{"library":"ml-collections","title":"ML Collections","description":"ML Collections is a library of Python collections designed for ML use cases. It provides dict-like data structures, primarily `ConfigDict` and `FrozenConfigDict`, which offer dot-based access, type safety, and other features useful for managing experiment configurations in a structured way. The library is actively maintained, with its current version being 1.1.0, and receives regular updates.","language":"python","status":"active","last_verified":"Thu May 14","install":{"commands":["pip install ml-collections"],"cli":null},"imports":["from ml_collections import config_dict","from ml_collections import config_dict","from ml_collections import config_dict","from ml_collections import config_flags","from ml_collections import config_flags"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"from ml_collections import config_dict\n\n# Create a ConfigDict\ncfg = config_dict.ConfigDict()\n\n# Assign values with dot notation\ncfg.learning_rate = 0.001\ncfg.optimizer = 'Adam'\ncfg.model = config_dict.ConfigDict()\ncfg.model.name = 'ResNet50'\ncfg.model.num_layers = 50\n\n# Access values\nprint(f\"Learning rate: {cfg.learning_rate}\")\nprint(f\"Model name: {cfg.model.name}\")\n\n# ConfigDicts are type-safe (mostly)\ntry:\n    cfg.learning_rate = 'high' # This will raise a TypeError\nexcept TypeError as e:\n    print(f\"Caught expected error: {e}\")\n\n# Integer can be assigned to float fields\ncfg.weight_decay = 1e-5\ncfg.weight_decay = 0 # This works as int -> float conversion is allowed\nprint(f\"Weight decay: {cfg.weight_decay}\")\n","lang":"python","description":"This example demonstrates how to create a `ConfigDict`, assign and access values using dot notation, and illustrates its type-safe behavior. It also shows the exception for assigning integers to float fields.","tag":null,"tag_description":null,"last_tested":"2026-04-25","results":[{"runtime":"python:3.10-alpine","exit_code":0},{"runtime":"python:3.10-slim","exit_code":0},{"runtime":"python:3.11-alpine","exit_code":0},{"runtime":"python:3.11-slim","exit_code":0},{"runtime":"python:3.12-alpine","exit_code":0},{"runtime":"python:3.12-slim","exit_code":0},{"runtime":"python:3.13-alpine","exit_code":0},{"runtime":"python:3.13-slim","exit_code":0},{"runtime":"python:3.9-alpine","exit_code":0},{"runtime":"python:3.9-slim","exit_code":0}]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-14","installed_version":"0.1.1","pypi_latest":"1.1.0","is_stale":true,"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":1.9,"avg_import_s":0.42,"wheel_type":"wheel"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.3,"mem_mb":7.6,"disk_size":"21.4M"},{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.37,"mem_mb":7.6,"disk_size":"21.4M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.7,"import_time_s":0.18,"mem_mb":7.6,"disk_size":"23M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.22,"mem_mb":7.6,"disk_size":"23M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.51,"mem_mb":8.2,"disk_size":"23.7M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.73,"mem_mb":8.2,"disk_size":"23.7M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.8,"import_time_s":0.48,"mem_mb":8.2,"disk_size":"25M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.63,"mem_mb":8.2,"disk_size":"25M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.41,"mem_mb":8.2,"disk_size":"15.6M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.51,"mem_mb":8.2,"disk_size":"15.6M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.6,"import_time_s":0.47,"mem_mb":8.2,"disk_size":"17M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.49,"mem_mb":8.2,"disk_size":"17M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.39,"mem_mb":8.7,"disk_size":"15.3M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.6,"mem_mb":8.7,"disk_size":"15.2M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.7,"import_time_s":0.4,"mem_mb":8.7,"disk_size":"17M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.58,"mem_mb":8.7,"disk_size":"16M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.26,"mem_mb":7.3,"disk_size":"22.8M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.35,"mem_mb":7.3,"disk_size":"22.8M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.8,"import_time_s":0.23,"mem_mb":7.3,"disk_size":"24M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"ml-collections","exit_code":0,"wheel_type":null,"failure_reason":null,"import_side_effects":null,"install_time_s":null,"import_time_s":0.37,"mem_mb":7.3,"disk_size":"24M"}]}}