python · modulitos · Jun 12, 2017 · Jun 15, 2017
diff --git a/Lib/json/tool.py b/Lib/json/tool.py
@@ -27,11 +27,14 @@ def main():
                        help='write the output of infile to outfile')
    parser.add_argument('--sort-keys', action='store_true', default=False,
                        help='sort the output of dictionaries alphabetically by key')
+    parser.add_argument('--indent', action='store', default=4, type=int,
+                        help='level of indentation used for pretty printing')
    options = parser.parse_args()

    infile = options.infile or sys.stdin
    outfile = options.outfile or sys.stdout
    sort_keys = options.sort_keys
+    indent = options.indent or 4
    with infile:
        try:
            if sort_keys:
@@ -42,7 +45,7 @@ def main():
        except ValueError as e:
            raise SystemExit(e)
    with outfile:
-        json.dump(obj, outfile, sort_keys=sort_keys, indent=4)
+        json.dump(obj, outfile, sort_keys=sort_keys, indent=indent)
        outfile.write('\n')