Add more documentation

ecoinvent_migrate/data_io.py

@@ -10,7 +10,9 @@
 
 
 def get_change_report_filepath(version: str, release: EcoinventRelease) -> Path:
-    """Get the filepath to the Excel change report file"""
+    """Get the filepath to the Excel change report file.
+
+    Download a list of extra files from ecoinvent and do pattern matching."""
     files = release.list_extra_files(version)
     candidates = [key for key in files if "change report" in key.lower() and "annex" in key.lower()]
     if not candidates:
@@ -59,6 +61,7 @@ def setup_project(
     ecoinvent_username: Optional[str] = None,
     ecoinvent_password: Optional[str] = None,
 ) -> None:
+    """Switch to or create a Brightway project, and install the source and target databases."""
     bd.projects.set_current(project_name)
 
     if f"ecoinvent-{source_version}-{system_model}" not in bd.databases:
@@ -90,6 +93,16 @@ def setup_project(
 
 
 def get_brightway_databases(source_version: str, target_version: str, system_model: str):
+    """Get database names and process caches for source and target databases.
+
+    Returns:
+
+    * `source_db_name`: str. Standardized name for ecoinvent based on `ecoinvent_interface` standard
+    * `target_db_name`: str. Standardized name for ecoinvent based on `ecoinvent_interface` standard
+    * `source_lookup`: dict. Dictionary from attribute tuple (name, location, reference product) to `Node` object.
+    * `target_lookup`: dict. Dictionary from attribute tuple (name, location, reference product) to `Node` object.
+
+    """
     source_db_name = f"ecoinvent-{source_version}-{system_model}"
     target_db_name = f"ecoinvent-{target_version}-{system_model}"
     if source_db_name not in bd.databases:

ecoinvent_migrate/datapackage.py

@@ -19,6 +19,17 @@ def write_datapackage(
     version: str = "1.0.0",
     description: Optional[str] = None,
 ) -> Path:
+    """Write given `data` to a Frictionless Data Datapackage.
+
+    Input args for datapackage:
+
+    * output_version (str, default is "1.0.0"): [Datapackage version number](https://specs.frictionlessdata.io/data-package/#version)
+    * licenses (list, default is CC-BY): Licenses following the [datapackage standard](https://specs.frictionlessdata.io/data-package/#licenses)
+    * description (str, default is auto-generated): Description of generated datapackage.
+
+    If `output_directory` isn't provided, a `platformdirs.user_data_dir` is used.
+
+    Returns the `pathlib.Path` of the created file."""
     now = datetime.now(timezone.utc).isoformat()
     if licenses is None:
         licenses = [

ecoinvent_migrate/wrangling.py

@@ -14,7 +14,9 @@ def isnan(o: Union[str, Number]) -> bool:
 
 
 def split_by_semicolon(row: dict, version: str) -> list[dict]:
-    """Possible split a data row into"""
+    """Turn a data `row` into one or more dictionaries.
+
+    Splits reference product and unit values by `;\n`."""
     if isinstance(row[f"Activity Name - {version}"], Number) and math.isnan(
         row[f"Activity Name - {version}"]
     ):