def download_pretrained_weights(weight_path):
# download if not exist
if not exists(weight_path):
print("File yolov3.weights not exist. Downloading now.")
weight_url = "https://pjreddie.com/media/files/yolov3.weights"
r = PoolManager().request('GET', weight_url)
with open(weight_path, 'wb') as f:
f.write(r.data)
r.release_conn()
print("File yolov3.weights downloaded.")
return weight_path
def load_class_names(class_name_path):
# download if not exist
if not exists(class_name_path):
print("File coco.names not exist. Downloading now.")
class_name_url = "https://raw.githubusercontent.com/ayooshkathuria/YOLO_v3_tutorial_from_scratch/master/data/coco.names"
r = PoolManager().request('GET', class_name_url)
with open(class_name_path, 'wb') as f:
f.write(r.data)
r.release_conn()
print("File coco.names downloaded.")
f = open(class_name_path, "r")
class_names = f.read().split("\n")[:-1]
return class_names
def parse_config(config_path):
"""
Check if configuration file exist, and download if not. Parse the configuration file and return a list.
:param config_path: path of configuration file
:return config: a list containing dicts, each dict is a config block
"""
# download if not exist
if not exists(config_path):
print("File yolov3.cfg not exist. Downloading now.")
config_url = "https://raw.githubusercontent.com/pjreddie/darknet/master/cfg/yolov3.cfg"
r = PoolManager().request('GET', config_url)
with open(config_path, 'wb') as f:
f.write(r.data)
r.release_conn()
print("File yolov3.cfg downloaded.")
# preprocess config file
config_file = open(config_path, 'r')
lines = config_file.read().split('\n')
filtered_lines = []
for line in lines:
# remove empty lines, space lines, and comment lines, and remove space in lines
if len(line) == 0 or line.isspace() is True or line[0] == '#':
continue
filtered_lines.append(line.replace(' ', ''))
# parse config
config = []
for line in filtered_lines:
if line[0] == '[': # new block starts
config.append({})
block = config[-1]
block['type'] = line[1:-1]
else:
key, value = line.split('=')
block[key] = value
# by default the height and width are supposed to be equal
if config[0]['width'] != config[0]['height']:
print(
"By default 'height' and 'width' in configuration should be same, "
"and image will be resize to height x height in this case.")
if int(config[0]['width']) != 416 or int(config[0]['height']) != 416:
print(
"To match with the paper both 'height' and 'width' are recommended to be 416. Current values are {}, {}."
.format(int(config[0]['width']), int(config[0]['height'])))
return config
def download(filename: str) -> None:
"""
Downloads a file from the git repo and saves it to the local directory.
:param filename: The filename to download from the repo.
:type filename: `str`
"""
url = 'https://raw.githubusercontent.com/threadreaper/autodomme/master/'
r = PoolManager().request('GET', url + filename, preload_content=False)
with open(filename, 'wb') as out:
while True:
data = r.read(512)
if not data:
break
out.write(data)
r.release_conn()
def generate(salt):
if not salt:
return None
render(config_file, 'salt-minion/minion.tmpl', salt,
user=salt['user'], group=salt['group'])
if not os.path.exists(master_keyfile):
if salt['master_key']:
req = PoolManager().request('GET', salt['master_key'], preload_content=False)
with open(master_keyfile, 'wb') as f:
while True:
data = req.read(1024)
if not data:
break
f.write(data)
req.release_conn()
chown(master_keyfile, salt['user'], salt['group'])
return None