microsoft/autogen · error · FileNotFoundError

File {path} does not exist.

Error message

File {path} does not exist.

What it means

FileNotFoundError raised by agbench's code_log CLI helper when the path passed to the 'code' command does not point to an existing file. The helper branches on os.path.isfile(path) and explicitly raises with the offending path when the check fails, before any LLM coding happens.

Source

Thrown at python/packages/agbench/src/agbench/linter/cli.py:39

def load_log_file(path: str, prepend_numbers: bool = False) -> Document:
    with open(path, "r") as f:
        lines = f.readlines()
    if prepend_numbers:
        lines = prepend_line_numbers(lines)

    text = "".join(lines)
    return Document(text=text, name=os.path.abspath(path))


def code_log(path: str) -> Optional[CodedDocument]:
    coder = OAIQualitativeCoder()

    if os.path.isfile(path):
        doc = load_log_file(path, prepend_numbers=True)
        coded_doc = coder.code_document(doc)
        return coded_doc
    else:
        raise FileNotFoundError(f"File {path} does not exist.")


def print_coded_results(input_path: str, coded_doc: CodedDocument) -> None:
    num_errors: int = 0
    # define map from severity to ANSI color
    severity_color_map = {2: "\033[31m", 1: "\033[33m", 0: "\033[32m"}

    # sort the codes by severity with the most severe first
    sorted_codes = sorted(coded_doc.codes, key=lambda x: x.severity, reverse=True)

    for code in sorted_codes:
        # select color based on severity, default to white if missing
        color = severity_color_map.get(code.severity, "\033[37m")
        print(f"{color}[{code.severity}]: {code.name}\033[0m: {code.definition}")
        for example in code.examples:
            print(f"\033[1m{input_path}\033[0m:{example.line}" f":{example.line_end}\t{example.reason}")
            num_errors += 1
    print("\n")

View on GitHub (pinned to 027ecf0a37)

Solutions

1. Check the path exists and is a file before invoking the command: os.path.isfile(path) / test -f.
2. Use an absolute path or run the CLI from the directory containing the log file.
3. If you expected the file to be generated by an earlier agbench step, verify that step succeeded first.

Example fix

# before
agbench lint code runs/results/missing.jsonl

# after
ls runs/results/ # confirm the filename
agbench lint code "$(pwd)/runs/results/actual_name.jsonl"

import os, sys
path = sys.argv[1]
if not os.path.isfile(path):
    sys.exit(f"error: no such file: {path}")
# safe to call the code command now

from pathlib import Path

def is_codable_log(p: str) -> bool:
    return Path(p).is_file() and Path(p).stat().st_size > 0

try:
    coded = code_log(path)
except FileNotFoundError as e:
    print(f"Input not found: {e}. Check the path and cwd.")
    raise SystemExit(2)

When it happens

Trigger: Running the agbench linter code command with a misspelled path, a directory instead of a file, a relative path resolved from the wrong working directory, or a file that was moved/deleted.

Common situations: Shell tab-completion typos; running the CLI from a different cwd so relative paths break; passing a glob that the shell did not expand; referencing benchmark output files that a previous step failed to write.

Related errors

• Failed to list MCP prompts
• Failed to get MCP prompt
• Failed to get MCP capabilities
• Failed to code the document.
• '{search_dir}' is not a directory.

AI-assisted analysis of microsoft/autogen@027ecf0a37 (2026-08-15). Data as JSON: /api/errors/d99f0bd325af6693. Report an issue: GitHub.