def reset_units(seed=None, length=None, mass=None, time=None, energy=None, charge=None):
"""Allows the working units to be reset to random values or specified accoring to dimensions."""
if length is None and time is None and mass is None and energy is None and charge is None:
nu.reset_units(seed)
else:
try:
length = unit[length]
except:
pass
try:
mass = unit[mass]
except:
pass
try:
time = unit[time]
except:
pass
try:
energy = unit[energy]
except:
pass
try:
charge = unit[charge]
except:
pass
m = 1.
kg = 1.
s = 1.
C = 1.
K = 1.
if length is not None:
m = nu.m / length
if mass is not None:
kg = nu.kg / mass
if time is not None:
s = nu.s / time
if charge is not None:
C = nu.C / charge
if energy is not None:
J = nu.J / energy
if mass is None:
kg = J * s**2 / m**2
elif time is None:
s = (kg * m**2 / J)**0.5
elif length is None:
m = (J * s**2 / kg)
else:
raise ValueError('length, mass, time and energy cannot all be defined')
nu.m = m
nu.kg = kg
nu.s = s
nu.C = C
nu.K = K
nu.set_derived_units_and_constants()
build_unit()
def reset_units(seed=None, length=None, mass=None, time=None, energy=None, charge=None):
"""Allows the working units to be reset to random values or specified accoring to dimensions."""
if length is None and time is None and mass is None and energy is None and charge is None:
nu.reset_units(seed)
else:
try:
length = unit[length]
except:
pass
try:
mass = unit[mass]
except:
pass
try:
time = unit[time]
except:
pass
try:
energy = unit[energy]
except:
pass
try:
charge = unit[charge]
except:
pass
m = 1.
kg = 1.
s = 1.
C = 1.
K = 1.
if length is not None:
m = nu.m / length
if mass is not None:
kg = nu.kg / mass
if time is not None:
s = nu.s / time
if charge is not None:
C = nu.C / charge
if energy is not None:
J = nu.J / energy
if mass is None:
kg = J * s**2 / m**2
elif time is None:
s = (kg * m**2 / J)**0.5
elif length is None:
m = (J * s**2 / kg)
else:
raise ValueError('length, mass, time and energy cannot all be defined')
nu.m = m
nu.kg = kg
nu.s = s
nu.C = C
nu.K = K
nu.set_derived_units_and_constants()
build_unit()
def reset_units(seed=None, **kwargs):
"""
Extends numericalunits.reset_units() by allowing for working units to be
defined. If no working units are specified, then random working units are
used just like the default numericalunits behavior. Otherwise, use the
specified working units and SI.
Parameters
----------
seed : int, optional
random number seed to use in generating random working units.
seed='SI' will use SI units. Cannot be given with the other
parameters.
length : str, optional
Unit of length to use for the working units.
mass : str, optional
Unit of mass to use for the working units.
time : str, optional
Unit of time to use for the working units.
energy : str, optional
Unit of energy to use for the working units.
charge : str, optional
Unit of charge to use for the working units.
Raises
------
ValueError
If seed is given with any other parameters, or if more than four of
the working unit parameters are given.
"""
# Generate random base working units
if (len(kwargs) == 0):
nu.reset_units(seed)
build_unit()
# Generate SI + defined working units
elif seed is None:
# Check that no more than 4 working units are defined
if len(kwargs) > 4:
raise ValueError('Only four working units can be defined')
# Set base units to 1 (working units to SI)
nu.reset_units('SI')
build_unit()
# Scale base units by working units
if 'length' in kwargs:
nu.m = unit['m'] / unit[kwargs['length']]
if 'mass' in kwargs:
nu.kg = unit['kg'] / unit[kwargs['mass']]
if 'time' in kwargs:
nu.s = unit['s'] / unit[kwargs['time']]
if 'charge' in kwargs:
nu.C = unit['C'] / unit[kwargs['charge']]
# Scale derived units by working units
if 'energy' in kwargs:
J = unit['J'] / unit[kwargs['energy']]
# Scale base units by derived units
if 'mass' not in kwargs:
nu.kg = J * nu.s**2 / nu.m**2
elif 'time' not in kwargs:
nu.s = (nu.kg * nu.m**2 / J)**0.5
elif 'length' not in kwargs:
nu.m = (J * nu.s**2 / nu.kg)
# Rebuild derived units and unit dictionary
nu.set_derived_units_and_constants()
build_unit()
else:
raise ValueError('seed cannot be given with any other parameters')
def reset_units(seed=None, **kwargs):
"""
Extends numericalunits.reset_units() by allowing for working units to be
defined. If no working units are specified, then random working units are
used just like the default numericalunits behavior. Otherwise, use the
specified working units and SI.
Parameters
----------
seed : int, optional
random number seed to use in generating random working units.
seed='SI' will use SI units. Cannot be given with the other
parameters.
length : str, optional
Unit of length to use for the working units.
mass : str, optional
Unit of mass to use for the working units.
time : str, optional
Unit of time to use for the working units.
energy : str, optional
Unit of energy to use for the working units.
charge : str, optional
Unit of charge to use for the working units.
Raises
------
ValueError
If seed is given with any other parameters, or if more than four of
the working unit parameters are given.
"""
# Generate random base working units
if (len(kwargs) == 0):
nu.reset_units(seed)
build_unit()
# Generate SI + defined working units
elif seed is None:
# Check that no more than 4 working units are defined
if len(kwargs) > 4:
raise ValueError('Only four working units can be defined')
# Set base units to 1 (working units to SI)
nu.reset_units('SI')
build_unit()
# Scale base units by working units
if 'length' in kwargs:
nu.m = unit['m'] / unit[kwargs['length']]
if 'mass' in kwargs:
nu.kg = unit['kg'] / unit[kwargs['mass']]
if 'time' in kwargs:
nu.s = unit['s'] / unit[kwargs['time']]
if 'charge' in kwargs:
nu.C = unit['C'] / unit[kwargs['charge']]
# Scale derived units by working units
if 'energy' in kwargs:
J = unit['J'] / unit[kwargs['energy']]
# Scale base units by derived units
if 'mass' not in kwargs:
nu.kg = J * nu.s**2 / nu.m**2
elif 'time' not in kwargs:
nu.s = (nu.kg * nu.m**2 / J)**0.5
elif 'length' not in kwargs:
nu.m = (J * nu.s**2 / nu.kg)
# Rebuild derived units and unit dictionary
nu.set_derived_units_and_constants()
build_unit()
else:
raise ValueError('seed cannot be given with any other parameters')
import logging
import numericalunits as nu
import os
from datetime import *
import StringIO
import gzip
nu.reset_units()
nu.set_derived_units_and_constants()
from google.appengine.api import urlfetch
import json
class WeatherError(Exception):
def __init__(self, value, details):
self.value = value
self.details = details.rstrip()
def __str__(self):
return repr(self.value) + ' ' + repr(self.details)
class WeatherCalculator:
def __init__(self, session):
self.min_latitude = 90
self.min_longitude = 180
self.max_latitude = -90
self.max_longitude = -180
self.error = False
self.name = None