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How to use get_item method in localstack

Best Python code snippet using localstack_python

metadata.py

Source:metadata.py

...41            self.exif = exift.get_metadata(filename)42    def get_all(self):43        ''' Get all extracted metadata items '''44        return self.exif45    def get_item(self, item, index=None):46        ''' Get metadata item by Namespace:Parameter'''47        val = None48        try:49            val = self.exif[item]50            if index is not None:51                try:52                    if isinstance(val, unicode):53                        val = val.encode('ascii','ignore')54                except NameError:55                    #throws on python 3 where unicode is undefined56                    pass57                if isinstance(val,str) and len(val.split(',')) > 1:58                    val = val.split(',')59                val = val[index]60        except KeyError:61            #print ("Item "+item+" not found")62            pass63        except IndexError:64            print("Item {0} is length {1}, index {2} is outside this range.".format(65                item,66                len(self.exif[item]),67                index))68        return val69    def size(self, item):70        '''get the size (length) of a metadata item'''71        val = self.get_item(item)72        try:73            if isinstance(val, unicode):74                val = val.encode('ascii','ignore')75        except NameError:76            #throws on python 3 where unicode is undefined77            pass78        if isinstance(val,str) and len(val.split(',')) > 1:79            val = val.split(',')80        if val is not None:81            return len(val)82        else:83            return 084    def print_all(self):85        for item in self.get_all():86            print("{}: {}".format(item, self.get_item(item)))87    def dls_present(self):88        return self.get_item("XMP:Irradiance") is not None89    def supports_radiometric_calibration(self):90        if(self.get_item('XMP:RadiometricCalibration')) is None:91            return False92        return True93    def position(self):94        '''get the WGS-84 latitude, longitude tuple as signed decimal degrees'''95        lat = self.get_item('EXIF:GPSLatitude')96        latref = self.get_item('EXIF:GPSLatitudeRef')97        if latref=='S':98            lat *= -1.099        lon = self.get_item('EXIF:GPSLongitude')100        lonref = self.get_item('EXIF:GPSLongitudeRef')101        if lonref=='W':102            lon *= -1.0103        alt = self.get_item('EXIF:GPSAltitude')104        return lat, lon, alt105    def utc_time(self):106        ''' Get the timezone-aware datetime of the image capture '''107        str_time = self.get_item('EXIF:DateTimeOriginal')108        utc_time = datetime.strptime(str_time, "%Y:%m:%d %H:%M:%S")109        subsec = int(self.get_item('EXIF:SubSecTime'))110        negative = 1.0111        if subsec < 0:112            negative = -1.0113            subsec *= -1.0114        subsec = float('0.{}'.format(int(subsec)))115        subsec *= negative116        ms = subsec * 1e3117        utc_time += timedelta(milliseconds = ms)118        timezone = pytz.timezone('UTC')119        utc_time = timezone.localize(utc_time)120        return utc_time121    def dls_pose(self):122        ''' get DLS pose as local earth-fixed yaw, pitch, roll in radians '''123        if self.get_item('XMP:Yaw') is not None:124            yaw = float(self.get_item('XMP:Yaw')) # should be XMP.DLS.Yaw, but exiftool doesn't expose it that way125            pitch = float(self.get_item('XMP:Pitch'))126            roll = float(self.get_item('XMP:Roll'))127        else:128            yaw = pitch = roll = 0.0129        return yaw, pitch, roll130    def dls_irradiance(self):131        if self.get_item('XMP:SpectralIrradiance') is not None:132            irr = float(self.get_item('XMP:SpectralIrradiance'))133        else:134            irr = 0.0135        return irr136    def rig_relatives(self):137        if self.get_item('XMP:RigRelatives') is not None:138            nelem = self.size('XMP:RigRelatives')139            return [float(self.get_item('XMP:RigRelatives', i)) for i in range(nelem)]140        else:141            return None142    def capture_id(self):143        return self.get_item('XMP:CaptureId')144    def flight_id(self):145        return self.get_item('XMP:FlightId')146    def camera_make(self):147        return self.get_item('EXIF:Make')148    def camera_model(self):149        return self.get_item('EXIF:Model')150    def firmware_version(self):151        return self.get_item('EXIF:Software')152    def band_name(self):153        return self.get_item('XMP:BandName')154    def band_index(self):155        return self.get_item('XMP:RigCameraIndex')156    def exposure(self):157        exp = self.get_item('EXIF:ExposureTime')158        if math.fabs(exp-(1.0/6329.0)) < 0.0001:159            exp = 0.000274160        return exp161    def gain(self):162        return self.get_item('EXIF:ISOSpeed')/100.0163    def image_size(self):164        return self.get_item('EXIF:ImageWidth'), self.get_item('EXIF:ImageHeight')165    def center_wavelength(self):166        return self.get_item('XMP:CentralWavelength')167    def bandwidth(self):168        return self.get_item('XMP:WavelengthFWHM')169    def radiometric_cal(self):170        nelem = self.size('XMP:RadiometricCalibration')171        return [float(self.get_item('XMP:RadiometricCalibration', i)) for i in range(nelem)]172    def black_level(self):173        if self.get_item('EXIF:BlackLevel') is None:174            return 0175        black_lvl = self.get_item('EXIF:BlackLevel').split(' ')176        total = 0.0177        num = len(black_lvl)178        for pixel in black_lvl:179            total += float(pixel)180        return total/float(num)181    def dark_pixels(self):182        ''' get the average of the optically covered pixel values183        Note: these pixels are raw, and have not been radiometrically184              corrected. Use the black_level() method for all185              radiomentric calibrations '''186        dark_pixels = self.get_item('XMP:DarkRowValue')187        total = 0.0188        num = len(dark_pixels)189        for pixel in dark_pixels:190            total += float(pixel)191        return total/float(num)192    def bits_per_pixel(self):193        ''' get the number of bits per pixel, which defines the maximum digital number value in the image '''194        return self.get_item('EXIF:BitsPerSample')195    def vignette_center(self):196        ''' get the vignette center in X and Y image coordinates'''197        nelem = self.size('XMP:VignettingCenter')198        return [float(self.get_item('XMP:VignettingCenter', i)) for i in range(nelem)]199    def vignette_polynomial(self):200        ''' get the radial vignette polynomial in the order it's defined in the metadata'''201        nelem = self.size('XMP:VignettingPolynomial')202        return [float(self.get_item('XMP:VignettingPolynomial', i)) for i in range(nelem)]203    def distortion_parameters(self):204        nelem = self.size('XMP:PerspectiveDistortion')205        return [float(self.get_item('XMP:PerspectiveDistortion', i)) for i in range(nelem)]206    def principal_point(self):207        return [float(item) for item in self.get_item('XMP:PrincipalPoint').split(',')]208    def focal_plane_resolution_px_per_mm(self):209        fp_x_resolution = float(self.get_item('EXIF:FocalPlaneXResolution'))210        fp_y_resolution = float(self.get_item('EXIF:FocalPlaneYResolution'))211        return fp_x_resolution, fp_y_resolution212    def focal_length_mm(self):213        units = self.get_item('XMP:PerspectiveFocalLengthUnits')214        focal_length_mm = 0.0215        if units == 'mm':216            focal_length_mm = float(self.get_item('XMP:PerspectiveFocalLength'))217        else:218            focal_length_px = float(self.get_item('XMP:PerspectiveFocalLength'))219            focal_length_mm = focal_length_px / self.focal_plane_resolution_px_per_mm()[0]220        return focal_length_mm221    def __float_or_zero(self, str):222        if str is not None:223            return float(str)224        else:225            return 0.0226    def spectral_irradiance(self):227        return self.__float_or_zero(self.get_item('XMP:SpectralIrradiance'))228    def horizontal_irradiance(self):229        return self.__float_or_zero(self.get_item('XMP:HorizontalIrradiance'))/100.0230    def scattered_irradiance(self):231        return self.__float_or_zero(self.get_item('XMP:ScatteredIrradiance'))232    def direct_irradiance(self):233        return self.__float_or_zero(self.get_item('XMP:DirectIrradiance'))234    def solar_azimuth(self):235        return self.__float_or_zero(self.get_item('XMP:SolarAzimuth'))236    def solar_elevation(self):237        return self.__float_or_zero(self.get_item('XMP:SolarElevation'))238    def estimated_direct_vector(self):239        if self.get_item('XMP:EstimatedDirectLightVector') is not None:240            return [self.__float_or_zero(item) for item in self.get_item('XMP:EstimatedDirectLightVector')]241        else:242            return None243    def auto_calibration_image(self):244        cal_tag = self.get_item('XMP:CalibrationPicture')245        return cal_tag is not None and \246               cal_tag == 2 and \247               self.panel_albedo() is not None and \248               self.panel_region() is not None and \249               self.panel_serial() is not None250    def panel_albedo(self):251        albedo = self.get_item('XMP:Albedo')252        if albedo is not None:253            return self.__float_or_zero(albedo)254        return albedo255    def panel_region(self):256        if self.get_item('XMP:ReflectArea') is not None:257            coords = [int(item) for item in self.get_item('XMP:ReflectArea').split(',')]258            return list(zip(coords[0::2], coords[1::2]))259        else:260            return None261    def panel_serial(self):...

binary_tree.py

Source:binary_tree.py

...14        node = Node(item)15        # If this is first item in the tree , set it as root16        if self.root is None:17            self.root = node18            print('Root is empty. Setting root to : %s' % node.get_item())19            self.size += 120        else:  # Otherwise, we need to insert the item into the tree using the binary tree insert algorithm21            print('Root %s is not empty. Need to add %s as a child' % (self.root.get_item(), node.get_item()))22            self.insert(self.root, node)2324    def insert(self, parent, child):2526        # If child is less than parent, it goes here27        if child.get_item() < parent.get_item():28            print('Child %s is less than parent %s' % (child.get_item(), parent.get_item()))29            if parent.get_left() is None:  # If left node is None (null) we have found our spot!30                print('Left node is %s. So we found our spot. Adding child %s here.' % (parent.get_left(), child.get_item()))31                parent.set_left(child)32                child.set_parent(parent)33                print("%s is the new left of parent %s " % (parent.get_left().get_item(), parent.get_item()))34                print("%s is the new parent of child %s " % (child.get_parent().get_item(), child.get_item()))35                self.size += 136            # Otherwise we need to call insert again and test for left or right (recursion)37            else:38                print('Left node is %s. So we haven not found our spot yet. Calling recursion to add child %s in the level below here.' % (parent.get_left().get_item(), child.get_item()))39                self.insert(parent.get_left(), child)4041        # If child is greater than parent, it goes to the right42        elif child.get_item() > parent.get_item():43            print('Child %s is greater than parent %s' % (child.get_item(), parent.get_item()))44            # If right node is null, we have found our spot!45            if parent.get_right() is None:46                print('Right node is %s. So we found our spot. Adding child %s here.' % (parent.get_right(), child.get_item()))47                parent.set_right(child)48                child.set_parent(parent)49                self.size += 150            else:51                # Otherwise we need to call insert again and test for left and right using recursion52                print('Right node is %s. So we haven not found our spot yet. Calling recursion to add child %s in the level below here.' % (parent.get_right().get_item(), child.get_item()))53                self.insert(parent.get_right(), child)54        # If the parent and child happen to be equal, we don't do anything assuming that the data in the binary tree is unique5556    def does_tree_contains(self, item):57        current_node = self.get_node(item)58        if current_node is None:59            return False60        else:61            return True6263    def get_node(self, item):64        current_node = self.root65        while current_node is not None:66            if item == current_node.get_item():67                return current_node68            elif item < current_node.get_item():69                current_node = current_node.get_left()70            else:71                current_node = current_node.get_right()7273        return None7475    def delete_item(self, item):76        deleted = False7778        # Make sure the root isn't null meaning the tree is empty79        if self.root is None:80            return False8182        if self.get_node(item) is None:83            return False8485        # Find the node to delete86        node_to_be_deleted = self.get_node(item)87        print("Deleting node %s" % node_to_be_deleted.get_item())8889        if node_to_be_deleted is not None:90            # If the node to delete doesn't have any children, just delete it91            if node_to_be_deleted.get_left() is None and node_to_be_deleted.get_right() is None:92                self.unlink_item(node_to_be_deleted, None)93                deleted = True94            # If the node to delete only has a right child, remove it in the h  hierarchy95            elif node_to_be_deleted.get_left() is None and node_to_be_deleted.get_right() is not None:96                self.unlink_item(node_to_be_deleted, node_to_be_deleted.get_right())97                deleted = True98            # If the node to delete only has a left child, remove it in the h  hierarchy99            elif node_to_be_deleted.get_left() is not None and node_to_be_deleted.get_right() is None:100                self.unlink_item(node_to_be_deleted, node_to_be_deleted.get_left())101                deleted = True102            # The node has both children, do a node swap to delete103            else:104                print("Node to be deleted is %s and current root is %s" % (node_to_be_deleted.get_item(), self.root.get_item()))105                print("Left child of %s is %s and Right child of %s is %s" % (node_to_be_deleted.get_item(), node_to_be_deleted.get_left().get_item(), node_to_be_deleted.get_item(), node_to_be_deleted.get_right().get_item()))106                print("Right child of %s is %s and its right child is %s" % (107                node_to_be_deleted.get_item(), node_to_be_deleted.get_right().get_item(), node_to_be_deleted.get_right().get_right().get_item()))108109                child = node_to_be_deleted.get_left()110                print("Candidate child node is %s" % child.get_item())111                print("child.get_right() is %s" % child.get_right().get_item())112                print("child.get_left() is %s" % child.get_left().get_item())113                while child.get_right() is not None and child.get_left() is not None:114                    child = child.get_right()115                print("We found the most leaf node %s. We can replace the node to be deleted %s with this node" % (child.get_item(), node_to_be_deleted.get_item()))116                # We have the right most leaf node. We can replace the current node with this node117                child.get_parent().set_right(None)  # Remove the leaf node from it's current position118119                child.set_left(node_to_be_deleted.get_left())120                print("Right node of Node t be deleted at this stage is %s" % node_to_be_deleted.get_right().get_item())121                child.set_right(node_to_be_deleted.get_right().get_right())122123                self.unlink_item(node_to_be_deleted, child)124                deleted = True125            if deleted:126                self.size -= 1127128        return deleted129130    def unlink_item(self, node_to_be_deleted, new_node):131        print("node_to_be_deleted is %s" % node_to_be_deleted.get_item())132        print("Unlinking Node: %s" % node_to_be_deleted.get_item())133        if new_node is not None:134            print("New Node is %s" % new_node.get_item())135136        if node_to_be_deleted.get_item() == self.root.get_item():137            print("Current Node is Root: %s" % node_to_be_deleted.get_item())138            new_node.set_left(node_to_be_deleted.get_left())139            new_node.set_right(node_to_be_deleted.get_right())140            self.root = new_node141            print("New root is %s. New root left node is %s. New root right node is %s" % (self.root.get_item(), self.root.get_left().get_item(), self.root.get_right().get_item()))142        elif node_to_be_deleted.get_parent().get_right().get_item() == node_to_be_deleted.get_item():143            node_to_be_deleted.get_parent().set_right(new_node)144        else:145            node_to_be_deleted.get_parent().set_left(new_node)146147    def display_tree_data(self):148149        print("Tree Root is: %s" % self.root.get_item())150        child_node = self.root.get_left()151152        print("................... Left side Nodes from tree Root ...................")153        while child_node:154            print("Left child_node is %s" % child_node.get_item())155            if child_node.get_right() is not None:156                print("Right child_node is %s" % child_node.get_right().get_item())157            child_node = child_node.get_left()158159        print("................... Right side Nodes from tree Root ...................")160        child_node = self.root.get_right()161        while child_node:162            print("Right child_node is %s" % child_node.get_item())163            if child_node.get_left() is not None:164                print("Left child_node is %s" % child_node.get_left().get_item())
...

certutils.py

Source:certutils.py

...30    def cert_date_to_gmt_date(self, d):31        return datetime.datetime.strptime(d.decode('ascii'), '%Y%m%d%H%M%SZ')32    def cert_date_to_gmt_date_string(self, d):33        return self.cert_date_to_gmt_date(d).strftime("%Y-%m-%d %H:%M:%S GMT")34    def get_item(self, item, extension=None, return_as=None, algo=None):35        try:36            if item == 'subject':37                return self.decode_x509name_obj(self.cert.get_subject())3839            elif item == 'subject_o':40                return self.cert.get_subject().O.strip()4142            elif item == 'subject_cn':43                return self.cert.get_subject().CN.strip()4445            elif item == 'extensions':46                ext_count = self.cert.get_extension_count()47                if extension is None:48                    ext_infos = []49                    for i in range (0, ext_count):50                        ext = self.cert.get_extension(i)51                        ext_infos.append(ext.get_short_name().decode('utf-8'))52                    return ext_infos5354                for i in range (0, ext_count):55                    ext = self.cert.get_extension(i)56                    if extension in str(ext.get_short_name()):57                        return ext.__str__().strip()58                return None5960            elif item == 'version':61                return self.cert.get_version()6263            elif item == 'pubkey_type':64                pk_type = self.cert.get_pubkey().type()65                if pk_type == crypto.TYPE_RSA:66                    return 'RSA'67                elif pk_type == crypto.TYPE_DSA:68                    return 'DSA'69                return 'Unknown'7071            elif item == 'pubkey_pem':72                return crypto.dump_publickey(crypto.FILETYPE_PEM, self.cert.get_pubkey()).decode('utf-8')7374            elif item == 'serial_number':75                return self.cert.get_serial_number()7677            elif item == 'not_before':78                not_before = self.cert.get_notBefore()79                if return_as == 'string':80                    return self.cert_date_to_gmt_date_string(not_before)81                return self.cert_date_to_gmt_date(not_before)8283            elif item == 'not_after':84                not_after = self.cert.get_notAfter()85                if return_as == 'string':86                    return self.cert_date_to_gmt_date_string(not_after)87                return self.cert_date_to_gmt_date(not_after)8889            elif item == 'has_expired':90                return self.cert.has_expired()9192            elif item == 'issuer':93                return self.decode_x509name_obj(self.cert.get_issuer())9495            elif item == 'issuer_o':96                return self.cert.get_issuer().O.strip()9798            elif item == 'issuer_cn':99                return self.cert.get_issuer().CN.strip()100101            elif item == 'signature_algorithm':102                return self.cert.get_signature_algorithm().decode('utf-8')103104            elif item == 'digest':105                # ['md5', 'sha1', 'sha256', 'sha512']106                return self.cert.digest(algo)107108            elif item == 'pem':109                return crypto.dump_certificate(crypto.FILETYPE_PEM, self.cert).decode('utf-8')110111            else:112                return None113114        except Exception as e:115            # logger.error('item = {}, exception, e = {}'.format(item, e))116            return None117    @property118    def subject(self):119        return self.get_item('subject')120    @property121    def subject_o(self):122        return self.get_item('subject_o')123    @property124    def subject_cn(self):125        return self.get_item('subject_cn')126    @property127    def subject_name_hash(self):128        return self.get_item('subject_name_hash')129    @property130    def extension_count(self):131        return self.get_item('extension_count')132    @property133    def extensions(self):134        return self.get_item('extensions')135    @property136    def extension_basic_constraints(self):137        return self.get_item('extensions', extension='basicConstraints')138    @property139    def extension_subject_key_identifier(self):140        return self.get_item('extensions', extension='subjectKeyIdentifier')141    @property142    def extension_authority_key_identifier(self):143        return self.get_item('extensions', extension='authorityKeyIdentifier')144    @property145    def extension_subject_alt_name(self):146        return self.get_item('extensions', extension='subjectAltName')147    @property148    def version(self):149        return self.get_item('version')150    @property151    def pubkey_type(self):152        return self.get_item('pubkey_type')153    @property154    def pubkey_pem(self):155        return self.get_item('pubkey_pem')156    @property157    def serial_number(self):158        return self.get_item('serial_number')159    @property160    def not_before(self):161        return self.get_item('not_before')162    @property163    def not_before_s(self):164        return self.get_item('not_before', return_as='string')165    @property166    def not_after(self):167        return self.get_item('not_after')168    @property169    def not_after_s(self):170        return self.get_item('not_after', return_as='string')171    @property172    def has_expired(self):173        return self.get_item('has_expired')174    @property175    def issuer(self):176        return self.get_item('issuer')177    @property178    def issuer_o(self):179        return self.get_item('issuer_o')180    @property181    def issuer_cn(self):182        return self.get_item('issuer_cn')183    @property184    def signature_algorithm(self):185        return self.get_item('signature_algorithm')186    @property187    def digest_sha256(self):188        return self.get_item('digest', algo='sha256')189    @property190    def pem(self):191        return self.get_item('pem')192193194def verify_certificate_chain(cert_pem, trusted_certs):195    certificate = crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)196    # parse ceritificate information197    clientcert = CertInfo(certificate)198    # get subject common name199    subject = clientcert.subject_cn200    issuer = clientcert.issuer_cn201    # Check if subject is admin user202    if subject != "admin":203        raise Exception("Not trusted user")204    # validate issuer 205    if issuer != "ca":
...

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