON
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2
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3 Usage::
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4
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5 $ echo '{"json":"obj"}' | python -m json.tool
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6 {
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7 "json": "obj"
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8 }
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9 $ echo '{ 1.2:3.4}' | python -m json.tool
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9854520c8200 Issue #5067: improve some json error messages.
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10 Expecting property name enclosed in double quotes: line 1 column 2 (char 2)
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11
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12 """
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13 import sys
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14 import json
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15
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16 def main():
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17 if len(sys.argv) == 1:
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18 infile = sys.stdin
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19 outfile = sys.stdout
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20 elif len(sys.argv) == 2:
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21 infile = open(sys.argv[1], 'rb')
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22 outfile = sys.stdout
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23 elif len(sys.argv) == 3:
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24 infile = open(sys.argv[1], 'rb')
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25 outfile = open(sys.argv[2], 'wb')
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26 else:
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27 raise SystemExit(sys.argv[0] + " [infile [outfile]]")
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28 try:
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29 obj = json.load(infile)
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30 except ValueError as e:
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31 raise SystemExit(e)
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32 json.dump(obj, outfile, sort_keys=True, indent=4)
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33 outfile.write('\n')
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35
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36 if __name__ == '__main__':
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37 main()