Cli attempt

coding_assistant/__init__.py

@@ -1,9 +1,15 @@
 # type: ignore
 import sys
+import traceback
+
+
+class AssistantException(Exception):
+    ...
+
 
 _old_hook = sys.excepthook
 
-# I don't want to be sued my MS so I'll use a single 'p'
+# I don't want to be sued by MS so I'll use a single 'p'
 clipy = """
  _-_  | /
 /_  \\ |/
@@ -14,11 +20,26 @@
  ¯--¯"""
 
 
+def pathname(obj):
+    """Create qualified pathname for objs. eg. module.sub.obj, module.sub.inner.obj"""
+
+    module = obj.__module__
+
+    # TB doesn't include builtin path
+    if module is None or module == "builtins":
+        return obj.__name__
+    return module + '.' + obj.__name__
+
+
 def assistant_print(type_, value, tb):
     _old_hook(type_, value, tb)
-    width = len(f"{type_.__qualname__}{f': {value}' if value else ''}")-2
-    print(f"\\{'_'*width}/" + clipy)
-
+    # Traceback is inconsistent about which path to use, `format_exception_only` displays relative paths,
+    # dropping magic roots, eg. "__main__" but still formatting necessary message information
+    # When the exception hook uses them, it drops absolute paths, eg. "__main__.Super.Sub" becomes "__main__.Sub"
+    message = traceback.format_exception_only(value).pop().strip().split(": ", 1)
+    message[0] = pathname(type_)
+    width = len(": ".join(message)) - 2
+    print(f"\\{'_' * width}/" + clipy, file=sys.stderr)
 
 
 sys.excepthook = assistant_print

coding_assistant/__main__.py

@@ -0,0 +1,44 @@
+import sys
+from pathlib import Path
+from subprocess import Popen, PIPE
+
+import coding_assistant
+
+
+# Hardcoded values, helps refactoring for multiple assistants down the line
+PATH_IDX = 1
+ARGS_IDX = 2
+ASSISTANT = coding_assistant.clipy
+
+
+def cli():
+    try:
+        path = Path(sys.argv[PATH_IDX]).resolve()
+    except IndexError:
+        raise coding_assistant.AssistantException("Path to file is missing!") from None
+    args = sys.argv[ARGS_IDX:]
+
+    # Path to Python Interpreter
+    python = sys.executable
+    p = Popen([python, path, *args], text=True, stdin=sys.stdin, stdout=sys.stdout, stderr=PIPE)
+    _, err = p.communicate()
+    if err:
+        # Normal encoding of the ASCII art was causing errors, this is Windows-1252, a legacy encoding scheme
+        err = err
+
+        # Break into lines
+        split_assistant = ASSISTANT.splitlines()
+        split_err = err.splitlines()
+
+        # Prevent double assistant by comparing lines that should be equivalent
+        # Skip first line due to funky spacing of decoded characters
+        if split_assistant[1:] != split_err[-len(split_assistant)+1:]:
+            width = len(split_err[-1]) - 2
+            err += f"\\{'_' * width}/" + ASSISTANT
+
+        print(err, file=sys.stderr)
+    return p.returncode
+
+
+if __name__ == '__main__':
+    sys.exit(cli())

setup.py

@@ -25,4 +25,8 @@
         "Operating System :: OS Independent",
     ],
     python_requires='>=3.9',
+    entry_points={'console_scripts': [
+        'assistant = coding_assistant.__main__:cli',
+        ],
+    }
 )