fix in method tesseract_parameters

aiopytesseract/base_command.py

@@ -226,7 +226,7 @@ async def _build_cmd_args(
     if config:
         for option, value in config:
             cmd_args.append("-c")
-            cmd_args.append(f"{option}={value} ")
+            cmd_args.append(f"{option}={value}")
 
     extension = reversed(output_extension.split())
     for ext in extension:

aiopytesseract/commands.py

@@ -168,14 +168,23 @@ async def tesseract_parameters(
     raw_data: bytes = await proc.stdout.read()  # type: ignore
     data = raw_data.decode(encoding)
     params = []
-    for line in data.split("\n"):
+    # [1:] - skip first line with text: "Tesseract parameters:\n"
+    for line in data.split("\n")[1:]:
         param = re.search(r"(\w+)\s+(-?\d+.?\d*)\s+(.*)[^\n]$", line)
         if param:
             params.append(
                 cattr.structure_attrs_fromtuple(
-                    [param.group(1), param.group(2), param.group(3)], Parameter  # type: ignore
+                    [param.group(1), param.group(3), param.group(2)], Parameter  # type: ignore
                 )
             )
+        else:
+            param = re.search(r"(\w+)\s+(.*)[^\n]$", line)
+            if param:
+                params.append(
+                    cattr.structure_attrs_fromtuple(
+                        [param.group(1), param.group(2)], Parameter  # type: ignore
+                    )
+                )
     return sorted(params, key=lambda p: p.name)
 
 

aiopytesseract/models/parameter.py

@@ -1,8 +1,12 @@
-from dataclasses import dataclass
+from typing import Union
 
+from attr import converters, field, frozen, validators
 
-@dataclass(frozen=True)
+
+@frozen
 class Parameter:
-    name: str
-    value: float
-    description: str
+    name: str = field(validator=validators.instance_of(str))
+    description: str = field(validator=validators.instance_of(str))
+    value: Union[None, str] = field(
+        default=None, converter=converters.default_if_none("-")  # type: ignore
+    )

setup.cfg

@@ -38,6 +38,7 @@ keywords = "asyncio", "ocr", "tesseract"
 packages = find:
 install_requires =
   aiofiles >= 0.8.0
+  attrs >= 22.1.0
   cattrs >= 22.1.0
 python_requires = >= 3.8
 
@@ -90,7 +91,7 @@ disallow_untyped_decorators = True
 disallow_any_generics = True
 
 [tox:tox]
-envlist = py{38,39,310,311,312},pypy{3.8,3.9}
+envlist = py{38,39,310,311,312},pypy{3.8,3.9,3.10}
 
 [testenv]
 deps = -rrequirements-dev.txt

tests/test_commands.py

@@ -79,6 +79,14 @@ async def test_tesseract_parameters():
     assert isinstance(parameters[0], Parameter)
 
 
+@pytest.mark.xfail(
+    reason="The number of parameters in Tesseract can vary between releases."
+)
+async def test_len_tesseract_parameters():
+    parameters = await aiopytesseract.tesseract_parameters()
+    assert len(parameters) == 627
+
+
 @pytest.mark.parametrize(
     "func, timeout",
     [