yacwc

bear_utils.py

@@ -0,0 +1,24 @@
+from math import sin, cos, sqrt, atan2, radians
+
+
+def get_distance_from_home(lat_b, lon_b):
+    lat_a = 42.295940
+    lon_a = -83.751960
+
+    return distance_lat_lon(lat_a, lon_a, lat_b, lon_b)
+
+
+def distance_lat_lon(lat_a, lon_a, lat_b, lon_b):
+
+    R = 6373.0
+    R = 6373.0
+    lat1 = radians(lat_a)
+    lon1 = radians(lon_a)
+    lat2 = radians(lat_b)
+    lon2 = radians(lon_b)
+    dlon = lon2 - lon1
+    dlat = lat2 - lat1
+    a = sin(dlat / 2) ** 2 + cos(lat1) * cos(lat2) * sin(dlon / 2) ** 2
+    c = 2 * atan2(sqrt(a), sqrt(1 - a))
+
+    return R * c

data.py

@@ -1,27 +1,29 @@
 # %%
 import os
+from unicodedata import category
 import torch
 from PIL import Image
-import torchvision
+import sys
-from torchvision.models.detection.faster_rcnn import FastRCNNPredictor
 import json
 import torch
-from torchvision import transforms as T
+import transforms as T
 import os
+import numpy as np
 
-device = torch.device('cuda') if torch.cuda.is_available() else torch.device('cpu')
+device = torch.device("cuda") if torch.cuda.is_available() else torch.device("cpu")
 
-if sys.platform == 'win32':
+if sys.platform == "win32":
     PATH_ROOT = r"D:\ishan\ml\inaturalist\\"
 else:
     raise NotImplementedError("Not defined for this platform")
 
+
 def get_transform(train):
-    transforms = []
+    trsf = []
-    transforms.append(T.ToTensor())
+    trsf.append(T.ToTensor())
     if train:
-        transforms.append(T.RandomHorizontalFlip(0.5))
+        trsf.append(T.RandomHorizontalFlip(0.5))
-    return T.Compose(transforms)
+    return T.Compose(trsf)
 
 
 def create_map(list_in, from_key, to_key):
@@ -32,40 +34,45 @@ def create_map(list_in, from_key, to_key):
 
 
 class iNaturalistDataset(torch.utils.data.Dataset):
-    def __init__(self, validation=False, train=False, transforms = None, species = None):
+    def __init__(self, validation=False, train=False, species=None):
 
         self.validation = validation
         self.train = train
 
-        if (self.train or self.validation) or (self.train and self.validation)
+        if (not self.train and not self.validation) or (self.train and self.validation):
             raise Exception("Need to do either train or validation")
-        
-        self.transforms = get_transform(self.train)
 
+        self.transform = get_transform(self.train)
 
         if validation:
-            json_path = os.path.join(PATH_ROOT, "val_2017_bboxes","val_2017_bboxes.json")
+            json_path = os.path.join(
+                PATH_ROOT, "val_2017_bboxes", "val_2017_bboxes.json"
+            )
         elif train:
             json_path = os.path.join(
-                PATH_ROOT, "train_2017_bboxes","train_2017_bboxes.json"
+                PATH_ROOT, "train_2017_bboxes", "train_2017_bboxes.json"
             )
 
         with open(json_path, "r") as rj:
             f = json.load(rj)
 
+        self.raw_data = f
         categories = list()
         image_info = dict()
 
-        
+        orig_id_to_name = dict()
-
         for category in f["categories"]:
             do_add = False
+            orig_id_to_name[category["id"]] = category
             if species is None:
                 do_add = True
-            if category['name'] in species:
+            elif category["name"] in species:
-                print(category['name'])
+                print(category["name"])
+                do_add = True
+
+            if do_add:
                 categories.append(category)
-        
+
         categories = sorted(categories, key=lambda k: k["name"])
         for idx, cat in enumerate(categories):
             cat["new_id"] = idx + 1
@@ -93,13 +100,13 @@ class iNaturalistDataset(torch.utils.data.Dataset):
 
         for idx, (id, im_in) in enumerate(image_info.items()):
             im_in["idx"] = idx
-        
+
         self.images = image_info
         self.categories = categories
+        self.orig_id_to_name = orig_id_to_name
         self.idx_to_id = [x for x in self.images]
         self.num_classes = len(self.categories) + 1
         self.num_samples = len(self.images)
-        
 
     def __len__(self):
         return self.num_samples
@@ -109,18 +116,74 @@ class iNaturalistDataset(torch.utils.data.Dataset):
         c_image = self.images[idd]
         img_path = c_image["path"]
         img = Image.open(img_path).convert("RGB")
-    
+
         annot = c_image["annotation"]
         bbox = annot["bbox"]
         boxes = bbox
         target = dict()
         target["boxes"] = torch.as_tensor([boxes])
-        target["labels"] = torch.as_tensor([annot["new_category_id"]], dtype=torch.int64)
+        target["labels"] = torch.as_tensor(
-        target['image_id'] = torch.tensor([annot['image_id']])
+            [annot["new_category_id"]], dtype=torch.int64
-        target['area'] =  torch.as_tensor([annot['area']])
+        )
-        target['iscrowd'] = torch.zeros((1,), dtype=torch.int64)
+        target["image_id"] = torch.tensor([annot["image_id"]])
-        
+        target["area"] = torch.as_tensor([annot["area"]])
-        if self.transforms is not None:
+        target["iscrowd"] = torch.zeros((1,), dtype=torch.int64)
-            img, target = self.transforms(img, target)
 
-        return img, target
+        if self.transform is not None:
+            img, target = self.transform(img, target)
+
+        return img, target
+
+
+if False:
+
+    train_dataset = iNaturalistDataset(train=True)
+    loc_path = os.path.join(PATH_ROOT, "inat2017_locations", "train2017_locations.json")
+    with open(loc_path, "r") as lfile:
+        locs = json.load(lfile)
+
+    from bear_utils import get_distance_from_home
+
+    # %%
+    category_distances = dict()
+    inserts = 0
+    for loc in locs:
+        lat = loc["lat"]
+        lon = loc["lon"]
+        im_id = loc["id"]
+        if lat is None or lon is None:
+            continue
+
+        ff = get_distance_from_home(lat, lon)
+        if im_id in train_dataset.images:
+            inserts += 1
+            train_dataset.images[im_id]["distance"] = ff
+            category_id = train_dataset.images[im_id]["annotation"]["category_id"]
+
+            if category_id not in category_distances:
+                category_distances[category_id] = list()
+
+            category_distances[category_id].append(ff)
+
+    # %%
+    from EcoNameTranslator import to_common
+
+    for k, v in category_distances.items():
+        name = train_dataset.orig_id_to_name[k]
+        if np.average(np.asarray(v) < 250) > 0.1:
+            if name["supercategory"] == "Aves":
+                print(len(v), to_common([name["name"]]))
+
+    # %%
+
+    fc = sorted(
+        category_distances, key=lambda x: len(category_distances[x]), reverse=True
+    )
+    for x in fc:
+        cc = train_dataset.orig_id_to_name[x]
+        if cc["supercategory"] == "Aves":
+            ou = to_common([cc["name"]])
+            print(ou, len(category_distances[x]))
+
+
+# %%

model.py

@@ -1,11 +1,12 @@
 # %%
-from torchvision.models.detection import fasterrcnn_resnet50_fpn
+import torchvision.models.detection
+
 from torchvision.models.detection.faster_rcnn import FastRCNNPredictor
 
-def Model(num_classes):
+
-    model = fasterrcnn_resnet50_fpn(pretrained=True)
+def Model(num_classes, model_type=None):
-    num_classes = 2  # 1 class (person) + background
+    chosen_model = torchvision.models.detection.__dict__[model_type]
+    model = chosen_model(pretrained=True)
     in_features = model.roi_heads.box_predictor.cls_score.in_features
     model.roi_heads.box_predictor = FastRCNNPredictor(in_features, num_classes)
     return model
-

models/20210701_201220.json

@@ -0,0 +1,22 @@
+{
+    "categories": [
+        {
+            "supercategory": "Aves",
+            "id": 206,
+            "name": "Archilochus colubris",
+            "new_id": 1
+        },
+        {
+            "supercategory": "Aves",
+            "id": 4493,
+            "name": "Icterus galbula",
+            "new_id": 2
+        },
+        {
+            "supercategory": "Aves",
+            "id": 403,
+            "name": "Poecile atricapillus",
+            "new_id": 3
+        }
+    ]
+}

models/20210701_201841.json

@@ -0,0 +1,23 @@
+{
+    "categories": [
+        {
+            "supercategory": "Aves",
+            "id": 206,
+            "name": "Archilochus colubris",
+            "new_id": 1
+        },
+        {
+            "supercategory": "Aves",
+            "id": 4493,
+            "name": "Icterus galbula",
+            "new_id": 2
+        },
+        {
+            "supercategory": "Aves",
+            "id": 403,
+            "name": "Poecile atricapillus",
+            "new_id": 3
+        }
+    ],
+    "model_type": "fasterrcnn_mobilenet_v3_large_fpn"
+}

models/20210701_201853.json

@@ -0,0 +1,23 @@
+{
+    "categories": [
+        {
+            "supercategory": "Aves",
+            "id": 206,
+            "name": "Archilochus colubris",
+            "new_id": 1
+        },
+        {
+            "supercategory": "Aves",
+            "id": 4493,
+            "name": "Icterus galbula",
+            "new_id": 2
+        },
+        {
+            "supercategory": "Aves",
+            "id": 403,
+            "name": "Poecile atricapillus",
+            "new_id": 3
+        }
+    ],
+    "model_type": "fasterrcnn_mobilenet_v3_large_fpn"
+}

models/20210701_202607.json

@@ -0,0 +1,23 @@
+{
+    "categories": [
+        {
+            "supercategory": "Aves",
+            "id": 206,
+            "name": "Archilochus colubris",
+            "new_id": 1
+        },
+        {
+            "supercategory": "Aves",
+            "id": 4493,
+            "name": "Icterus galbula",
+            "new_id": 2
+        },
+        {
+            "supercategory": "Aves",
+            "id": 403,
+            "name": "Poecile atricapillus",
+            "new_id": 3
+        }
+    ],
+    "model_type": "fasterrcnn_mobilenet_v3_large_fpn"
+}

train.py

@@ -4,49 +4,79 @@ from model import Model
 from data import iNaturalistDataset
 import torch
 import os
-import time
+import datetime as dt
+import json
+import utils
+
+if not os.path.exists("models/"):
+    os.mkdir("models")
+
+if torch.cuda.is_available():
+    device = torch.device("cuda")
+else:
+    device = torch.device("cpu")
+
+model_root = "models/" + dt.datetime.now().strftime("%Y%m%d_%H%M%S")
+model_path = model_root + ".pth"
+model_info = model_root + ".json"
+
+
+species_list = set(["Poecile atricapillus", "Archilochus colubris", "Icterus galbula"])
+model_type = "fasterrcnn_mobilenet_v3_large_fpn"
 
-if not os.path.exists('models/'):
-    os.mkdirs('models')
 
-device = torch.device('cuda') if torch.cuda.is_available() else torch.device('cpu')
 def run():
-    val_dataset = iNaturalistDataset(validation=True, transforms = get_transform(train=True))
+    val_dataset = iNaturalistDataset(
-    train_dataset = iNaturalistDataset(train=True, transforms = get_transform(train=False))
+        validation=True,
+        species=species_list,
+    )
+    train_dataset = iNaturalistDataset(
+        train=True,
+        species=species_list,
+    )
 
+    with open(model_info, "w") as js_p:
+        json.dump(
+            {"categories": train_dataset.categories, "model_type": model_type},
+            js_p,
+            default=str,
+            indent=4,
+        )
 
     train_data_loader = torch.utils.data.DataLoader(
-        train_dataset, batch_size=8, shuffle=True, num_workers=1,  collate_fn=utils.collate_fn
+        train_dataset,
-    )
+        batch_size=8,
-    val_data_loader = torch.utils.data.DataLoader(
+        shuffle=True,
-        val_dataset, batch_size=8, shuffle=True, num_workers=1,  collate_fn=utils.collate_fn
+        num_workers=4,
+        collate_fn=utils.collate_fn,
     )
 
-    num_classes = 5
+    val_data_loader = torch.utils.data.DataLoader(
-    model = Model(num_classes)
+        val_dataset,
+        batch_size=8,
+        shuffle=True,
+        num_workers=4,
+        collate_fn=utils.collate_fn,
+    )
+
+    num_classes = len(species_list) + 1
+    model = Model(num_classes, model_type)
     model.to(device)
 
     params = [p for p in model.parameters() if p.requires_grad]
-    optimizer = torch.optim.SGD(params, lr=0.005,
+    optimizer = torch.optim.SGD(params, lr=0.005, momentum=0.9, weight_decay=0.0005)
-                                momentum=0.9, weight_decay=0.0005)
 
-    lr_scheduler = torch.optim.lr_scheduler.StepLR(optimizer,
+    lr_scheduler = torch.optim.lr_scheduler.StepLR(optimizer, step_size=3, gamma=0.1)
-                                                   step_size=3,
-                                                   gamma=0.1)
 
     num_epochs = 10
     for epoch in range(num_epochs):
-        print(epoch)
+        train_one_epoch(
-        torch.save(model.state_dict(), 'model_weights_start_'+str(epoch)+ '.pth')
+            model, optimizer, train_data_loader, device, epoch, print_freq=10
-        # train for one epoch, printing every 10 iterations
+        )
-        engine.train_one_epoch(model, optimizer, train_data_loader, device, epoch, print_freq=10)
-        torch.save(model.state_dict(), 'model_weights_post_train_'+str(epoch)+ '.pth')
-        # update the learning rate
         lr_scheduler.step()
-        torch.save(model.state_dict(), 'model_weights_post_step_'+str(epoch)+ '.pth')
+        torch.save(model.state_dict(), model_path)
-        # evaluate on the test dataset
+        evaluate(model, val_data_loader, device=device)
-        engine.evaluate(model, val_data_loader, device=device)
 
-        
+
-if __name__ == "__main__":    
+if __name__ == "__main__":
-    run()
+    run()

transforms.py

@@ -28,8 +28,9 @@ class Compose(object):
 
 
 class RandomHorizontalFlip(T.RandomHorizontalFlip):
-    def forward(self, image: Tensor,
+    def forward(
-                target: Optional[Dict[str, Tensor]] = None) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
+        self, image: Tensor, target: Optional[Dict[str, Tensor]] = None
+    ) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
         if torch.rand(1) < self.p:
             image = F.hflip(image)
             if target is not None:
@@ -45,15 +46,23 @@ class RandomHorizontalFlip(T.RandomHorizontalFlip):
 
 
 class ToTensor(nn.Module):
-    def forward(self, image: Tensor,
+    def forward(
-                target: Optional[Dict[str, Tensor]] = None) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
+        self, image: Tensor, target: Optional[Dict[str, Tensor]] = None
+    ) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
         image = F.to_tensor(image)
         return image, target
 
 
 class RandomIoUCrop(nn.Module):
-    def __init__(self, min_scale: float = 0.3, max_scale: float = 1.0, min_aspect_ratio: float = 0.5,
+    def __init__(
-                 max_aspect_ratio: float = 2.0, sampler_options: Optional[List[float]] = None, trials: int = 40):
+        self,
+        min_scale: float = 0.3,
+        max_scale: float = 1.0,
+        min_aspect_ratio: float = 0.5,
+        max_aspect_ratio: float = 2.0,
+        sampler_options: Optional[List[float]] = None,
+        trials: int = 40,
+    ):
         super().__init__()
         # Configuration similar to https://github.com/weiliu89/caffe/blob/ssd/examples/ssd/ssd_coco.py#L89-L174
         self.min_scale = min_scale
@@ -65,14 +74,19 @@ class RandomIoUCrop(nn.Module):
         self.options = sampler_options
         self.trials = trials
 
-    def forward(self, image: Tensor,
+    def forward(
-                target: Optional[Dict[str, Tensor]] = None) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
+        self, image: Tensor, target: Optional[Dict[str, Tensor]] = None
+    ) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
         if target is None:
             raise ValueError("The targets can't be None for this transform.")
 
         if isinstance(image, torch.Tensor):
             if image.ndimension() not in {2, 3}:
-                raise ValueError('image should be 2/3 dimensional. Got {} dimensions.'.format(image.ndimension()))
+                raise ValueError(
+                    "image should be 2/3 dimensional. Got {} dimensions.".format(
+                        image.ndimension()
+                    )
+                )
             elif image.ndimension() == 2:
                 image = image.unsqueeze(0)
 
@@ -82,7 +96,9 @@ class RandomIoUCrop(nn.Module):
             # sample an option
             idx = int(torch.randint(low=0, high=len(self.options), size=(1,)))
             min_jaccard_overlap = self.options[idx]
-            if min_jaccard_overlap >= 1.0:  # a value larger than 1 encodes the leave as-is option
+            if (
+                min_jaccard_overlap >= 1.0
+            ):  # a value larger than 1 encodes the leave as-is option
                 return image, target
 
             for _ in range(self.trials):
@@ -106,14 +122,22 @@ class RandomIoUCrop(nn.Module):
                 # check for any valid boxes with centers within the crop area
                 cx = 0.5 * (target["boxes"][:, 0] + target["boxes"][:, 2])
                 cy = 0.5 * (target["boxes"][:, 1] + target["boxes"][:, 3])
-                is_within_crop_area = (left < cx) & (cx < right) & (top < cy) & (cy < bottom)
+                is_within_crop_area = (
+                    (left < cx) & (cx < right) & (top < cy) & (cy < bottom)
+                )
                 if not is_within_crop_area.any():
                     continue
 
                 # check at least 1 box with jaccard limitations
                 boxes = target["boxes"][is_within_crop_area]
-                ious = torchvision.ops.boxes.box_iou(boxes, torch.tensor([[left, top, right, bottom]],
+                ious = torchvision.ops.boxes.box_iou(
-                                                                         dtype=boxes.dtype, device=boxes.device))
+                    boxes,
+                    torch.tensor(
+                        [[left, top, right, bottom]],
+                        dtype=boxes.dtype,
+                        device=boxes.device,
+                    ),
+                )
                 if ious.max() < min_jaccard_overlap:
                     continue
 
@@ -130,14 +154,21 @@ class RandomIoUCrop(nn.Module):
 
 
 class RandomZoomOut(nn.Module):
-    def __init__(self, fill: Optional[List[float]] = None, side_range: Tuple[float, float] = (1., 4.), p: float = 0.5):
+    def __init__(
+        self,
+        fill: Optional[List[float]] = None,
+        side_range: Tuple[float, float] = (1.0, 4.0),
+        p: float = 0.5,
+    ):
         super().__init__()
         if fill is None:
-            fill = [0., 0., 0.]
+            fill = [0.0, 0.0, 0.0]
         self.fill = fill
         self.side_range = side_range
-        if side_range[0] < 1. or side_range[0] > side_range[1]:
+        if side_range[0] < 1.0 or side_range[0] > side_range[1]:
-            raise ValueError("Invalid canvas side range provided {}.".format(side_range))
+            raise ValueError(
+                "Invalid canvas side range provided {}.".format(side_range)
+            )
         self.p = p
 
     @torch.jit.unused
@@ -146,11 +177,16 @@ class RandomZoomOut(nn.Module):
         # We fake the type to make it work on JIT
         return tuple(int(x) for x in self.fill) if is_pil else 0
 
-    def forward(self, image: Tensor,
+    def forward(
-                target: Optional[Dict[str, Tensor]] = None) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
+        self, image: Tensor, target: Optional[Dict[str, Tensor]] = None
+    ) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
         if isinstance(image, torch.Tensor):
             if image.ndimension() not in {2, 3}:
-                raise ValueError('image should be 2/3 dimensional. Got {} dimensions.'.format(image.ndimension()))
+                raise ValueError(
+                    "image should be 2/3 dimensional. Got {} dimensions.".format(
+                        image.ndimension()
+                    )
+                )
             elif image.ndimension() == 2:
                 image = image.unsqueeze(0)
 
@@ -159,7 +195,9 @@ class RandomZoomOut(nn.Module):
 
         orig_w, orig_h = F._get_image_size(image)
 
-        r = self.side_range[0] + torch.rand(1) * (self.side_range[1] - self.side_range[0])
+        r = self.side_range[0] + torch.rand(1) * (
+            self.side_range[1] - self.side_range[0]
+        )
         canvas_width = int(orig_w * r)
         canvas_height = int(orig_h * r)
 
@@ -176,9 +214,12 @@ class RandomZoomOut(nn.Module):
 
         image = F.pad(image, [left, top, right, bottom], fill=fill)
         if isinstance(image, torch.Tensor):
-            v = torch.tensor(self.fill, device=image.device, dtype=image.dtype).view(-1, 1, 1)
+            v = torch.tensor(self.fill, device=image.device, dtype=image.dtype).view(
-            image[..., :top, :] = image[..., :, :left] = image[..., (top + orig_h):, :] = \
+                -1, 1, 1
-                image[..., :, (left + orig_w):] = v
+            )
+            image[..., :top, :] = image[..., :, :left] = image[
+                ..., (top + orig_h) :, :
+            ] = image[..., :, (left + orig_w) :] = v
 
         if target is not None:
             target["boxes"][:, 0::2] += left
@@ -188,8 +229,14 @@ class RandomZoomOut(nn.Module):
 
 
 class RandomPhotometricDistort(nn.Module):
-    def __init__(self, contrast: Tuple[float] = (0.5, 1.5), saturation: Tuple[float] = (0.5, 1.5),
+    def __init__(
-                 hue: Tuple[float] = (-0.05, 0.05), brightness: Tuple[float] = (0.875, 1.125), p: float = 0.5):
+        self,
+        contrast: Tuple[float] = (0.5, 1.5),
+        saturation: Tuple[float] = (0.5, 1.5),
+        hue: Tuple[float] = (-0.05, 0.05),
+        brightness: Tuple[float] = (0.875, 1.125),
+        p: float = 0.5,
+    ):
         super().__init__()
         self._brightness = T.ColorJitter(brightness=brightness)
         self._contrast = T.ColorJitter(contrast=contrast)
@@ -197,11 +244,16 @@ class RandomPhotometricDistort(nn.Module):
         self._saturation = T.ColorJitter(saturation=saturation)
         self.p = p
 
-    def forward(self, image: Tensor,
+    def forward(
-                target: Optional[Dict[str, Tensor]] = None) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
+        self, image: Tensor, target: Optional[Dict[str, Tensor]] = None
+    ) -> Tuple[Tensor, Optional[Dict[str, Tensor]]]:
         if isinstance(image, torch.Tensor):
             if image.ndimension() not in {2, 3}:
-                raise ValueError('image should be 2/3 dimensional. Got {} dimensions.'.format(image.ndimension()))
+                raise ValueError(
+                    "image should be 2/3 dimensional. Got {} dimensions.".format(
+                        image.ndimension()
+                    )
+                )
             elif image.ndimension() == 2:
                 image = image.unsqueeze(0)
 

utils.py

@@ -8,6 +8,8 @@ import torch
 import torch.distributed as dist
 
 
+
+
 class SmoothedValue(object):
     """Track a series of values and provide access to smoothed values over a
     window or the global series average.
@@ -32,7 +34,7 @@ class SmoothedValue(object):
         """
         if not is_dist_avail_and_initialized():
             return
-        t = torch.tensor([self.count, self.total], dtype=torch.float64, device='cuda')
+        t = torch.tensor([self.count, self.total], dtype=torch.float64, device="cuda")
         dist.barrier()
         dist.all_reduce(t)
         t = t.tolist()
@@ -67,7 +69,8 @@ class SmoothedValue(object):
             avg=self.avg,
             global_avg=self.global_avg,
             max=self.max,
-            value=self.value)
+            value=self.value,
+        )
 
 
 def all_gather(data):
@@ -130,15 +133,14 @@ class MetricLogger(object):
             return self.meters[attr]
         if attr in self.__dict__:
             return self.__dict__[attr]
-        raise AttributeError("'{}' object has no attribute '{}'".format(
+        raise AttributeError(
-            type(self).__name__, attr))
+            "'{}' object has no attribute '{}'".format(type(self).__name__, attr)
+        )
 
     def __str__(self):
         loss_str = []
         for name, meter in self.meters.items():
-            loss_str.append(
+            loss_str.append("{}: {}".format(name, str(meter)))
-                "{}: {}".format(name, str(meter))
-            )
         return self.delimiter.join(loss_str)
 
     def synchronize_between_processes(self):
@@ -151,31 +153,35 @@ class MetricLogger(object):
     def log_every(self, iterable, print_freq, header=None):
         i = 0
         if not header:
-            header = ''
+            header = ""
         start_time = time.time()
         end = time.time()
-        iter_time = SmoothedValue(fmt='{avg:.4f}')
+        iter_time = SmoothedValue(fmt="{avg:.4f}")
-        data_time = SmoothedValue(fmt='{avg:.4f}')
+        data_time = SmoothedValue(fmt="{avg:.4f}")
-        space_fmt = ':' + str(len(str(len(iterable)))) + 'd'
+        space_fmt = ":" + str(len(str(len(iterable)))) + "d"
         if torch.cuda.is_available():
-            log_msg = self.delimiter.join([
+            log_msg = self.delimiter.join(
-                header,
+                [
-                '[{0' + space_fmt + '}/{1}]',
+                    header,
-                'eta: {eta}',
+                    "[{0" + space_fmt + "}/{1}]",
-                '{meters}',
+                    "eta: {eta}",
-                'time: {time}',
+                    "{meters}",
-                'data: {data}',
+                    "time: {time}",
-                'max mem: {memory:.0f}'
+                    "data: {data}",
-            ])
+                    "max mem: {memory:.0f}",
+                ]
+            )
         else:
-            log_msg = self.delimiter.join([
+            log_msg = self.delimiter.join(
-                header,
+                [
-                '[{0' + space_fmt + '}/{1}]',
+                    header,
-                'eta: {eta}',
+                    "[{0" + space_fmt + "}/{1}]",
-                '{meters}',
+                    "eta: {eta}",
-                'time: {time}',
+                    "{meters}",
-                'data: {data}'
+                    "time: {time}",
-            ])
+                    "data: {data}",
+                ]
+            )
         MB = 1024.0 * 1024.0
         for obj in iterable:
             data_time.update(time.time() - end)
@@ -185,22 +191,37 @@ class MetricLogger(object):
                 eta_seconds = iter_time.global_avg * (len(iterable) - i)
                 eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
                 if torch.cuda.is_available():
-                    print(log_msg.format(
+                    print(
-                        i, len(iterable), eta=eta_string,
+                        log_msg.format(
-                        meters=str(self),
+                            i,
-                        time=str(iter_time), data=str(data_time),
+                            len(iterable),
-                        memory=torch.cuda.max_memory_allocated() / MB))
+                            eta=eta_string,
+                            meters=str(self),
+                            time=str(iter_time),
+                            data=str(data_time),
+                            memory=torch.cuda.max_memory_allocated() / MB,
+                        )
+                    )
                 else:
-                    print(log_msg.format(
+                    print(
-                        i, len(iterable), eta=eta_string,
+                        log_msg.format(
-                        meters=str(self),
+                            i,
-                        time=str(iter_time), data=str(data_time)))
+                            len(iterable),
+                            eta=eta_string,
+                            meters=str(self),
+                            time=str(iter_time),
+                            data=str(data_time),
+                        )
+                    )
             i += 1
             end = time.time()
         total_time = time.time() - start_time
         total_time_str = str(datetime.timedelta(seconds=int(total_time)))
-        print('{} Total time: {} ({:.4f} s / it)'.format(
+        print(
-            header, total_time_str, total_time / len(iterable)))
+            "{} Total time: {} ({:.4f} s / it)".format(
+                header, total_time_str, total_time / len(iterable)
+            )
+        )
 
 
 def collate_fn(batch):
@@ -208,7 +229,6 @@ def collate_fn(batch):
 
 
 def warmup_lr_scheduler(optimizer, warmup_iters, warmup_factor):
-
     def f(x):
         if x >= warmup_iters:
             return 1
@@ -231,10 +251,11 @@ def setup_for_distributed(is_master):
     This function disables printing when not in master process
     """
     import builtins as __builtin__
+
     builtin_print = __builtin__.print
 
     def print(*args, **kwargs):
-        force = kwargs.pop('force', False)
+        force = kwargs.pop("force", False)
         if is_master or force:
             builtin_print(*args, **kwargs)
 
@@ -271,25 +292,30 @@ def save_on_master(*args, **kwargs):
 
 
 def init_distributed_mode(args):
-    if 'RANK' in os.environ and 'WORLD_SIZE' in os.environ:
+    if "RANK" in os.environ and "WORLD_SIZE" in os.environ:
         args.rank = int(os.environ["RANK"])
-        args.world_size = int(os.environ['WORLD_SIZE'])
+        args.world_size = int(os.environ["WORLD_SIZE"])
-        args.gpu = int(os.environ['LOCAL_RANK'])
+        args.gpu = int(os.environ["LOCAL_RANK"])
-    elif 'SLURM_PROCID' in os.environ:
+    elif "SLURM_PROCID" in os.environ:
-        args.rank = int(os.environ['SLURM_PROCID'])
+        args.rank = int(os.environ["SLURM_PROCID"])
         args.gpu = args.rank % torch.cuda.device_count()
     else:
-        print('Not using distributed mode')
+        print("Not using distributed mode")
         args.distributed = False
         return
 
     args.distributed = True
 
     torch.cuda.set_device(args.gpu)
-    args.dist_backend = 'nccl'
+    args.dist_backend = "nccl"
-    print('| distributed init (rank {}): {}'.format(
+    print(
-        args.rank, args.dist_url), flush=True)
+        "| distributed init (rank {}): {}".format(args.rank, args.dist_url), flush=True
-    torch.distributed.init_process_group(backend=args.dist_backend, init_method=args.dist_url,
+    )
-                                         world_size=args.world_size, rank=args.rank)
+    torch.distributed.init_process_group(
+        backend=args.dist_backend,
+        init_method=args.dist_url,
+        world_size=args.world_size,
+        rank=args.rank,
+    )
     torch.distributed.barrier()
     setup_for_distributed(args.rank == 0)