click-loguru 0.3.4

Logging to stderr and file for click applications.

click_loguru initializes loguru for logging to stderr and (optionally) a file for use with a click CLI.

If your click application uses subcommands (via @click.group()), log files will include the subcommand in the name. Log files are numbered, with a retention policy specified. Log files can be enabled or disabled per-subcommand and written to a subdirectory your application specifies.

Global options control verbose, quiet, and logfile creation. The values of these global options are accessible from your application.

Instantiation is from a single class, ClickLoguru, with the arguments of the name and version of your application. Optional keyworded arguments are the integer retention to set the number of log files retained per-application to values other than the default (4), log_dir_parent to set the location of the log file directory other than its default value of ./logs, file_log_level to set the level of logging to the file other than the default of DEBUG, and stderr_log_level which by default is set to INFO.

The logging_options method returns a decorator to be used for the CLI method which defines the global options that allows control of quiet, verbose, and logfile booleans.

The stash_subcommand method returns a decorator to be used for the CLI method for applications which define subcommands.

The init_logger method returns a decorator which must be used for each subcommand. It allows override of the default log_dir_parent established at instantiation, as well as turning off file logging for that command by setting logfile to False.

The log_elapsed_time method returns a decorator which causes the elapsed time for the subcommand to be emitted at the DEBUG level.

The get_global_options method returns the context object associated with the global options. The context object is printable. The attributes of the context object are the booleans verbose, quiet, and logfile, the string subcommand showing the subcommand that was invoked, and logfile_handler_id if your code wishes to manipulate the handler directly.

See the file tests/__init__.py for usage examples.

Prerequisites

Python 3.6 or greater is required. This package is tested under Linux and MacOS using Python 3.7.

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