patreon: Update importer for this month's change.

Literally all they did was change the title of the amount column
(maybe it doesn't assume USD anymore?).

import2ledger/importers/patreon.py

@@ -5,7 +5,7 @@ from . import _csv
 from .. import strparse
 
 class IncomeImporter(_csv.CSVImporterBase):
-    AMOUNT_KEY = 'Pledge $'
+    AMOUNT_KEY = 'Pledge Amount'
     DATE_KEY = 'Last Charge Date'
     STATUS_KEY = 'Last Charge Status'
     NEEDED_FIELDS = frozenset([
@@ -23,6 +23,13 @@ class IncomeImporter(_csv.CSVImporterBase):
         'currency': 'USD',
     }
 
+    def __init_subclass__(cls):
+        cls.NEEDED_FIELDS = frozenset([
+            cls.AMOUNT_KEY,
+            cls.DATE_KEY,
+            cls.STATUS_KEY,
+        ])
+
     def _read_row(self, row):
         if row[self.STATUS_KEY] != 'Paid':
             return None
@@ -93,14 +100,14 @@ class VATImporter(FeeImporterBase):
     }
 
 
-class Income2020AugustImporter(IncomeImporter):
+
+class Income2020OctoberImporter(IncomeImporter):
+    AMOUNT_KEY = 'Pledge $'
+
+
+class Income2020AugustImporter(Income2020OctoberImporter):
     DATE_KEY = 'Charged On Date'
     STATUS_KEY = 'Charge Status'
-    NEEDED_FIELDS = frozenset([
-        IncomeImporter.AMOUNT_KEY,
-        DATE_KEY,
-        STATUS_KEY,
-    ])
 
 
 class Income2017Importer(_csv.CSVImporterBase):

setup.py

@@ -30,7 +30,7 @@ REQUIREMENTS['tests_require'] = [
 setup(
     name='import2ledger',
     description="Import different sources of financial data to Ledger",
-    version='1.2.0',
+    version='1.3.0',
     author='Brett Smith',
     author_email='brettcsmith@brettcsmith.org',
     license='GNU AGPLv3+',

tests/data/PatreonPatronReport_2020-11-01.csv

@@ -0,0 +1,3 @@
+Name,Email,Twitter,Discord,Patron Status,Follows You,Lifetime Amount,Pledge Amount,Charge Frequency,Tier,Addressee,Street,City,State,Zip,Country,Phone,Patronage Since Date,Max Amount,Last Charge Date,Last Charge Status,Additional Details,User ID,Last Updated
+Alex Jones,ajones@example.com,,,Active patron,No,$28,$2,monthly,Even tier,,,,,,,,2019-10-30 18:25:15.457830,$2,2020-08-01 18:21:04,Paid,,1234567,2020-08-12 12:34:31.348413
+Breonna,breonna@example.org,patreonb,patreond#0123,Active patron,No,$5,$5,monthly,Odd tier,,,,,,,,2020-08-02 11:59:15.365305,$5,2020-08-02 12:00:02,Paid,,234567,2020-08-12 12:43:08.745681

tests/data/imports.yml

@@ -29,6 +29,24 @@
       currency: USD
 
 - source: PatreonPatronReport_2020-10-01.csv
+  importer: patreon.Income2020OctoberImporter
+  expect:
+    - payee: Alex Jones
+      email: ajones@example.com
+      tier: Even tier
+      patreon_id: "1234567"
+      date: !!python/object/apply:datetime.date [2020, 8, 1]
+      amount: !!python/object/apply:decimal.Decimal ["2"]
+      currency: USD
+    - payee: Breonna
+      email: breonna@example.org
+      tier: Odd tier
+      patreon_id: "234567"
+      date: !!python/object/apply:datetime.date [2020, 8, 2]
+      amount: !!python/object/apply:decimal.Decimal ["5.00"]
+      currency: USD
+
+- source: PatreonPatronReport_2020-11-01.csv
   importer: patreon.IncomeImporter
   expect:
     - payee: Alex Jones