`ultralytics 8.2.61` fix `num_threads` for CPU training (#14544)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

docs/build_docs.py

@@ -30,6 +30,7 @@ import shutil
 import subprocess
 from pathlib import Path
 
+from bs4 import BeautifulSoup
 from tqdm import tqdm
 
 os.environ["JUPYTER_PLATFORM_DIRS"] = "1"  # fix DeprecationWarning: Jupyter is migrating to use standard platformdirs
@@ -96,8 +97,6 @@ def update_html_head(script=""):
 
 def update_subdir_edit_links(subdir="", docs_url=""):
     """Update the HTML head section of each file."""
-    from bs4 import BeautifulSoup
-
     if str(subdir[0]) == "/":
         subdir = str(subdir[0])[1:]
     html_files = (SITE / subdir).rglob("*.html")
@@ -153,7 +152,7 @@ def update_markdown_files(md_filepath: Path):
 
 
 def update_docs_html():
-    """Updates titles, edit links and head sections of HTML documentation for improved accessibility and relevance."""
+    """Updates titles, edit links, head sections, and converts plaintext links in HTML documentation."""
     update_page_title(SITE / "404.html", new_title="Ultralytics Docs - Not Found")
 
     # Update edit links
@@ -162,12 +161,46 @@ def update_docs_html():
         docs_url="https://github.com/ultralytics/hub-sdk/tree/main/docs/",
     )
 
+    # Convert plaintext links to HTML hyperlinks
+    files_modified = 0
+    for html_file in tqdm(SITE.rglob("*.html"), desc="Converting plaintext links"):
+        with open(html_file, "r", encoding="utf-8") as file:
+            content = file.read()
+        updated_content = convert_plaintext_links_to_html(content)
+        if updated_content != content:
+            with open(html_file, "w", encoding="utf-8") as file:
+                file.write(updated_content)
+            files_modified += 1
+    print(f"Modified plaintext links in {files_modified} files.")
+
     # Update HTML file head section
     script = ""
     if any(script):
         update_html_head(script)
 
 
+def convert_plaintext_links_to_html(content):
+    """Convert plaintext links to HTML hyperlinks in the main content area only."""
+    soup = BeautifulSoup(content, "html.parser")
+
+    # Find the main content area (adjust this selector based on your HTML structure)
+    main_content = soup.find("main") or soup.find("div", class_="md-content")
+    if not main_content:
+        return content  # Return original content if main content area not found
+
+    modified = False
+    for paragraph in main_content.find_all(["p", "li"]):  # Focus on paragraphs and list items
+        for text_node in paragraph.find_all(string=True, recursive=False):
+            if text_node.parent.name not in {"a", "code"}:  # Ignore links and code blocks
+                new_text = re.sub(r"(https?://\S+)", r'<a href="\1">\1</a>', str(text_node))  # note: reject http?
+                if "<a" in new_text:
+                    new_soup = BeautifulSoup(new_text, "html.parser")
+                    text_node.replace_with(new_soup)
+                    modified = True
+
+    return str(soup) if modified else content
+
+
 def main():
     """Builds docs, updates titles and edit links, and prints local server command."""
     prepare_docs_markdown()

mkdocs.yml

@@ -614,6 +614,9 @@ plugins:
       handlers:
         python:
           options:
+            docstring_options:
+              ignore_init_summary: true
+            merge_init_into_class: true
             docstring_style: google
             show_root_heading: true
             show_source: true

ultralytics/__init__.py

@@ -1,6 +1,6 @@
 # Ultralytics YOLO 🚀, AGPL-3.0 license
 
-__version__ = "8.2.60"
+__version__ = "8.2.61"
 
 import os
 

ultralytics/cfg/__init__.py

@@ -190,27 +190,23 @@ def cfg2dict(cfg):
     Convert a configuration object to a dictionary, whether it is a file path, a string, or a SimpleNamespace object.
 
     Args:
-        cfg (str | Path | dict | SimpleNamespace): Configuration object to be converted to a dictionary. This may be a
+        cfg (str | Path | Dict | SimpleNamespace): Configuration object to be converted to a dictionary. This may be a
             path to a configuration file, a dictionary, or a SimpleNamespace object.
 
     Returns:
-        (dict): Configuration object in dictionary format.
+        (Dict): Configuration object in dictionary format.
 
-    Example:
-        ```python
-        from ultralytics.cfg import cfg2dict
-        from types import SimpleNamespace
+    Examples:
+        Convert a YAML file path to a dictionary:
+        >>> config_dict = cfg2dict('config.yaml')
 
-        # Example usage with a file path
-        config_dict = cfg2dict('config.yaml')
+        Convert a SimpleNamespace to a dictionary:
+        >>> from types import SimpleNamespace
+        >>> config_sn = SimpleNamespace(param1='value1', param2='value2')
+        >>> config_dict = cfg2dict(config_sn)
 
-        # Example usage with a SimpleNamespace
-        config_sn = SimpleNamespace(param1='value1', param2='value2')
-        config_dict = cfg2dict(config_sn)
-
-        # Example usage with a dictionary (returns the same dictionary)
-        config_dict = cfg2dict({'param1': 'value1', 'param2': 'value2'})
-        ```
+        Pass through an already existing dictionary:
+        >>> config_dict = cfg2dict({'param1': 'value1', 'param2': 'value2'})
 
     Notes:
         - If `cfg` is a path or a string, it will be loaded as YAML and converted to a dictionary.
@@ -228,9 +224,8 @@ def get_cfg(cfg: Union[str, Path, Dict, SimpleNamespace] = DEFAULT_CFG_DICT, ove
     Load and merge configuration data from a file or dictionary, with optional overrides.
 
     Args:
-        cfg (str | Path | dict | SimpleNamespace, optional): Configuration data source. Defaults to `DEFAULT_CFG_DICT`.
-        overrides (dict | None, optional): Dictionary containing key-value pairs to override the base configuration.
-            Defaults to None.
+        cfg (str | Path | Dict | SimpleNamespace): Configuration data source.
+        overrides (Dict | None): Dictionary containing key-value pairs to override the base configuration.
 
     Returns:
         (SimpleNamespace): Namespace containing the merged training arguments.
@@ -238,23 +233,15 @@ def get_cfg(cfg: Union[str, Path, Dict, SimpleNamespace] = DEFAULT_CFG_DICT, ove
     Notes:
         - If both `cfg` and `overrides` are provided, the values in `overrides` will take precedence.
         - Special handling ensures alignment and correctness of the configuration, such as converting numeric `project`
-          and `name` to strings and validating the configuration keys and values.
-
-    Example:
-        ```python
-        from ultralytics.cfg import get_cfg
+          and `name` to strings and validating configuration keys and values.
 
-        # Load default configuration
-        config = get_cfg()
-
-        # Load from a custom file with overrides
-        config = get_cfg('path/to/config.yaml', overrides={'epochs': 50, 'batch_size': 16})
-        ```
+    Examples:
+        Load default configuration:
+        >>> from ultralytics import get_cfg
+        >>> config = get_cfg()
 
-        Configuration dictionary merged with overrides:
-        ```python
-        {'epochs': 50, 'batch_size': 16, ...}
-        ```
+        Load from a custom file with overrides:
+        >>> config = get_cfg('path/to/config.yaml', overrides={'epochs': 50, 'batch_size': 16})
     """
     cfg = cfg2dict(cfg)
 
@@ -282,7 +269,26 @@ def get_cfg(cfg: Union[str, Path, Dict, SimpleNamespace] = DEFAULT_CFG_DICT, ove
 
 
 def check_cfg(cfg, hard=True):
-    """Validate Ultralytics configuration argument types and values, converting them if necessary."""
+    """
+    Checks configuration argument types and values for the Ultralytics library, ensuring correctness and converting them
+    if necessary.
+
+    Args:
+        cfg (Dict): Configuration dictionary to validate.
+        hard (bool): If True, raises exceptions for invalid types and values; if False, attempts to convert them.
+
+    Examples:
+        Validate a configuration with a mix of valid and invalid values:
+        >>> config = {
+        ...     'epochs': 50,         # valid integer
+        ...     'lr0': 0.01,         # valid float
+        ...     'momentum': 1.2,     # invalid float (out of 0.0-1.0 range)
+        ...     'save': 'true',      # invalid bool
+        ... }
+        >>> check_cfg(config, hard=False)
+        >>> print(config)
+        {'epochs': 50, 'lr0': 0.01, 'momentum': 1.2, 'save': False}  # corrected 'save' key and retained other values
+    """
     for k, v in cfg.items():
         if v is not None:  # None values may be from optional args
             if k in CFG_FLOAT_KEYS and not isinstance(v, (int, float)):
@@ -318,7 +324,26 @@ def check_cfg(cfg, hard=True):
 
 
 def get_save_dir(args, name=None):
-    """Returns the directory path for saving outputs, derived from arguments or default settings."""
+    """
+    Returns the directory path for saving outputs, derived from arguments or default settings.
+
+    Args:
+        args (SimpleNamespace): Namespace object containing configurations such as 'project', 'name', 'task', 'mode', and
+            'save_dir'.
+        name (str | None): Optional name for the output directory. If not provided, it defaults to 'args.name' or the
+            'args.mode'.
+
+    Returns:
+        (Path): Directory path where outputs should be saved.
+
+    Examples:
+        Generate a save directory using provided arguments
+        >>> from types import SimpleNamespace
+        >>> args = SimpleNamespace(project='my_project', task='detect', mode='train', exist_ok=True)
+        >>> save_dir = get_save_dir(args)
+        >>> print(save_dir)
+        my_project/detect/train
+    """
 
     if getattr(args, "save_dir", None):
         save_dir = args.save_dir
@@ -333,7 +358,18 @@ def get_save_dir(args, name=None):
 
 
 def _handle_deprecation(custom):
-    """Handles deprecated configuration keys by mapping them to current equivalents with deprecation warnings."""
+    """
+    Handles deprecated configuration keys by mapping them to current equivalents with deprecation warnings.
+
+    Args:
+        custom (Dict): Configuration dictionary potentially containing deprecated keys.
+
+    Examples:
+        >>> custom_config = {"boxes": True, "hide_labels": "False", "line_thickness": 2}
+        >>> _handle_deprecation(custom_config)
+        >>> print(custom_config)
+        {'show_boxes': True, 'show_labels': True, 'line_width': 2}
+    """
 
     for key in custom.copy().keys():
         if key == "boxes":
@@ -354,35 +390,32 @@ def _handle_deprecation(custom):
 
 def check_dict_alignment(base: Dict, custom: Dict, e=None):
     """
-    Check for key alignment between custom and base configuration dictionaries, catering for deprecated keys and
-    providing informative error messages for mismatched keys.
+    Check for key alignment between custom and base configuration dictionaries, handling deprecated keys and providing
+    informative error messages for mismatched keys.
 
     Args:
-        base (dict): The base configuration dictionary containing valid keys.
-        custom (dict): The custom configuration dictionary to be checked for alignment.
-        e (Exception, optional): An optional error instance passed by the calling function. Default is None.
+        base (Dict): The base configuration dictionary containing valid keys.
+        custom (Dict): The custom configuration dictionary to be checked for alignment.
+        e (Exception | None): Optional error instance passed by the calling function. Default is None.
 
     Raises:
         SystemExit: Terminates the program execution if mismatched keys are found.
 
     Notes:
-        - The function provides suggestions for mismatched keys based on their similarity to valid keys in the
-          base configuration.
-        - Deprecated keys in the custom configuration are automatically handled and replaced with their updated
-          equivalents.
-        - A detailed error message is printed for each mismatched key, helping users to quickly identify and correct
-          their custom configurations.
-
-    Example:
-        ```python
-        base_cfg = {'epochs': 50, 'lr0': 0.01, 'batch_size': 16}
-        custom_cfg = {'epoch': 100, 'lr': 0.02, 'batch_size': 32}
-
-        try:
-            check_dict_alignment(base_cfg, custom_cfg)
-        except SystemExit:
-            # Handle the error or correct the configuration
-        ```
+        - The function suggests corrections for mismatched keys based on similarity to valid keys.
+        - Deprecated keys in the custom configuration are automatically replaced with their updated equivalents.
+        - Detailed error messages are printed for each mismatched key to help users identify and correct their custom
+          configurations.
+
+    Examples:
+        >>> base_cfg = {'epochs': 50, 'lr0': 0.01, 'batch_size': 16}
+        >>> custom_cfg = {'epoch': 100, 'lr': 0.02, 'batch_size': 32}
+
+        >>> try:
+        ...     check_dict_alignment(base_cfg, custom_cfg)
+        ... except SystemExit:
+        ...     # Handle the error or correct the configuration
+        ...     pass
     """
     custom = _handle_deprecation(custom)
     base_keys, custom_keys = (set(x.keys()) for x in (base, custom))
@@ -401,30 +434,29 @@ def check_dict_alignment(base: Dict, custom: Dict, e=None):
 
 def merge_equals_args(args: List[str]) -> List[str]:
     """
-    Merges arguments around isolated '=' args in a list of strings. The function considers cases where the first
-    argument ends with '=' or the second starts with '=', as well as when the middle one is an equals sign.
+    Merges arguments around isolated '=' in a list of strings.
 
     Args:
-        args (List[str]): A list of strings where each element is an argument.
+        args (List[str]): A list of strings where each element represents an argument.
 
     Returns:
         (List[str]): A list of strings where the arguments around isolated '=' are merged.
 
-    Example:
-        The function modifies the argument list as follows:
-        ```python
-        args = ["arg1", "=", "value"]
-        new_args = merge_equals_args(args)
-        print(new_args)  # Output: ["arg1=value"]
-
-        args = ["arg1=", "value"]
-        new_args = merge_equals_args(args)
-        print(new_args)  # Output: ["arg1=value"]
-
-        args = ["arg1", "=value"]
-        new_args = merge_equals_args(args)
-        print(new_args)  # Output: ["arg1=value"]
-        ```
+    Examples:
+        Merge arguments where equals sign is separated:
+        >>> args = ["arg1", "=", "value"]
+        >>> merge_equals_args(args)
+        ["arg1=value"]
+
+        Merge arguments where equals sign is at the end of the first argument:
+        >>> args = ["arg1=", "value"]
+        >>> merge_equals_args(args)
+        ["arg1=value"]
+
+        Merge arguments where equals sign is at the beginning of the second argument:
+        >>> args = ["arg1", "=value"]
+        >>> merge_equals_args(args)
+        ["arg1=value"]
     """
     new_args = []
     for i, arg in enumerate(args):
@@ -445,16 +477,13 @@ def handle_yolo_hub(args: List[str]) -> None:
     """
     Handle Ultralytics HUB command-line interface (CLI) commands.
 
-    This function processes Ultralytics HUB CLI commands such as login and logout. It should be called when executing
-    a script with arguments related to HUB authentication.
+    This function processes Ultralytics HUB CLI commands such as login and logout. It should be called when executing a
+    script with arguments related to HUB authentication.
 
     Args:
         args (List[str]): A list of command line arguments.
 
-    Returns:
-        None
-
-    Example:
+    Examples:
         ```bash
         yolo hub login YOUR_API_KEY
         ```
@@ -480,13 +509,9 @@ def handle_yolo_settings(args: List[str]) -> None:
     Args:
         args (List[str]): A list of command line arguments for YOLO settings management.
 
-    Returns:
-        None
-
-    Example:
-        ```bash
-        yolo settings reset
-        ```
+    Examples:
+        Reset YOLO settings:
+        >>> yolo settings reset
 
     Notes:
         For more information on handling YOLO settings, visit:
@@ -511,21 +536,58 @@ def handle_yolo_settings(args: List[str]) -> None:
 
 
 def handle_explorer():
-    """Open the Ultralytics Explorer GUI for dataset exploration and analysis."""
+    """
+    Open the Ultralytics Explorer GUI for dataset exploration and analysis.
+
+    This function launches a graphical user interface that provides tools for interacting with and analyzing datasets
+    using the Ultralytics Explorer API.
+
+    Examples:
+        Start the Ultralytics Explorer:
+        >>> handle_explorer()
+    """
     checks.check_requirements("streamlit>=1.29.0")
     LOGGER.info("💡 Loading Explorer dashboard...")
     subprocess.run(["streamlit", "run", ROOT / "data/explorer/gui/dash.py", "--server.maxMessageSize", "2048"])
 
 
 def handle_streamlit_inference():
-    """Open the Ultralytics Live Inference streamlit app for real time object detection."""
+    """
+    Open the Ultralytics Live Inference streamlit app for real-time object detection.
+
+    This function initializes and runs a Streamlit application designed for performing live object detection using
+    Ultralytics models.
+
+    References:
+        - Streamlit documentation: https://docs.streamlit.io/
+        - Ultralytics: https://docs.ultralytics.com
+
+    Examples:
+        To run the live inference Streamlit app, execute:
+        >>> handle_streamlit_inference()
+    """
     checks.check_requirements("streamlit>=1.29.0")
     LOGGER.info("💡 Loading Ultralytics Live Inference app...")
     subprocess.run(["streamlit", "run", ROOT / "solutions/streamlit_inference.py", "--server.headless", "true"])
 
 
 def parse_key_value_pair(pair):
-    """Parse one 'key=value' pair and return key and value."""
+    """
+    Parse a 'key=value' pair and return the key and value.
+
+    Args:
+        pair (str): The 'key=value' string to be parsed.
+
+    Returns:
+        (tuple[str, str]): A tuple containing the key and value as separate strings.
+
+    Examples:
+        >>> key, value = parse_key_value_pair("model=yolov8n.pt")
+        >>> key
+        'model'
+        >>> value
+        'yolov8n.pt
+    """
     k, v = pair.split("=", 1)  # split on first '=' sign
     k, v = k.strip(), v.strip()  # remove spaces
     assert v, f"missing '{k}' value"
@@ -533,7 +595,29 @@ def parse_key_value_pair(pair):
 
 
 def smart_value(v):
-    """Convert a string to its appropriate type (int, float, bool, None, etc.)."""
+    """
+    Convert a string representation of a value into its appropriate Python type (int, float, bool, None, etc.).
+
+    Args:
+        v (str): String representation of the value to be converted.
+
+    Returns:
+        (Any): The converted value, which can be of type int, float, bool, None, or the original string if no conversion
+            is applicable.
+
+    Examples:
+        Convert a string to various types:
+        >>> smart_value("42")
+        42
+        >>> smart_value("3.14")
+        3.14
+        >>> smart_value("True")
+        True
+        >>> smart_value("None")
+        None
+        >>> smart_value("some_string")
+        'some_string'
+    """
     v_lower = v.lower()
     if v_lower == "none":
         return None
@@ -551,31 +635,26 @@ def entrypoint(debug=""):
     """
     Ultralytics entrypoint function for parsing and executing command-line arguments.
 
-    This function serves as the main entry point for the Ultralytics CLI, parsing  command-line arguments and
+    This function serves as the main entry point for the Ultralytics CLI, parsing command-line arguments and
     executing the corresponding tasks such as training, validation, prediction, exporting models, and more.
 
     Args:
-        debug (str, optional): Space-separated string of command-line arguments for debugging purposes. Default is "".
+        debug (str, optional): Space-separated string of command-line arguments for debugging purposes.
 
-    Returns:
-        (None): This function does not return any value.
+    Examples:
+        Train a detection model for 10 epochs with an initial learning_rate of 0.01:
+        >>> entrypoint("train data=coco8.yaml model=yolov8n.pt epochs=10 lr0=0.01")
+
+        Predict a YouTube video using a pretrained segmentation model at image size 320:
+        >>> entrypoint("predict model=yolov8n-seg.pt source='https://youtu.be/LNwODJXcvt4' imgsz=320")
+
+        Validate a pretrained detection model at batch-size 1 and image size 640:
+        >>> entrypoint("val model=yolov8n.pt data=coco8.yaml batch=1 imgsz=640")
 
     Notes:
         - For a list of all available commands and their arguments, see the provided help messages and the Ultralytics
           documentation at https://docs.ultralytics.com.
         - If no arguments are passed, the function will display the usage help message.
-
-    Example:
-        ```python
-        # Train a detection model for 10 epochs with an initial learning_rate of 0.01
-        entrypoint("train data=coco8.yaml model=yolov8n.pt epochs=10 lr0=0.01")
-
-        # Predict a YouTube video using a pretrained segmentation model at image size 320
-        entrypoint("predict model=yolov8n-seg.pt source='https://youtu.be/LNwODJXcvt4' imgsz=320")
-
-        # Validate a pretrained detection model at batch-size 1 and image size 640
-        entrypoint("val model=yolov8n.pt data=coco8.yaml batch=1 imgsz=640")
-        ```
     """
     args = (debug.split(" ") if debug else ARGV)[1:]
     if not args:  # no arguments passed
@@ -713,7 +792,18 @@ def entrypoint(debug=""):
 
 # Special modes --------------------------------------------------------------------------------------------------------
 def copy_default_cfg():
-    """Copy and create a new default configuration file with '_copy' appended to its name, providing usage example."""
+    """
+    Copy and create a new default configuration file with '_copy' appended to its name, providing a usage example.
+
+    This function duplicates the existing default configuration file and appends '_copy' to its name in the current
+    working directory.
+
+    Examples:
+        Copy the default configuration file and use it in a YOLO command:
+        >>> copy_default_cfg()
+        >>> # Example YOLO command with this new custom cfg:
+        >>> # yolo cfg='default_copy.yaml' imgsz=320 batch=8
+    """
     new_file = Path.cwd() / DEFAULT_CFG_PATH.name.replace(".yaml", "_copy.yaml")
     shutil.copy2(DEFAULT_CFG_PATH, new_file)
     LOGGER.info(

ultralytics/utils/torch_utils.py

@@ -21,6 +21,7 @@ from ultralytics.utils import (
     DEFAULT_CFG_DICT,
     DEFAULT_CFG_KEYS,
     LOGGER,
+    NUM_THREADS,
     PYTHON_VERSION,
     TORCHVISION_VERSION,
     __version__,
@@ -172,6 +173,8 @@ def select_device(device="", batch=0, newline=False, verbose=True):
         s += f"CPU ({get_cpu_info()})\n"
         arg = "cpu"
 
+    if arg in {"cpu", "mps"}:
+        torch.set_num_threads(NUM_THREADS)  # reset OMP_NUM_THREADS for cpu training
     if verbose:
         LOGGER.info(s if newline else s.rstrip())
     return torch.device(arg)