5. Belle II Python Interface

The Belle II Software has an extensive interface to the Python 3 scripting language: All configuration and steering is done via python and in principle also simple algorithms can be implemented directly in python. All main functions are implemented in a module called basf2 and most people will just start their steering file or script with

import basf2
main = basf2.Path()

• 5.1. Modules and Paths
  • create_path()
  • register_module()
  • set_module_parameters()
  • print_params()
  • print_path()
  • process()
  • 5.1.1. The Module Object
  • 5.1.2. The Path Object
  • 5.1.3. Other Related Classes
• 5.2. Logging
  • LogLevel
  • set_log_level()
  • set_debug_level()
  • basf2.logging
  • 5.2.1. Creating Log Messages
  • 5.2.2. The Logging Configuration Objects
• 5.3. Module Statistics
  • basf2.statistics
  • ProcessStatistics
• 5.4. Conditions Database
  • 5.4.1. Conditions Database Overview
  • 5.4.2. Configuring the Conditions Database
  • 5.4.3. Offline Mode
  • 5.4.4. Creation of new payloads
• 5.5. Additional Functions
  • find_file()
  • get_file_metadata()
  • get_random_seed()
  • log_to_console()
  • log_to_file()
  • reset_log()
  • set_nprocesses()
  • set_random_seed()
  • set_streamobjs()
• 5.6. Other Modules
  • 5.6.1. basf2.utils - Helper functions for printing basf2 objects
  • get_terminal_width()
  • is_mod_function()
  • list_functions()
  • pretty_print_description_list()
  • pretty_print_module()
  • pretty_print_table()
  • print_all_modules()
  • print_params()
  • print_path()
  • 5.6.2. basf2.pickle_path - Functions necessary to pickle and unpickle a Path
  • check_pickle_path()
  • deserialize_conditions()
  • deserialize_module()
  • deserialize_path()
  • deserialize_value()
  • get_path_from_file()
  • make_code_pickable()
  • serialize_conditions()
  • serialize_module()
  • serialize_path()
  • serialize_value()
  • write_path_to_file()
  • 5.6.3. B2Tools
  • 5.6.4. b2test_utils - Helper functions useful for test scripts
  • check_error_free()
  • clean_working_directory()
  • configure_logging_for_tests()
  • get_object_with_name()
  • get_streamer_checksums()
  • is_ci()
  • local_software_directory()
  • print_belle2_environment()
  • require_file()
  • run_in_subprocess()
  • safe_process()
  • set_loglevel()
  • show_only_errors()
  • skip_test()
  • skip_test_if_central()
  • skip_test_if_light()
  • temporary_set_environment()
  • working_directory()
  • 5.6.5. conditions_db
  • BearerAuth
  • ConditionsDB
  • PayloadInformation
  • chunks()
  • enable_debugging()
  • encode_name()
  • file_checksum()
  • get_cdb_authentication_token()
  • require_database_for_test()
  • set_cdb_authentication_token()
  • 5.6.6. conditions_db.iov
  • IntervalOfValidity
  • IoVSet
  • 5.6.7. hep_ipython_tools
  • IPythonHandler
  • handler
  • 5.6.8. iov_conditional - Functions to Execute Paths Depending on Experiment Phases
  • PHASE2_IOVS
  • make_conditional_at()
  • phase_2_conditional()
  • 5.6.9. pdg - access particle definitions
  • add_particle()
  • conjugate()
  • from_name()
  • from_names()
  • get()
  • load()
  • load_default()
  • search()
  • to_name()
  • to_names()
  • 5.6.10. rundb - Helper classes for retrieving information from the RunDB
  • RunDB
  • 5.6.11. terminal_utils - Helper functions for input from/output to a terminal
  • ANSIColors
  • InputEditor
  • Pager