Fix selection codes for plates with >15 rows

Also, the "only one column" is now called only by the functions that require it.

robotools/__init__.py

@@ -20,7 +20,7 @@
 from .utils import DilutionPlan, get_trough_wells
 from .worklists import BaseWorklist, CompatibilityError
 
-__version__ = "1.11.0"
+__version__ = "1.11.1"
 __all__ = (
     "BaseWorklist",
     "CompatibilityError",

robotools/evotools/commands.py

@@ -68,7 +68,7 @@ def evo_get_selection(rows: int, cols: int, selected: np.ndarray) -> str:
         Code string for well selection of pipetting actions in EvoWare scripts (.esc)
     """
     # apply bit mask with 7 bits, adapted from function detailed in EvoWare manual
-    selection = f"0{to_hex(cols)}{rows:02d}"
+    selection = f"{to_hex(cols):0>2}{to_hex(rows):0>2}"
     bit_counter = 0
     bit_mask = 0
     for x in range(cols):
@@ -83,16 +83,6 @@ def evo_get_selection(rows: int, cols: int, selected: np.ndarray) -> str:
     if bit_counter > 0:
         selection += chr(bit_mask + 48)
 
-    # check if wells from more than one column are selected and raise Exception if so
-    check = 0
-    for column in selected.transpose():
-        if sum(column) >= 1:
-            check += 1
-    if check >= 2:
-        raise ValueError(
-            "Wells from more than one column are selected.\nSelect only wells from one column per pipetting action."
-        )
-
     return selection
 
 
@@ -212,6 +202,16 @@ def prepare_evo_aspirate_dispense_parameters(
     return wells_list, labware_position, volume_list, liquid_class, tecan_tips
 
 
+def require_single_column_selection(selection: np.ndarray):
+    """Raises an error if wells from more than one column are selected."""
+    ncols = np.any(selection > 0, axis=0).sum()
+    if ncols >= 2:
+        raise ValueError(
+            "Wells from more than one column are selected.\nSelect only wells from one column per pipetting action."
+        )
+    return
+
+
 def evo_aspirate(
     *,
     n_rows: int,
@@ -283,6 +283,7 @@ def evo_aspirate(
 
     # convert selection from list of well ids to numpy array with same dimensions as target labware (1: well is selected, 0: well is not selected)
     selected = evo_make_selection_array(n_rows, n_columns, wells)
+    require_single_column_selection(selected)
     # create code string containing information about target well(s)
     code_string = evo_get_selection(n_rows, n_columns, selected)
     return f'B;Aspirate({tip_selection},"{liquid_class}",{tip_volumes}0,0,0,0,{labware_position[0]},{labware_position[1]},1,"{code_string}",0,{arm});'
@@ -359,6 +360,7 @@ def evo_dispense(
 
     # convert selection from list of well ids to numpy array with same dimensions as target labware (1: well is selected, 0: well is not selected)
     selected = evo_make_selection_array(n_rows, n_columns, wells)
+    require_single_column_selection(selected)
     # create code string containing information about target well(s)
     code_string = evo_get_selection(n_rows, n_columns, selected)
     return f'B;Dispense({tip_selection},"{liquid_class}",{tip_volumes}0,0,0,0,{labware_position[0]},{labware_position[1]},1,"{code_string}",0,{arm});'

robotools/evotools/test_commands.py

@@ -8,22 +8,12 @@
     evo_wash,
     prepare_evo_aspirate_dispense_parameters,
     prepare_evo_wash_parameters,
+    require_single_column_selection,
 )
 from robotools.evotools.types import Tip
 
 
 def test_evo_get_selection():
-    with pytest.raises(ValueError, match="from more than one column"):
-        evo_get_selection(
-            rows=2,
-            cols=3,
-            selected=np.array(
-                [
-                    [True, False, False],
-                    [False, True, False],
-                ]
-            ),
-        )
     selection = evo_get_selection(
         rows=2,
         cols=3,
@@ -35,6 +25,9 @@ def test_evo_get_selection():
         ),
     )
     assert selection == "03023"
+
+    sel384 = evo_get_selection(16, 24, selected=np.full((16, 24), 1, dtype=bool))
+    assert sel384.startswith("1810")
     pass
 
 
@@ -158,6 +151,13 @@ def test_prepare_evo_aspirate_dispense_parameters(self):
         assert actual == expected
 
 
+def test_require_single_column():
+    require_single_column_selection(np.eye(1))
+    with pytest.raises(ValueError, match="more than one"):
+        require_single_column_selection(np.eye(2))
+    pass
+
+
 class TestEvoAspirate:
     def test_evo_aspirate1(self) -> None:
         cmd = evo_aspirate(