def setup_warnings(filters=[]):
""" Re-initialize warning filters without defaults.
This re-does the warnings initialization without using the python defaults.
In stead, we initialize the warnings filters with L{sys.warnoptions}, and
the L{filters} argument. The latter will typically come from a
configuration file.
:param list filters:
A list of filter strings, (as accepted by `python -W' or
`PYTHONWARNINGS', see L{warnings}).
The filters are added in reverse priority (the last one takes priority
of the first) - just like the `python -W' options or `PYTHONWARNINGS'.
:raise ValueError: If a filter string is invalid.
"""
global _cached_filters
filters = list(filters) # Make a copy
if _cached_filters is not None and _cached_filters == filters:
return # No change
warnings.resetwarnings()
# TODO: The default warnings module alters the warnings filter based on
# these flags. We should look into:
# - sys.flags.byteswarning (controls default BytesWarning filter)
# - sys.flags.py3k_warning (disables default ignore-filter)
# - sys.flags.division_warning (disables default ignore-filter)
for warnfilter in filters + sys.warnoptions:
try:
warnings._setoption(warnfilter)
except warnings._OptionError, e:
raise ValueError("Invalid warning filter: '%s'" % e)
def setup_warnings(filters=[]):
""" Re-initialize warning filters without defaults.
This re-does the warnings initialization without using the python defaults.
In stead, we initialize the warnings filters with L{sys.warnoptions}, and
the L{filters} argument. The latter will typically come from a
configuration file.
:param list filters:
A list of filter strings, (as accepted by `python -W' or
`PYTHONWARNINGS', see L{warnings}).
The filters are added in reverse priority (the last one takes priority
of the first) - just like the `python -W' options or `PYTHONWARNINGS'.
:raise ValueError: If a filter string is invalid.
"""
global _cached_filters
filters = list(filters) # Make a copy
if _cached_filters is not None and _cached_filters == filters:
return # No change
warnings.resetwarnings()
# TODO: The default warnings module alters the warnings filter based on
# these flags. We should look into:
# - sys.flags.byteswarning (controls default BytesWarning filter)
# - sys.flags.py3k_warning (disables default ignore-filter)
# - sys.flags.division_warning (disables default ignore-filter)
for warnfilter in filters + sys.warnoptions:
try:
warnings._setoption(warnfilter)
except warnings._OptionError, e:
raise ValueError("Invalid warning filter: '%s'" % e)
def test_options(self):
# Uses the private _setoption() function to test the parsing
# of command-line warning arguments
self.assertRaises(warnings._OptionError, warnings._setoption, "1:2:3:4:5:6")
self.assertRaises(warnings._OptionError, warnings._setoption, "bogus::Warning")
self.assertRaises(warnings._OptionError, warnings._setoption, "ignore:2::4:-5")
warnings._setoption("error::Warning::0")
self.assertRaises(UserWarning, warnings.warn, "convert to error")
def test_options(self):
# Uses the private _setoption() function to test the parsing
# of command-line warning arguments
self.assertRaises(warnings._OptionError, warnings._setoption,
'1:2:3:4:5:6')
self.assertRaises(warnings._OptionError, warnings._setoption,
'bogus::Warning')
self.assertRaises(warnings._OptionError, warnings._setoption,
'ignore:2::4:-5')
warnings._setoption('error::Warning::0')
self.assertRaises(UserWarning, warnings.warn, 'convert to error')
def catch_warnings_for_item(item):
"""
catches the warnings generated during setup/call/teardown execution
of the given item and after it is done posts them as warnings to this
item.
"""
args = item.config.getoption("pythonwarnings") or []
inifilters = item.config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
for arg in args:
warnings._setoption(arg)
for arg in inifilters:
_setoption(warnings, arg)
for mark in item.iter_markers(name="filterwarnings"):
for arg in mark.args:
warnings._setoption(arg)
yield
for warning in log:
warn_msg = warning.message
unicode_warning = False
if (
compat._PY2
and any(isinstance(m, compat.UNICODE_TYPES) for m in warn_msg.args)
):
new_args = []
for m in warn_msg.args:
new_args.append(
compat.ascii_escaped(m)
if isinstance(m, compat.UNICODE_TYPES)
else m
)
unicode_warning = list(warn_msg.args) != new_args
warn_msg.args = new_args
msg = warnings.formatwarning(
warn_msg,
warning.category,
warning.filename,
warning.lineno,
warning.line,
)
item.warn("unused", msg)
if unicode_warning:
warnings.warn(
"Warning is using unicode non convertible to ascii, "
"converting to a safe representation:\n %s" % msg,
UnicodeWarning,
)
def test_options(self):
# Uses the private _setoption() function to test the parsing
# of command-line warning arguments
self.assertRaises(warnings._OptionError,
warnings._setoption, '1:2:3:4:5:6')
self.assertRaises(warnings._OptionError,
warnings._setoption, 'bogus::Warning')
self.assertRaises(warnings._OptionError,
warnings._setoption, 'ignore:2::4:-5')
warnings._setoption('error::Warning::0')
self.assertRaises(UserWarning, warnings.warn, 'convert to error')
def __set_filters(self, filters):
with _filter_lock:
filters = list(filters or ()) # Make a copy
warnings.resetwarnings()
for wf in filters + sys.warnoptions:
try:
warnings._setoption(wf)
except warnings._OptionError as e:
raise ValueError(
"Invalid warning filter ({0}): {1}".format(wf, e))
return filters
def catch_warnings_for_item(item):
"""
catches the warnings generated during setup/call/teardown execution
of the given item and after it is done posts them as warnings to this
item.
"""
args = item.config.getoption("pythonwarnings") or []
inifilters = item.config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
for arg in args:
warnings._setoption(arg)
for arg in inifilters:
_setoption(warnings, arg)
for mark in item.iter_markers(name="filterwarnings"):
for arg in mark.args:
warnings._setoption(arg)
yield
for warning in log:
warn_msg = warning.message
unicode_warning = False
if compat._PY2 and any(
isinstance(m, compat.UNICODE_TYPES)
for m in warn_msg.args):
new_args = []
for m in warn_msg.args:
new_args.append(
compat.ascii_escaped(m) if isinstance(
m, compat.UNICODE_TYPES) else m)
unicode_warning = list(warn_msg.args) != new_args
warn_msg.args = new_args
msg = warnings.formatwarning(
warn_msg,
warning.category,
warning.filename,
warning.lineno,
warning.line,
)
item.warn("unused", msg)
if unicode_warning:
warnings.warn(
"Warning is using unicode non convertible to ascii, "
"converting to a safe representation:\n %s" % msg,
UnicodeWarning,
)
def catch_warnings_for_item(config, ihook, when, item):
"""
Context manager that catches warnings generated in the contained execution block.
``item`` can be None if we are not in the context of an item execution.
Each warning captured triggers the ``pytest_warning_captured`` hook.
"""
cmdline_filters = config.getoption("pythonwarnings") or []
inifilters = config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
if not sys.warnoptions:
# if user is not explicitly configuring warning filters, show deprecation warnings by default (#2908)
warnings.filterwarnings("always", category=DeprecationWarning)
warnings.filterwarnings("always", category=PendingDeprecationWarning)
warnings.filterwarnings("error", category=pytest.RemovedInPytest4Warning)
warnings.filterwarnings("error", category=pytest.PytestDeprecationWarning)
# filters should have this precedence: mark, cmdline options, ini
# filters should be applied in the inverse order of precedence
for arg in inifilters:
_setoption(warnings, arg)
for arg in cmdline_filters:
warnings._setoption(arg)
if item is not None:
for mark in item.iter_markers(name="filterwarnings"):
for arg in mark.args:
_setoption(warnings, arg)
yield
for warning_message in log:
ihook.pytest_warning_captured.call_historic(
kwargs=dict(warning_message=warning_message, when=when, item=item)
)
def catch_warnings_for_item(config, ihook, when, item):
"""
Context manager that catches warnings generated in the contained execution block.
``item`` can be None if we are not in the context of an item execution.
Each warning captured triggers the ``pytest_warning_captured`` hook.
"""
cmdline_filters = config.getoption("pythonwarnings") or []
inifilters = config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
if not sys.warnoptions:
# if user is not explicitly configuring warning filters, show deprecation warnings by default (#2908)
warnings.filterwarnings("always", category=DeprecationWarning)
warnings.filterwarnings("always", category=PendingDeprecationWarning)
warnings.filterwarnings("error", category=pytest.RemovedInPytest4Warning)
# filters should have this precedence: mark, cmdline options, ini
# filters should be applied in the inverse order of precedence
for arg in inifilters:
_setoption(warnings, arg)
for arg in cmdline_filters:
warnings._setoption(arg)
if item is not None:
for mark in item.iter_markers(name="filterwarnings"):
for arg in mark.args:
_setoption(warnings, arg)
yield
for warning_message in log:
ihook.pytest_warning_captured.call_historic(
kwargs=dict(warning_message=warning_message, when=when, item=item)
)
def catch_warnings_for_item(item):
"""
catches the warnings generated during setup/call/teardown execution
of the given item and after it is done posts them as warnings to this
item.
"""
args = item.config.getoption('pythonwarnings') or []
inifilters = item.config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
warnings.simplefilter('once')
for arg in args:
warnings._setoption(arg)
for arg in inifilters:
_setoption(warnings, arg)
yield
for warning in log:
msg = warnings.formatwarning(warning.message, warning.category,
warning.filename, warning.lineno,
warning.line)
item.warn("unused", msg)
def catch_warnings_for_item(item):
"""
catches the warnings generated during setup/call/teardown execution
of the given item and after it is done posts them as warnings to this
item.
"""
args = item.config.getoption('pythonwarnings') or []
inifilters = item.config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
for arg in args:
warnings._setoption(arg)
for arg in inifilters:
_setoption(warnings, arg)
yield
for warning in log:
warn_msg = warning.message
unicode_warning = False
if compat._PY2 and any(
isinstance(m, compat.UNICODE_TYPES)
for m in warn_msg.args):
warn_msg.args = [compat.safe_str(m) for m in warn_msg.args]
unicode_warning = True
msg = warnings.formatwarning(warn_msg, warning.category,
warning.filename, warning.lineno,
warning.line)
item.warn("unused", msg)
if unicode_warning:
warnings.warn(
"This warning %s is broken as it's message is not a str instance"
"(after all this is a stdlib problem workaround)" % msg,
UnicodeWarning)
def catch_warnings_for_item(config, ihook, when, item):
"""
Context manager that catches warnings generated in the contained execution block.
``item`` can be None if we are not in the context of an item execution.
Each warning captured triggers the ``pytest_warning_captured`` hook.
"""
args = config.getoption("pythonwarnings") or []
inifilters = config.getini("filterwarnings")
with warnings.catch_warnings(record=True) as log:
filters_configured = args or inifilters or sys.warnoptions
for arg in args:
warnings._setoption(arg)
for arg in inifilters:
_setoption(warnings, arg)
if item is not None:
for mark in item.iter_markers(name="filterwarnings"):
for arg in mark.args:
_setoption(warnings, arg)
filters_configured = True
if not filters_configured:
# if user is not explicitly configuring warning filters, show deprecation warnings by default (#2908)
warnings.filterwarnings("always", category=DeprecationWarning)
warnings.filterwarnings("always", category=PendingDeprecationWarning)
yield
for warning_message in log:
ihook.pytest_warning_captured.call_historic(
kwargs=dict(warning_message=warning_message, when=when, item=item)
)
"this is the main file, change input file appropriately and run this script"
import objectDetectUtils
# keras gives too many deprecation warnings, ignoring all warnings
import warnings
warnings._setoption('ignore')
# making instance of objectDetectUtils class
objectDetectInstance = objectDetectUtils.objectDetectutils()
# getting compiled model
model = objectDetectInstance.getModelDefination()
# providing image to model for to predict on
imagePath = "images/halftrack.jpg"
image = objectDetectInstance.preprocessImage(imagePath)
# collecting responses
response = model.predict_proba(image)
# top five class according to prediction probability
topFive = objectDetectInstance.getClassName(response[0])
# witting to image
objectDetectInstance.writeToImage(imagePath, topFive)
def update_event(self, inp=-1):
self.set_output_val(0, warnings._setoption(self.input(0)))