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Add @try_except decorator #4224

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Jul 29, 2021
Merged

Add @try_except decorator #4224

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53 changes: 31 additions & 22 deletions utils/general.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,17 @@ def __exit__(self, exc_type, exc_val, exc_tb):
return True


def try_except(func):
# try-except function. Usage: @try_except decorator
def handler(*args, **kwargs):
try:
func(*args, **kwargs)
except Exception as e:
print(e)

return handler


def set_logging(rank=-1, verbose=True):
logging.basicConfig(
format="%(message)s",
Expand Down Expand Up @@ -114,26 +125,25 @@ def check_online():
return False


def check_git_status(err_msg=', for updates see https://github.com/ultralytics/yolov5'):
@try_except
def check_git_status():
# Recommend 'git pull' if code is out of date
msg = ', for updates see https://github.com/ultralytics/yolov5'
print(colorstr('github: '), end='')
try:
assert Path('.git').exists(), 'skipping check (not a git repository)'
assert not is_docker(), 'skipping check (Docker image)'
assert check_online(), 'skipping check (offline)'

cmd = 'git fetch && git config --get remote.origin.url'
url = check_output(cmd, shell=True, timeout=5).decode().strip().rstrip('.git') # git fetch
branch = check_output('git rev-parse --abbrev-ref HEAD', shell=True).decode().strip() # checked out
n = int(check_output(f'git rev-list {branch}..origin/master --count', shell=True)) # commits behind
if n > 0:
s = f"⚠️ WARNING: code is out of date by {n} commit{'s' * (n > 1)}. " \
f"Use 'git pull' to update or 'git clone {url}' to download latest."
else:
s = f'up to date with {url} ✅'
print(emojis(s)) # emoji-safe
except Exception as e:
print(f'{e}{err_msg}')
assert Path('.git').exists(), 'skipping check (not a git repository)' + msg
assert not is_docker(), 'skipping check (Docker image)' + msg
assert check_online(), 'skipping check (offline)' + msg

cmd = 'git fetch && git config --get remote.origin.url'
url = check_output(cmd, shell=True, timeout=5).decode().strip().rstrip('.git') # git fetch
branch = check_output('git rev-parse --abbrev-ref HEAD', shell=True).decode().strip() # checked out
n = int(check_output(f'git rev-list {branch}..origin/master --count', shell=True)) # commits behind
if n > 0:
s = f"⚠️ WARNING: code is out of date by {n} commit{'s' * (n > 1)}. " \
f"Use 'git pull' to update or 'git clone {url}' to download latest."
else:
s = f'up to date with {url} ✅'
print(emojis(s)) # emoji-safe


def check_python(minimum='3.6.2'):
Expand All @@ -148,15 +158,14 @@ def check_version(current='0.0.0', minimum='0.0.0', name='version ', pinned=Fals
assert result, f'{name}{minimum} required by YOLOv5, but {name}{current} is currently installed'


@try_except
def check_requirements(requirements='requirements.txt', exclude=()):
# Check installed dependencies meet requirements (pass *.txt file or list of packages)
prefix = colorstr('red', 'bold', 'requirements:')
check_python() # check python version
if isinstance(requirements, (str, Path)): # requirements.txt file
file = Path(requirements)
if not file.exists():
print(f"{prefix} {file.resolve()} not found, check failed.")
return
assert file.exists(), f"{prefix} {file.resolve()} not found, check failed."
requirements = [f'{x.name}{x.specifier}' for x in pkg.parse_requirements(file.open()) if x.name not in exclude]
else: # list or tuple of packages
requirements = [x for x in requirements if x not in exclude]
Expand All @@ -178,7 +187,7 @@ def check_requirements(requirements='requirements.txt', exclude=()):
source = file.resolve() if 'file' in locals() else requirements
s = f"{prefix} {n} package{'s' * (n > 1)} updated per {source}\n" \
f"{prefix} ⚠️ {colorstr('bold', 'Restart runtime or rerun command for updates to take effect')}\n"
print(emojis(s)) # emoji-safe
print(emojis(s))


def check_img_size(img_size, s=32, floor=0):
Expand Down