Where Do I Find Results?

CsvPath serializes results for your future use

When you run a CsvPaths instance, your results are stored in several files in an archive directory. The results are the serialized version of all the run data that is accessible through the CsvPaths instance ResultsManager. If your config does not include an archive pointer the folder ./archive will be created, if needed, and used.

CsvPaths's results manager makes results of named-paths runs available under the named-paths name. A named-paths name identifies a set of csvpaths that are run as a unit. You request the results of a run like this:

paths = CsvPaths()
paths.paths_manager.add_named_paths_from_file( name="autogen", file_path="assets/response.csvpath")
paths.file_manager.add_named_file(name="data", path="assets/Medicare_Claims_data-550.csv")
paths.collect_by_line(pathsname="autogen", filename="data")
results = paths.results_manager.get_named_results('autogen')

What you get back is a list of Result, one result for each of the CsvPath instances that ran one of the csvpaths in the named-paths group. The results each hold the following information:

Directory structure and files

Data	File	Description
CSV Data	data.csv	This file contains all the lines matched or the lines that did not match, depending on if you set return-mode to match (the default) or no-match. If you use the fast_forward, fast_forward_paths, or fast_forward_by_line methods this file will be empty.
Metadata	meta.json	The metadata is the user defined metadata plus the modes and the csvpath identity. By default the csvpath identity is the index of the csvpath in the named-paths group. The metadata also has the full original external comments in one field, including the other metadata fields that were broken out individually.
Runtime data	meta.json	The runtime fields are the data available under the csvpath data type accessed in print references. For e.g. $.csvpath.line_number.
Printouts	printouts.txt	Print statements and validation messages go in this file. printouts.txt contains all the Printers' output. If you have multiple Printer instance you can print to one of them specifically; otherwise, by default the print string will go to all Printers. In printouts.txt each Printer's content is prefixed by a separator line like: ---- PRINTOUT: my_printer_name
Variables	vars.json	Variables is a dictionary of all the variables captured during the csvpath run. They are only from the specific csvpath this Result represents. If needed, the ResultsManager can provide a dictionary collected as a union of all the Result variables of every csvpath in the named-paths group.
Errors	errors.json	These are the errors collected, if any. Errors are collected by default; however, you can turn off error collection in the error policy in config.ini. Unlike raise, print, stop, and fail, there is no mode setting to override config.ini's error collection setting. The assumption is that in the usual case you don't want to drop errors, and that if you do it is an operational consideration, not a csvpath writer's choice.
Unmatched lines	unmatched.csv	If unmatched-mode is set to keep, a file named unmatched.csv is created to provide access to all the lines that were not returned during the run. If unmatched-mode is no-keep, the default, this file will not be created.

Your archive directory will look like this.

An example of the archive directory structure

In this case, we are using an autogenerated csvpath. We ran it three times from a file called main.py using the default archive directory. The .csvpath file had three csvpaths in it. You can see their identities in the names of the directories in the fourth column. Each csvpath has its own results files, visible in the last column.

The directory structure is:

meta.json

The metadata file looks like this:

Notice the metadata key and the runtime_data key. This file holds both of those data sets.

errors.json

Errors.json has this structure.

In this case, the error message is a clear tell that this is a built-in validation error. When your own rules fail, most often you want those messages in the main printout stream.