fix: task slicing range

main.py

@@ -65,11 +65,13 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
     wb: Workbook = None
     filename: str = None
     column: ColumnMapping = None
-    limit = 0
+    start, end, limit = 2, 0, 0
     
-    def begin(opts: dict, args: dict):
-        nonlocal status
+    def begin(opts: dict, args: dict, i, j):
+        nonlocal status, start, end
         if status != Status.READY: raise ValueError(status)
+        if i: start += i
+        if j: end = j
         options.update(opts)
         status = Status.RUNNING
         parameters.update(args)
@@ -91,7 +93,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
         result = dict()
         col = headers.index(header) + 1
         
-        for row in range(options.get('start'), limit + 1):
+        for row in range(start, limit + 1):
             key = str(wb.active.cell(row, col).value)
             result[key] = result.get(key, 0) + 1
         
@@ -315,7 +317,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
         source = load_workbook(buffer)
         source.active.cell(1, col).value = column.sent
         
-        for row in range(options.get('start'), limit + 1):
+        for row in range(start, limit + 1):
             c1 = source.active.cell(row, col)
             c2 = wb.active.cell(row, col)
             if not (c1.value and str(c1.value).strip()):
@@ -403,13 +405,13 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
                     logger.warning("[%d/%d] Exhausted all allowed attempts; skipping", index-1, limit-1)
                     raise Skip()
                 
-                if options.get('slice') and (start := options.get('start')) and (end := options.get('limit')):
-                    if index < start or index >= start + end:
-                        logger.info("[%d/%d] Not planned; skipping '%s'", index-1, limit-1, email)
-                        raise Next()
+                if options.get('slice'):
                     if (items := options.get('subcategories')) and (item := str(cell(index, column.region).value)) not in items:
                         logger.info("[%d/%d] Value '%s' not enlisted; skipping '%s'", index-1, limit-1, item, email)
                         raise Next()
+                    if index < start or index >= start + end:
+                        logger.info("[%d/%d] Not planned; skipping '%s'", index-1, limit-1, email)
+                        raise Next()
                 
                 if (sent := cell(index, column.sent).value) is not None and str(sent).strip():
                     logger.info("[%d/%d] Already visited; skipping '%s'", index-1, limit-1, email)