bug captured by mypy

mypy.ini

@@ -0,0 +1,16 @@
+[mypy]
+ignore_missing_imports = True
+; disallow_untyped_defs = True
+; disallow_incomplete_defs = True
+; check_untyped_defs = True
+; warn_unused_ignores = True
+; warn_redundant_casts = True
+; warn_unused_configs = True
+; warn_return_any = True
+; warn_unreachable = True
+; show_error_codes = True
+; pretty = True
+; strict_optional = False
+
+[mypy-scipy.*]
+ignore_errors = True

openptv_python/calibration.py

@@ -169,7 +169,7 @@ def from_file(self, ori_file: str, add_file: str) -> None:
         -------
         - Ex, In, G, addp: Calibration object parts without multimedia lookup table.
         """
-        if not pathlib.Path(ori_file).exists:
+        if not pathlib.Path(ori_file).exists():
             raise IOError(f"File {ori_file} does not exist")
 
         with open(ori_file, "r", encoding="utf-8") as fp:

openptv_python/track.py

@@ -241,7 +241,7 @@ def angle_acc(
         angle = 0
     else:
         angle = (200.0 / math.pi) * math.acos(
-            sum([v0[i] * v1[i] for i in range(3)])
+            math.fsum([v0[i] * v1[i] for i in range(3)])
             / (math.dist(start, pred) * math.dist(start, cand))
         )
 
@@ -373,7 +373,7 @@ def candsearch_in_pix_rest(
         # binarized search for start point of candidate search
         j0, dj = num_targets // 2, num_targets // 4
         while dj > 1:
-            j0 += dj if next_frame[j0, 1] < ymin else -dj
+            j0 += dj if next_frame[j0].y < ymin else -dj
             dj //= 2
 
         j0 -= 12 if j0 >= 12 else j0  # due to trunc