Add support for after and before relative dates (#1008)

Co-authored-by: Serhii A <aserhii@protonmail.com>
scrapinghub · Nov 3, 2022 · fe93313 · fe93313
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commit fe93313
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Showing 3 changed files with 15 additions and 2 deletions.
diff --git a/dateparser/data/date_translation_data/en.py b/dateparser/data/date_translation_data/en.py
@@ -189,6 +189,9 @@
         ],
         "in 1 decade": [
             "next decade"
+        ],
+        "in 2 day": [
+            "day after tomorrow"
         ]
     },
     "relative-type-regex": {
@@ -773,11 +776,13 @@
         "decades"
     ],
     "ago": [
-        "ago"
+        "ago",
+        "before"
     ],
     "in": [
         "in",
-        "from now"
+        "from now",
+        "after"
     ],
     "simplifications": [
         {

diff --git a/dateparser_data/supplementary_language_data/date_translation_data/en.yaml b/dateparser_data/supplementary_language_data/date_translation_data/en.yaml
@@ -35,9 +35,11 @@ second:
 
 ago:
     - ago
+    - before
 in:
     - in
     - from now
+    - after
 
 relative-type:
     2 day ago:
@@ -47,6 +49,8 @@ relative-type:
         - this decade
     in 1 decade:
         - next decade
+    in 2 day:
+        - day after tomorrow
     0 day ago:
         - till date
 

diff --git a/tests/test_freshness_date_parser.py b/tests/test_freshness_date_parser.py
@@ -66,6 +66,7 @@ def test_relative_past_dates_with_time_as_period(self, date_string, ago, period)
         param("100 decades", ago={'years': 1000}, period='year'),
         param('yesterday', ago={'days': 1}, period='day'),
         param('the day before yesterday', ago={'days': 2}, period='day'),
+        param('4 days before', ago={'days': 4}, period='day'),
         param('today', ago={'days': 0}, period='day'),
         param('till date', ago={'days': 0}, period='day'),
         param('an hour ago', ago={'hours': 1}, period='day'),
@@ -591,6 +592,7 @@ def test_relative_past_dates(self, date_string, ago, period):
         param("100 decades", ago={'years': 1000}, period='year'),
         param('yesterday', ago={'days': 1}, period='day'),
         param('the day before yesterday', ago={'days': 2}, period='day'),
+        param('10 days before', ago={'days': 10}, period='day'),
         param('today', ago={'days': 0}, period='day'),
         param('till date', ago={'days': 0}, period='day'),
         param('an hour ago', ago={'hours': 1}, period='day'),
@@ -1084,6 +1086,8 @@ def test_normalized_relative_dates(self, date_string, ago, period):
         param('next decade', in_future={'years': 10}, period='year'),
         param('in a decade', in_future={'years': 10}, period='year'),
         param('tomorrow', in_future={'days': 1}, period='day'),
+        param('day after tomorrow', in_future={'days': 2}, period='day'),
+        param('after 4 days', in_future={'days': 4}, period='day'),
         param('today', in_future={'days': 0}, period='day'),
         param('till date', in_future={'days': 0}, period='day'),
         param('in an hour', in_future={'hours': 1}, period='day'),