> ## Documentation Index
> Fetch the complete documentation index at: https://e2b-banner-hover-tooltip.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Template async logger

## LogEntry

```python theme={null}
@dataclass
class LogEntry()
```

Represents a single log entry from the template build process.

## LogEntryStart

```python theme={null}
@dataclass
class LogEntryStart(LogEntry)
```

Special log entry indicating the start of a build process.

## LogEntryEnd

```python theme={null}
@dataclass
class LogEntryEnd(LogEntry)
```

Special log entry indicating the end of a build process.

### TIMER\_UPDATE\_INTERVAL\_MS

Default minimum log level to display.

### DEFAULT\_LEVEL

Colored labels for each log level.

### levels

Numeric ordering of log levels for comparison (lower = less severe).

### set\_interval

```python theme={null}
def set_interval(func, interval)
```

Returns a stop function that can be called to cancel the interval.

Similar to JavaScript's setInterval.

**Arguments**:

* `func`: Function to execute at each interval
* `interval`: Interval duration in **seconds**

**Returns**:

Stop function that can be called to cancel the interval

### default\_build\_logger

```python theme={null}
def default_build_logger(
        min_level: Optional[LogEntryLevel] = None
) -> Callable[[LogEntry], None]
```

Create a default build logger with animated timer display.

**Arguments**:

* `min_level`: Minimum log level to display (default: 'info')

**Returns**:

Logger function that accepts LogEntry instances
Example

```python theme={null}
from e2b import Template, default_build_logger

template = Template().from_python_image()

```