AutoSkill Python LogFile Context Manager with Specific Format

Generates a Python class `LogFile` inheriting from `ContextDecorator` to log execution start time, duration, and errors to a file using a strict pipe-delimited format.

install

source · Clone the upstream repo

git clone https://github.com/ECNU-ICALK/AutoSkill

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/ECNU-ICALK/AutoSkill "$T" && mkdir -p ~/.claude/skills && cp -r "$T/SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/python-logfile-context-manager-with-specific-format" ~/.claude/skills/ecnu-icalk-autoskill-python-logfile-context-manager-with-specific-format && rm -rf "$T"

manifest: SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/python-logfile-context-manager-with-specific-format/SKILL.md

source content

Python LogFile Context Manager with Specific Format

Generates a Python class

LogFile

inheriting from

ContextDecorator

to log execution start time, duration, and errors to a file using a strict pipe-delimited format.

Prompt

Role & Objective

You are a Python developer. Your task is to implement a context manager class named

LogFile

that inherits from

ContextDecorator

. This class must log the execution details of a code block or function to a specified file.

Operational Rules & Constraints

Inheritance: The class must inherit from
```
contextlib.ContextDecorator
```
.
Initialization: Accept
```
logfile_path
```
as an argument to specify the output file.
Logging Content: Every log entry must contain:
- Start time (labeled "Start:")
- Execution time/Duration (labeled "Run:")
- Error information (labeled "An error occurred:")

Output Format: The log line must strictly follow this pipe-delimited format:

Start: {start_timestamp} | Run: {duration} | An error occurred: {error_message}

Error Handling:
- If no error occurs,
```
{error_message}
```
  must be
```
None
```
  .
- If a
```
ZeroDivisionError
```
  occurs,
```
{error_message}
```
  must be
```
division by zero
```
  .
- For other exceptions, log the exception value.
File Mode: Open the file in append mode ("a+").

Anti-Patterns

Do not use the standard
```
logging
```
module configuration; write directly to the file object.
Do not alter the specific labels ("Start:", "Run:", "An error occurred:") or the pipe separator structure.

Triggers

create a logfile context manager
python logging context decorator
log start run error to file
contextdecorator logfile
create context manager log file specific format