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def get_local_playlists(filepaths, exclude_patterns=None, max_depth=float('inf')): """Load playlists from local filepaths. Parameters: filepaths (list or str): Filepath(s) to search for music files. exclude_patterns (list or str): Pattern(s) to exclude. Patterns are Python regex patterns. Filepaths ...
def get_local_playlist_songs( playlist, include_filters=None, exclude_filters=None, all_includes=False, all_excludes=False, exclude_patterns=None): """Load songs from local playlist. Parameters: playlist (str): An M3U(8) playlist filepath. include_filters (list): A list of ``(field, pattern)`` tuples. ...
def _prepare_lines_(self, lines): """ Prepare the lines read from the text file before starting to process it. """ result = [] for line in lines: # Remove all whitespace from the start and end of the line. line = line.strip() # Replac...
def _create_element_list_(self): """ Extract an alphabetically sorted list of elements from the compounds of the material. :returns: An alphabetically sorted list of elements. """ element_set = stoich.elements(self.compounds) return sorted(list(element_set))
def add_assay(self, name, assay): """ Add an assay to the material. :param name: The name of the new assay. :param assay: A list containing the compound mass fractions for the assay. The sequence of the assay's elements must correspond to the sequence of the material...
def _is_compound_mass_tuple(self, value): """ Determines whether value is a tuple of the format (compound(str), mass(float)). """ if not type(value) is tuple: return False elif not len(value) == 2: return False elif not type(value[0]) is s...
def clone(self): """ Create a complete copy of self. :returns: A MaterialPackage that is identical to self. """ result = copy.copy(self) result.compound_masses = copy.deepcopy(self.compound_masses) return result
def get_assay(self): """ Determine the assay of self. :returns: [mass fractions] An array containing the assay of self. """ masses_sum = sum(self.compound_masses) return [m / masses_sum for m in self.compound_masses]
def get_element_masses(self): """ Get the masses of elements in the package. :returns: [kg] An array of element masses. The sequence of the elements in the result corresponds with the sequence of elements in the element list of the material. """ result = [0]...
def get_element_mass(self, element): """ Determine the masses of elements in the package. :returns: [kg] An array of element masses. The sequence of the elements in the result corresponds with the sequence of elements in the element list of the material. """ ...
def extract(self, other): """ Extract 'other' from self, modifying self and returning the extracted material as a new package. :param other: Can be one of the following: * float: A mass equal to other is extracted from self. Self is reduced by other and the extrac...
def add_to(self, other): """ Add another chem material package to this material package. :param other: The other material package. """ # Add another package. if type(other) is MaterialPackage: # Packages of the same material. if self.material ==...
def calculate(self, **state): """ Calculate the density at the specified temperature. :param T: [K] temperature :returns: [kg/m3] density The **state parameter contains the keyword argument(s) specified above\ that are used to describe the state of the material. ...
def calculate(self, **state): """ Calculate the density at the specified temperature, pressure, and composition. :param T: [K] temperature :param P: [Pa] pressure :param x: [mole fraction] dictionary of compounds and mole fractions :returns: [kg/m3] density ...
def set_parent_path(self, value): """ Set the parent path and the path from the new parent path. :param value: The path to the object's parent """ self._parent_path = value self.path = value + r'/' + self.name self._update_childrens_parent_path()
def create_account(self, name, number=None, description=None): """ Create a sub account in the account. :param name: The account name. :param description: The account description. :param number: The account number. :returns: The created account. """ new...
def remove_account(self, name): """ Remove an account from the account's sub accounts. :param name: The name of the account to remove. """ acc_to_remove = None for a in self.accounts: if a.name == name: acc_to_remove = a if acc_to_rem...
def get_child_account(self, account_name): """ Retrieves a child account. This could be a descendant nested at any level. :param account_name: The name of the account to retrieve. :returns: The child account, if found, else None. """ if r'/' in account_name: ...
def _create_account_(self, name, number, account_type): """ Create an account in the general ledger structure. :param name: The account name. :param number: The account number. :param account_type: The account type. :returns: The created account. """ ne...
def get_account_descendants(self, account): """ Retrieves an account's descendants from the general ledger structure given the account name. :param account_name: The account name. :returns: The decendants of the account. """ result = [] for child in acc...
def _get_account_and_descendants_(self, account, result): """ Returns the account and all of it's sub accounts. :param account: The account. :param result: The list to add all the accounts to. """ result.append(account) for child in account.accounts: ...
def validate_account_names(self, names): """ Validates whether the accounts in a list of account names exists. :param names: The names of the accounts. :returns: The descendants of the account. """ for name in names: if self.get_account(name) is None: ...
def report(self, format=ReportFormat.printout, output_path=None): """ Returns a report of this class. :param format: The format of the report. :param output_path: The path to the file the report is written to. If None, then the report is not written to a file. :return...
def create_transaction(self, name, description=None, tx_date=datetime.min.date(), dt_account=None, cr_account=None, source=None, amount=0.00): """ Create a transaction in the general ledger. :param name: The transa...
def transaction_list(self, start=datetime.min, end=datetime.max, format=ReportFormat.printout, component_path="", output_path=None): """ Generate a transaction list report. :param start: The star...
def balance_sheet(self, end=datetime.max, format=ReportFormat.printout, output_path=None): """ Generate a transaction list report. :param end: The end date to generate the report for. :param format: The format of the report. :param output_path: The path to ...
def income_statement(self, start=datetime.min, end=datetime.max, format=ReportFormat.printout, component_path="", output_path=None): """ Generate a transaction list report. :param start: The star...
def get_path_relative_to_module(module_file_path, relative_target_path): """ Calculate a path relative to the specified module file. :param module_file_path: The file path to the module. """ module_path = os.path.dirname(module_file_path) path = os.path.join(module_path, relative_target_path) ...
def get_date(date): """ Get the date from a value that could be a date object or a string. :param date: The date object or string. :returns: The date object. """ if type(date) is str: return datetime.strptime(date, '%Y-%m-%d').date() else: return date
def f_tr_Haaland(Re_D, ɛ, D, warn=True): """ Calculate the friction factor of turbulent flow (t) in a rough duct (r) for the provided conditions with Haaland's equation. :param Re_D: Reynolds number for the specified hydraulic diameter. :param ɛ: [m] Surface roughness. :param D: [m] Duct hydrau...
def Nu_x(self, L, theta, Ts, **statef): """ Calculate the local Nusselt number. :param L: [m] characteristic length of the heat transfer surface :param theta: [°] angle of the surface with the vertical :param Ts: [K] heat transfer surface temperature :param Tf: [K] bulk ...
def Nu_L(self, L, theta, Ts, **statef): """ Calculate the average Nusselt number. :param L: [m] characteristic length of the heat transfer surface :param theta: [°] angle of the surface with the vertical :param Ts: [K] heat transfer surface temperature :param **statef: [...
def h_x(self, L, theta, Ts, **statef): """ Calculate the local heat transfer coefficient. :param L: [m] characteristic length of the heat transfer surface :param theta: [°] angle of the surface with the vertical :param Ts: [K] heat transfer surface temperature :param Tf:...
def h_L(self, L, theta, Ts, **statef): """ Calculate the average heat transfer coefficient. :param L: [m] characteristic length of the heat transfer surface :param theta: [°] angle of the surface with the vertical :param Ts: [K] heat transfer surface temperature :param T...
def _prepare_lines(self, lines): """ Prepare the lines read from the text file before starting to process it. """ result = list() for line in lines: # Remove all whitespace characters (e.g. spaces, line breaks, etc.) # from the start and end of th...
def add_assay(self, name, solid_density, H2O_fraction, assay): """Add an assay to the material. :param name: The name of the new assay. :param assay: A numpy array containing the size class mass fractions for the assay. The sequence of the assay's elements must correspond to...
def create_package(self, assay=None, mass=0.0, normalise=True): """ Create a MaterialPackage based on the specified parameters. :param assay: The name of the assay based on which the package must be created. :param mass: [kg] The mass of the package. :param normalise: ...
def _is_size_class_mass_tuple(self, value): """ Determines whether value is a tuple of the format (size class(float), mass(float)). :param value: The value to check. :returns: Whether the value is a tuple in the required format. """ if not type(value) is tuple:...
def clone(self): """ Create a complete copy of self. :returns: A MaterialPackage that is identical to self. """ result = copy.copy(self) result.size_class_masses = copy.deepcopy(self.size_class_masses) return result
def clear(self): """ Set all the size class masses and H20_mass in the package to zero and the solid_density to 1.0 """ self.solid_density = 1.0 self.H2O_mass = 0.0 self.size_class_masses = self.size_class_masses * 0.0
def create_template(material, path, show=False): """ Create a template csv file for a data set. :param material: the name of the material :param path: the path of the directory where the file must be written :param show: a boolean indicating whether the created file should be \ ...
def calculate(self, **state): """ Base calculate method for models. Validates the material state parameter(s). :param **state: The material state """ if not self.state_validator.validate(state): msg = f"{self.material} {self.property} model. The state " ...
def delete(self, endpoint, data, url_data=None, parameters=None): """Returns the response and body for a delete request endpoints = 'users' # resource to access data = {'username': 'blah, 'password': blah} # DELETE body url_data = {}, () # Used to modularize endpoints, see...
def head(self, endpoint, url_data=None, parameters=None): """Returns the response and body for a head request endpoints = 'users' # resource to access url_data = {}, () # Used to modularize endpoints, see __init__ parameters = {}, ((),()) # URL paramters, ex: google.com?q=a...
def _url(self, endpoint, url_data=None, parameters=None): """Generate URL on the modularized endpoints and url parameters""" try: url = '%s/%s' % (self.base_url, self.endpoints[endpoint]) except KeyError: raise EndPointDoesNotExist(endpoint) if url_data: ...
def _httplib2_init(username, password): """Used to instantiate a regular HTTP request object""" obj = httplib2.Http() if username and password: obj.add_credentials(username, password) return obj
def calculate(self, **state): """ Calculate dynamic viscosity at the specified temperature and composition: :param T: [K] temperature :param x: [mole fraction] composition dictionary , e.g. \ {'SiO2': 0.25, 'CaO': 0.25, 'MgO': 0.25, 'FeO': 0.25} :returns: [Pa.s]...
def calculate(self, **state): """ Calculate dynamic viscosity at the specified temperature and composition: :param T: [K] temperature :param y: [mass fraction] composition dictionary , e.g. \ {'SiO2': 0.25, 'CaO': 0.25, 'MgO': 0.25, 'FeO': 0.25} :returns: [Pa.s]...
def calculate(self, **state): """ Calculate dynamic viscosity at the specified temperature and composition: :param T: [K] temperature :param x: [mole fraction] composition dictionary , e.g. \ {'SiO2': 0.25, 'CaO': 0.25, 'MgO': 0.25, 'FeO': 0.25} :returns: [Pa.s]...
def alpha(self, **state): """ Calculate the alpha value given the material state. :param **state: material state :returns: float """ return self.k(**state) / self.rho(**state) / self.Cp(**state)
def _calc_a(self, y_C, y_H, y_O, y_N, y_S): """ Calculate the mean atomic weight for the specified element mass fractions. :param y_C: Carbon mass fraction :param y_H: Hydrogen mass fraction :param y_O: Oxygen mass fraction :param y_N: Nitrogen mass fract...
def calculate(self, **state): """ Calculate the enthalpy at the specified temperature and composition using equation 9 in Merrick1983b. :param T: [K] temperature :param y_C: Carbon mass fraction :param y_H: Hydrogen mass fraction :param y_O: Oxygen mass fraction ...
def create_entity(self, name, gl_structure, description=None): """ Create an entity and add it to the model. :param name: The entity name. :param gl_structure: The entity's general ledger structure. :param description: The entity description. :returns: The created entit...
def remove_entity(self, name): """ Remove an entity from the model. :param name: The name of the entity to remove. """ entity_to_remove = None for e in self.entities: if e.name == name: entity_to_remove = e if entity_to_remove is not ...
def prepare_to_run(self): """ Prepare the model for execution. """ self.clock.reset() for e in self.entities: e.prepare_to_run(self.clock, self.period_count)
def run(self): """ Execute the model. """ self.prepare_to_run() for i in range(0, self.period_count): for e in self.entities: e.run(self.clock) self.clock.tick()
def _create_element_list(self): """ Extract an alphabetically sorted list of elements from the material's compounds. :returns: Alphabetically sorted list of elements. """ element_set = stoich.elements(self.compounds) return sorted(list(element_set))
def add_assay(self, name, assay): """ Add an assay to the material. :param name: Assay name. :param assay: Numpy array containing the compound mass fractions for the assay. The sequence of the assay's elements must correspond to the sequence of the material's compou...
def create_package(self, assay=None, mass=0.0, P=1.0, T=25.0, normalise=True): """ Create a MaterialPackage based on the specified parameters. :param assay: Name of the assay to be used to create the package. :param mass: Package mass. [kg] :param...
def create_stream(self, assay=None, mfr=0.0, P=1.0, T=25.0, normalise=True): """ Create a MaterialStream based on the specified parameters. :param assay: Name of the assay to be used to create the stream. :param mfr: Stream mass flow rate. [kg/h] :param P: ...
def _calculate_H(self, T): """ Calculate the enthalpy of the package at the specified temperature. :param T: Temperature. [°C] :returns: Enthalpy. [kWh] """ if self.isCoal: return self._calculate_Hfr_coal(T) H = 0.0 for compound in self.mat...
def _calculate_H_coal(self, T): """ Calculate the enthalpy of the package at the specified temperature, in case the material is coal. :param T: [°C] temperature :returns: [kWh] enthalpy """ m_C = 0 # kg m_H = 0 # kg m_O = 0 # kg m_N =...
def _calculate_T(self, H): """ Calculate the temperature of the package given the specified enthalpy using a secant algorithm. :param H: Enthalpy. [kWh] :returns: Temperature. [°C] """ # Create the initial guesses for temperature. x = list() x.a...
def _is_compound_mass_tuple(self, value): """ Determines whether value is a tuple of the format (compound(str), mass(float)). :param value: The value to be tested. :returns: True or False """ if not type(value) is tuple: return False elif no...
def H(self, H): """ Set the enthalpy of the package to the specified value, and recalculate it's temperature. :param H: The new enthalpy value. [kWh] """ self._H = H self._T = self._calculate_T(H)
def T(self, T): """ Set the temperature of the package to the specified value, and recalculate it's enthalpy. :param T: Temperature. [°C] """ self._T = T self._H = self._calculate_H(T)
def clone(self): """Create a complete copy of the package. :returns: A new MaterialPackage object.""" result = copy.copy(self) result._compound_masses = copy.deepcopy(self._compound_masses) return result
def clear(self): """ Set all the compound masses in the package to zero. Set the pressure to 1, the temperature to 25 and the enthalpy to zero. """ self._compound_masses = self._compound_masses * 0.0 self._P = 1.0 self._T = 25.0 self._H = 0.0
def get_compound_mass(self, compound): """ Determine the mass of the specified compound in the package. :param compound: Formula and phase of a compound, e.g. "Fe2O3[S1]". :returns: Mass. [kg] """ if compound in self.material.compounds: return self._compoun...
def get_compound_amounts(self): """ Determine the mole amounts of all the compounds. :returns: List of amounts. [kmol] """ result = self._compound_masses * 1.0 for compound in self.material.compounds: index = self.material.get_compound_index(compound) ...
def get_compound_amount(self, compound): """ Determine the mole amount of the specified compound. :returns: Amount. [kmol] """ index = self.material.get_compound_index(compound) return stoich.amount(compound, self._compound_masses[index])
def amount(self): """ Determine the sum of mole amounts of all the compounds. :returns: Amount. [kmol] """ return sum(self.get_compound_amount(c) for c in self.material.compounds)
def get_element_masses(self, elements=None): """ Determine the masses of elements in the package. :returns: Array of element masses. [kg] """ if elements is None: elements = self.material.elements result = numpy.zeros(len(elements)) for compound in ...
def get_element_mass_dictionary(self): """ Determine the masses of elements in the package and return as a dictionary. :returns: Dictionary of element symbols and masses. [kg] """ element_symbols = self.material.elements element_masses = self.get_element_masses(...
def get_element_mass(self, element): """ Determine the mass of the specified elements in the package. :returns: Masses. [kg] """ result = numpy.zeros(1) for compound in self.material.compounds: result += self.get_compound_mass(compound) *\ nu...
def extract(self, other): """ Extract 'other' from this package, modifying this package and returning the extracted material as a new package. :param other: Can be one of the following: * float: A mass equal to other is extracted from self. Self is reduced by othe...
def _calculate_Hfr(self, T): """ Calculate the enthalpy flow rate of the stream at the specified temperature. :param T: Temperature. [°C] :returns: Enthalpy flow rate. [kWh/h] """ if self.isCoal: return self._calculate_Hfr_coal(T) Hfr = 0.0...
def _calculate_DH298_coal(self): """ Calculate the enthalpy of formation of the dry-ash-free (daf) component of the coal. :returns: [kWh/kg daf] enthalpy of formation of daf coal """ m_C = 0 # kg m_H = 0 # kg m_O = 0 # kg m_N = 0 # kg m_S = 0...
def _calculate_Hfr_coal(self, T): """ Calculate the enthalpy flow rate of the stream at the specified temperature, in the case of it being coal. :param T: Temperature. [°C] :returns: Enthalpy flow rate. [kWh/h] """ m_C = 0 # kg/h m_H = 0 # kg/h ...
def _calculate_T(self, Hfr): """ Calculate the temperature of the stream given the specified enthalpy flow rate using a secant algorithm. :param H: Enthalpy flow rate. [kWh/h] :returns: Temperature. [°C] """ # Create the initial guesses for temperature. ...
def _is_compound_mfr_temperature_tuple(self, value): """Determines whether value is a tuple of the format (compound(str), mfr(float), temperature(float)). :param value: The value to be tested. :returns: True or False""" if not type(value) is tuple: return False ...
def Hfr(self, Hfr): """ Set the enthalpy flow rate of the stream to the specified value, and recalculate it's temperature. :param H: The new enthalpy flow rate value. [kWh/h] """ self._Hfr = Hfr self._T = self._calculate_T(Hfr)
def T(self, T): """ Set the temperature of the stream to the specified value, and recalculate it's enthalpy. :param T: Temperature. [°C] """ self._T = T self._Hfr = self._calculate_Hfr(T)
def HHV(self, HHV): """ Set the higher heating value of the stream to the specified value, and recalculate the formation enthalpy of the daf coal. :param HHV: MJ/kg coal, higher heating value """ self._HHV = HHV # MJ/kg coal if self.isCoal: self._DH...
def clone(self): """Create a complete copy of the stream. :returns: A new MaterialStream object.""" result = copy.copy(self) result._compound_mfrs = copy.deepcopy(self._compound_mfrs) return result
def clear(self): """ Set all the compound mass flow rates in the stream to zero. Set the pressure to 1, the temperature to 25 and the enthalpy to zero. """ self._compound_mfrs = self._compound_mfrs * 0.0 self._P = 1.0 self._T = 25.0 self._H = 0.0
def get_compound_mfr(self, compound): """ Determine the mass flow rate of the specified compound in the stream. :param compound: Formula and phase of a compound, e.g. "Fe2O3[S1]". :returns: Mass flow rate. [kg/h] """ if compound in self.material.compounds: ...
def get_compound_afrs(self): """ Determine the amount flow rates of all the compounds. :returns: List of amount flow rates. [kmol/h] """ result = self._compound_mfrs * 1.0 for compound in self.material.compounds: index = self.material.get_compound_index(comp...
def get_compound_afr(self, compound): """ Determine the amount flow rate of the specified compound. :returns: Amount flow rate. [kmol/h] """ index = self.material.get_compound_index(compound) return stoich.amount(compound, self._compound_mfrs[index])
def afr(self): """ Determine the sum of amount flow rates of all the compounds. :returns: Amount flow rate. [kmol/h] """ result = 0.0 for compound in self.material.compounds: result += self.get_compound_afr(compound) return result
def get_element_mfrs(self, elements=None): """ Determine the mass flow rates of elements in the stream. :returns: Array of element mass flow rates. [kg/h] """ if elements is None: elements = self.material.elements result = numpy.zeros(len(elements)) ...
def get_element_mfr_dictionary(self): """ Determine the mass flow rates of elements in the stream and return as a dictionary. :returns: Dictionary of element symbols and mass flow rates. [kg/h] """ element_symbols = self.material.elements element_mfrs = self.get...
def get_element_mfr(self, element): """ Determine the mass flow rate of the specified elements in the stream. :returns: Mass flow rates. [kg/h] """ result = 0.0 for compound in self.material.compounds: formula = compound.split('[')[0] result += s...
def extract(self, other): """ Extract 'other' from this stream, modifying this stream and returning the extracted material as a new stream. :param other: Can be one of the following: * float: A mass flow rate equal to other is extracted from self. Self is reduced ...
def Gr(L: float, Ts: float, Tf: float, beta: float, nu: float, g: float): """ Calculate the Grashof number. :param L: [m] heat transfer surface characteristic length. :param Ts: [K] heat transfer surface temperature. :param Tf: [K] bulk fluid temperature. :param beta: [1/K] fluid coefficient of...
def Re(L: float, v: float, nu: float) -> float: """ Calculate the Reynolds number. :param L: [m] surface characteristic length. :param v: [m/s] fluid velocity relative to the object. :param nu: [m2/s] fluid kinematic viscosity. :returns: float """ return v * L / nu
def Ra(L: float, Ts: float, Tf: float, alpha: float, beta: float, nu: float ) -> float: """ Calculate the Ralleigh number. :param L: [m] heat transfer surface characteristic length. :param Ts: [K] heat transfer surface temperature. :param Tf: [K] bulk fluid temperature. :param alpha: [m2...
def Nu(L: float, h: float, k: float) -> float: """ Calculate the Nusselt number. :param L: [m] heat transfer surface characteristic length. :param h: [W/K/m2] convective heat transfer coefficient. :param k: [W/K/m] fluid thermal conductivity. :returns: float """ return h * L / k
def Sh(L: float, h: float, D: float) -> float: """ Calculate the Sherwood number. :param L: [m] mass transfer surface characteristic length. :param h: [m/s] mass transfer coefficient. :param D: [m2/s] fluid mass diffusivity. :returns: float """ return h * L / D
def create(dataset, symbol, degree): """ Create a model object from the data set for the property specified by the supplied symbol, using the specified polynomial degree. :param dataset: a DataSet object :param symbol: the symbol of the property to be described, e.g. 'rho' ...