We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
pwn constgrep a throws an exception
Ugh, this seems wrong:

```
root@pwndbg:~# pwn constgrep a
Traceback (most recent call last):
  File "/usr/local/bin/pwn", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.10/dist-packages/pwnlib/commandline/main.py", line 58, in main
    commands[args.command](args)
  File "/usr/local/lib/python3.10/dist-packages/pwnlib/commandline/constgrep.py", line 110, in main
    for _, k in sorted(out):
TypeError: '<' not supported between instances of 'Constant' and 'type'
```

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `pwnlib/commandline/constgrep.py`
Content:
```
1 from __future__ import absolute_import
2 from __future__ import division
3 
4 import argparse
5 import functools
6 import re
7 
8 import pwnlib.args
9 pwnlib.args.free_form = False
10 
11 from pwn import *
12 from pwnlib.commandline import common
13 
14 p = common.parser_commands.add_parser(
15     'constgrep',
16     help = "Looking up constants from header files.\n\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'",
17     description = "Looking up constants from header files.\n\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'",
18     formatter_class = argparse.RawDescriptionHelpFormatter,
19 )
20 
21 p.add_argument(
22     '-e', '--exact',
23     action='store_true',
24     help='Do an exact match for a constant instead of searching for a regex',
25 )
26 
27 p.add_argument(
28     'regex',
29     help='The regex matching constant you want to find',
30 )
31 
32 p.add_argument(
33     'constant',
34     nargs = '?',
35     default = None,
36     type = safeeval.expr,
37     help = 'The constant to find',
38 )
39 
40 p.add_argument(
41     '-i', '--case-insensitive',
42     action = 'store_true',
43     help = 'Search case insensitive',
44 )
45 
46 p.add_argument(
47     '-m', '--mask-mode',
48     action = 'store_true',
49     help = 'Instead of searching for a specific constant value, search for values not containing strictly less bits that the given value.',
50 )
51 
52 p.add_argument(
53     '-c', '--context',
54     metavar = 'arch_or_os',
55     action = 'append',
56     type   = common.context_arg,
57     choices = common.choices,
58     help = 'The os/architecture/endianness/bits the shellcode will run in (default: linux/i386), choose from: %s' % common.choices,
59 )
60 
61 def main(args):
62     if args.exact:
63         # This is the simple case
64         print(cpp(args.regex).strip())
65     else:
66         # New we search in the right module.
67         # But first: We find the right module
68         if context.os == 'freebsd':
69             mod = constants.freebsd
70         else:
71             mod = getattr(getattr(constants, context.os), context.arch)
72 
73         # Compile the given regex, for optimized lookup
74         if args.case_insensitive:
75             matcher = re.compile(args.regex, re.IGNORECASE)
76         else:
77             matcher = re.compile(args.regex)
78 
79         # The found matching constants and the length of the longest string
80         out    = []
81         maxlen = 0
82 
83         constant = args.constant
84 
85         for k in dir(mod):
86             # No python stuff
87             if k.endswith('__') and k.startswith('__'):
88                 continue
89 
90             # Run the regex
91             if not matcher.search(k):
92                 continue
93 
94             # Check the constant
95             if constant is not None:
96                 val = getattr(mod, k)
97                 if args.mask_mode:
98                     if constant & val != val:
99                         continue
100                 else:
101                     if constant != val:
102                         continue
103 
104             # Append it
105             out.append((getattr(mod, k), k))
106             maxlen = max(len(k), maxlen)
107 
108         # Output all matching constants
109         for _, k in sorted(out):
110             print('#define %s %s' % (k.ljust(maxlen), cpp(k).strip()))
111 
112         # If we are in match_mode, then try to find a combination of
113         # constants that yield the exact given value
114         # We do not want to find combinations using the value 0.
115         if constant and args.mask_mode:
116             mask = constant
117             good = []
118             out = [(v, k) for v, k in out if v != 0]
119 
120             while mask and out:
121                 cur = out.pop()
122                 mask &= ~cur[0]
123                 good.append(cur)
124 
125                 out = [(v, k) for v, k in out if mask & v == v]
126 
127             if functools.reduce(lambda x, cur: x | cur[0], good, 0) == constant:
128                 print('')
129                 print('(%s) == %s' % (' | '.join(k for v, k in good), args.constant))
130 
131 if __name__ == '__main__':
132     pwnlib.commandline.common.main(__file__)
133
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/pwnlib/commandline/constgrep.py b/pwnlib/commandline/constgrep.py
--- a/pwnlib/commandline/constgrep.py
+++ b/pwnlib/commandline/constgrep.py
@@ -91,9 +91,13 @@
             if not matcher.search(k):
                 continue
 
+            # Check if the value has proper type
+            val = getattr(mod, k)
+            if not isinstance(val, pwnlib.constants.constant.Constant):
+                continue
+
             # Check the constant
             if constant is not None:
-                val = getattr(mod, k)
                 if args.mask_mode:
                     if constant & val != val:
                         continue
@@ -102,7 +106,7 @@
                         continue
 
             # Append it
-            out.append((getattr(mod, k), k))
+            out.append((val, k))
             maxlen = max(len(k), maxlen)
 
         # Output all matching constants

{"golden_diff": "diff --git a/pwnlib/commandline/constgrep.py b/pwnlib/commandline/constgrep.py\n--- a/pwnlib/commandline/constgrep.py\n+++ b/pwnlib/commandline/constgrep.py\n@@ -91,9 +91,13 @@\n             if not matcher.search(k):\n                 continue\n \n+            # Check if the value has proper type\n+            val = getattr(mod, k)\n+            if not isinstance(val, pwnlib.constants.constant.Constant):\n+                continue\n+\n             # Check the constant\n             if constant is not None:\n-                val = getattr(mod, k)\n                 if args.mask_mode:\n                     if constant & val != val:\n                         continue\n@@ -102,7 +106,7 @@\n                         continue\n \n             # Append it\n-            out.append((getattr(mod, k), k))\n+            out.append((val, k))\n             maxlen = max(len(k), maxlen)\n \n         # Output all matching constants\n", "issue": "pwn constgrep a throws an exception\nUgh, this seems wrong:\r\n\r\n```\r\nroot@pwndbg:~# pwn constgrep a\r\nTraceback (most recent call last):\r\n  File \"/usr/local/bin/pwn\", line 8, in <module>\r\n    sys.exit(main())\r\n  File \"/usr/local/lib/python3.10/dist-packages/pwnlib/commandline/main.py\", line 58, in main\r\n    commands[args.command](args)\r\n  File \"/usr/local/lib/python3.10/dist-packages/pwnlib/commandline/constgrep.py\", line 110, in main\r\n    for _, k in sorted(out):\r\nTypeError: '<' not supported between instances of 'Constant' and 'type'\r\n```\n", "before_files": [{"content": "from __future__ import absolute_import\nfrom __future__ import division\n\nimport argparse\nimport functools\nimport re\n\nimport pwnlib.args\npwnlib.args.free_form = False\n\nfrom pwn import *\nfrom pwnlib.commandline import common\n\np = common.parser_commands.add_parser(\n    'constgrep',\n    help = \"Looking up constants from header files.\\n\\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'\",\n    description = \"Looking up constants from header files.\\n\\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'\",\n    formatter_class = argparse.RawDescriptionHelpFormatter,\n)\n\np.add_argument(\n    '-e', '--exact',\n    action='store_true',\n    help='Do an exact match for a constant instead of searching for a regex',\n)\n\np.add_argument(\n    'regex',\n    help='The regex matching constant you want to find',\n)\n\np.add_argument(\n    'constant',\n    nargs = '?',\n    default = None,\n    type = safeeval.expr,\n    help = 'The constant to find',\n)\n\np.add_argument(\n    '-i', '--case-insensitive',\n    action = 'store_true',\n    help = 'Search case insensitive',\n)\n\np.add_argument(\n    '-m', '--mask-mode',\n    action = 'store_true',\n    help = 'Instead of searching for a specific constant value, search for values not containing strictly less bits that the given value.',\n)\n\np.add_argument(\n    '-c', '--context',\n    metavar = 'arch_or_os',\n    action = 'append',\n    type   = common.context_arg,\n    choices = common.choices,\n    help = 'The os/architecture/endianness/bits the shellcode will run in (default: linux/i386), choose from: %s' % common.choices,\n)\n\ndef main(args):\n    if args.exact:\n        # This is the simple case\n        print(cpp(args.regex).strip())\n    else:\n        # New we search in the right module.\n        # But first: We find the right module\n        if context.os == 'freebsd':\n            mod = constants.freebsd\n        else:\n            mod = getattr(getattr(constants, context.os), context.arch)\n\n        # Compile the given regex, for optimized lookup\n        if args.case_insensitive:\n            matcher = re.compile(args.regex, re.IGNORECASE)\n        else:\n            matcher = re.compile(args.regex)\n\n        # The found matching constants and the length of the longest string\n        out    = []\n        maxlen = 0\n\n        constant = args.constant\n\n        for k in dir(mod):\n            # No python stuff\n            if k.endswith('__') and k.startswith('__'):\n                continue\n\n            # Run the regex\n            if not matcher.search(k):\n                continue\n\n            # Check the constant\n            if constant is not None:\n                val = getattr(mod, k)\n                if args.mask_mode:\n                    if constant & val != val:\n                        continue\n                else:\n                    if constant != val:\n                        continue\n\n            # Append it\n            out.append((getattr(mod, k), k))\n            maxlen = max(len(k), maxlen)\n\n        # Output all matching constants\n        for _, k in sorted(out):\n            print('#define %s %s' % (k.ljust(maxlen), cpp(k).strip()))\n\n        # If we are in match_mode, then try to find a combination of\n        # constants that yield the exact given value\n        # We do not want to find combinations using the value 0.\n        if constant and args.mask_mode:\n            mask = constant\n            good = []\n            out = [(v, k) for v, k in out if v != 0]\n\n            while mask and out:\n                cur = out.pop()\n                mask &= ~cur[0]\n                good.append(cur)\n\n                out = [(v, k) for v, k in out if mask & v == v]\n\n            if functools.reduce(lambda x, cur: x | cur[0], good, 0) == constant:\n                print('')\n                print('(%s) == %s' % (' | '.join(k for v, k in good), args.constant))\n\nif __name__ == '__main__':\n    pwnlib.commandline.common.main(__file__)\n", "path": "pwnlib/commandline/constgrep.py"}], "after_files": [{"content": "from __future__ import absolute_import\nfrom __future__ import division\n\nimport argparse\nimport functools\nimport re\n\nimport pwnlib.args\npwnlib.args.free_form = False\n\nfrom pwn import *\nfrom pwnlib.commandline import common\n\np = common.parser_commands.add_parser(\n    'constgrep',\n    help = \"Looking up constants from header files.\\n\\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'\",\n    description = \"Looking up constants from header files.\\n\\nExample: constgrep -c freebsd -m  ^PROT_ '3 + 4'\",\n    formatter_class = argparse.RawDescriptionHelpFormatter,\n)\n\np.add_argument(\n    '-e', '--exact',\n    action='store_true',\n    help='Do an exact match for a constant instead of searching for a regex',\n)\n\np.add_argument(\n    'regex',\n    help='The regex matching constant you want to find',\n)\n\np.add_argument(\n    'constant',\n    nargs = '?',\n    default = None,\n    type = safeeval.expr,\n    help = 'The constant to find',\n)\n\np.add_argument(\n    '-i', '--case-insensitive',\n    action = 'store_true',\n    help = 'Search case insensitive',\n)\n\np.add_argument(\n    '-m', '--mask-mode',\n    action = 'store_true',\n    help = 'Instead of searching for a specific constant value, search for values not containing strictly less bits that the given value.',\n)\n\np.add_argument(\n    '-c', '--context',\n    metavar = 'arch_or_os',\n    action = 'append',\n    type   = common.context_arg,\n    choices = common.choices,\n    help = 'The os/architecture/endianness/bits the shellcode will run in (default: linux/i386), choose from: %s' % common.choices,\n)\n\ndef main(args):\n    if args.exact:\n        # This is the simple case\n        print(cpp(args.regex).strip())\n    else:\n        # New we search in the right module.\n        # But first: We find the right module\n        if context.os == 'freebsd':\n            mod = constants.freebsd\n        else:\n            mod = getattr(getattr(constants, context.os), context.arch)\n\n        # Compile the given regex, for optimized lookup\n        if args.case_insensitive:\n            matcher = re.compile(args.regex, re.IGNORECASE)\n        else:\n            matcher = re.compile(args.regex)\n\n        # The found matching constants and the length of the longest string\n        out    = []\n        maxlen = 0\n\n        constant = args.constant\n\n        for k in dir(mod):\n            # No python stuff\n            if k.endswith('__') and k.startswith('__'):\n                continue\n\n            # Run the regex\n            if not matcher.search(k):\n                continue\n\n            # Check if the value has proper type\n            val = getattr(mod, k)\n            if not isinstance(val, pwnlib.constants.constant.Constant):\n                continue\n\n            # Check the constant\n            if constant is not None:\n                if args.mask_mode:\n                    if constant & val != val:\n                        continue\n                else:\n                    if constant != val:\n                        continue\n\n            # Append it\n            out.append((val, k))\n            maxlen = max(len(k), maxlen)\n\n        # Output all matching constants\n        for _, k in sorted(out):\n            print('#define %s %s' % (k.ljust(maxlen), cpp(k).strip()))\n\n        # If we are in match_mode, then try to find a combination of\n        # constants that yield the exact given value\n        # We do not want to find combinations using the value 0.\n        if constant and args.mask_mode:\n            mask = constant\n            good = []\n            out = [(v, k) for v, k in out if v != 0]\n\n            while mask and out:\n                cur = out.pop()\n                mask &= ~cur[0]\n                good.append(cur)\n\n                out = [(v, k) for v, k in out if mask & v == v]\n\n            if functools.reduce(lambda x, cur: x | cur[0], good, 0) == constant:\n                print('')\n                print('(%s) == %s' % (' | '.join(k for v, k in good), args.constant))\n\nif __name__ == '__main__':\n    pwnlib.commandline.common.main(__file__)\n", "path": "pwnlib/commandline/constgrep.py"}]}