import os
import sys
import time
+import urllib3
+import importlib.util
from ftplib import FTP
-from optparse import OptionParser
+from argparse import ArgumentParser
+
+import pytz
import requests
import zeep.cache
import zeep.transports
-__version__ = '2.0.0'
+__version__ = '3.2.4'
LOG = logging.getLogger(__name__)
LOG.setLevel(logging.NOTSET)
+urllib3.disable_warnings()
+
def get_parser():
"""Return OptionParser for this program"""
- parser = OptionParser(version=__version__)
+ parser = ArgumentParser()
+
+ parser.add_argument("--version",
+ action="version",
+ version=__version__)
- parser.add_option("--config",
- dest="config",
- metavar="FILE",
- help="location of config file")
+ parser.add_argument("--config",
+ dest="config",
+ metavar="FILE",
+ help="location of config file")
- parser.add_option("--log-level",
- dest="log_level",
- default=None,
- help="set the log level (debug, info, warning)")
+ parser.add_argument("--log-level",
+ dest="log_level",
+ default=None,
+ help="set the log level (debug, info, warning)")
- parser.add_option("--dry-run",
- action="store_true",
- dest="dry_run",
- default=False,
- help="fetch data but don't upload to InfoEx")
+ parser.add_argument("--dry-run",
+ action="store_true",
+ dest="dry_run",
+ default=False,
+ help="fetch data but don't upload to InfoEx")
return parser
station = dict()
station['provider'] = config['station']['type']
- if station['provider'] not in ['nrcs', 'mesowest']:
+ if station['provider'] not in ['nrcs', 'mesowest', 'python']:
print("Please specify either nrcs or mesowest as the station type.")
sys.exit(1)
if station['provider'] == 'nrcs':
station['source'] = 'https://www.wcc.nrcs.usda.gov/awdbWebService/services?WSDL'
station['station_id'] = config['station']['station_id']
-
- try:
- station['desired_data'] = config['station']['desired_data'].split(',')
- except:
- # desired_data malformed or missing, setting default
- station['desired_data'] = [
- 'TOBS', # AIR TEMPERATURE OBSERVED (degF)
- 'SNWD', # SNOW DEPTH (in)
- 'PREC' # PRECIPITATION ACCUMULATION (in)
- ]
-
- # XXX: For NRCS, we're manually overriding units for now! Once
- # unit conversion is supported for NRCS, REMOVE THIS!
- if 'units' not in station:
- station['units'] = 'imperial'
+ station['desired_data'] = config['station']['desired_data'].split(',')
+ station['units'] = config['station']['units']
if station['provider'] == 'mesowest':
station['source'] = 'https://api.synopticdata.com/v2/stations/timeseries'
station['station_id'] = config['station']['station_id']
station['units'] = config['station']['units']
-
- try:
- station['desired_data'] = config['station']['desired_data']
- except:
- # desired_data malformed or missing, setting default
- station['desired_data'] = 'air_temp,snow_depth'
+ station['desired_data'] = config['station']['desired_data']
# construct full API URL (sans start/end time, added later)
- station['source'] = station['source'] + '?token=' + config['station']['token'] + '&within=60&units=' + station['units'] + '&stid=' + station['station_id'] + '&vars=' + station['desired_data']
+ station['source'] = station['source'] + '?token=' + \
+ config['station']['token'] + \
+ '&within=60&units=' + station['units'] + \
+ '&stid=' + station['station_id'] + \
+ '&vars=' + station['desired_data']
+
+ if station['provider'] == 'python':
+ station['path'] = config['station']['path']
+
+ tz = 'America/Los_Angeles'
- except KeyError as e:
- LOG.critical("%s not defined in %s" % (e, options.config))
- exit(1)
- except Exception as exc:
- LOG.critical("Exception occurred in config parsing: '%s'" % (exc))
- exit(1)
+ if 'tz' in config['station']:
+ tz = config['station']['tz']
+
+ try:
+ station['tz'] = pytz.timezone(tz)
+ except pytz.exceptions.UnknownTimeZoneError:
+ LOG.critical("%s is not a valid timezone", tz)
+ sys.exit(1)
+
+ # By default, fetch three hours of data
+ #
+ # If user wants hn24 or wind averaging, then
+ # we need more.
+ station['num_hrs_to_fetch'] = 3
+
+ # HN24
+ if 'hn24' in config['station']:
+ if config['station']['hn24'] not in ['true', 'false']:
+ raise ValueError("hn24 must be either 'true' or 'false'")
+
+ if config['station']['hn24'] == "true":
+ station['hn24'] = True
+ station['num_hrs_to_fetch'] = 24
+ else:
+ station['hn24'] = False
+ else:
+ # default to False
+ station['hn24'] = False
+
+ # Wind mode
+ if 'wind_mode' in config['station']:
+ if config['station']['wind_mode'] not in ['normal', 'average']:
+ raise ValueError("wind_mode must be either 'normal' or 'average'")
+
+ station['wind_mode'] = config['station']['wind_mode']
+
+ if station['wind_mode'] == "average":
+ station['num_hrs_to_fetch'] = 24
+ else:
+ # default to False
+ station['wind_mode'] = "normal"
+
+ except KeyError as err:
+ LOG.critical("%s not defined in configuration file", err)
+ sys.exit(1)
+ except ValueError as err:
+ LOG.critical("%s", err)
+ sys.exit(1)
# all sections/values present in config file, final sanity check
try:
for key in config.sections():
for subkey in config[key]:
- if not len(config[key][subkey]):
- raise ValueError;
- except ValueError as exc:
- LOG.critical("Config value '%s.%s' is empty" % (key, subkey))
- exit(1)
+ if not config[key][subkey]:
+ raise ValueError
+ except ValueError:
+ LOG.critical("Config value '%s.%s' is empty", key, subkey)
+ sys.exit(1)
return (infoex, station)
try:
from systemd.journal import JournalHandler
LOG.addHandler(JournalHandler())
- except:
+ except ImportError:
## fallback to syslog
#import logging.handlers
#LOG.addHandler(logging.handlers.SysLogHandler())
# fallback to stdout
handler = logging.StreamHandler(sys.stdout)
+ formatter = logging.Formatter('%(asctime)s.%(msecs)03d '
+ '%(levelname)s %(module)s - '
+ '%(funcName)s: %(message)s',
+ '%Y-%m-%d %H:%M:%S')
+ handler.setFormatter(formatter)
LOG.addHandler(handler)
# ugly, but passable
def main():
"""Main routine: sort through args, decide what to do, then do it"""
parser = get_parser()
- (options, args) = parser.parse_args()
+ options = parser.parse_args()
config = configparser.ConfigParser(allow_no_value=False)
iemap = setup_infoex_counterparts_mapping(station['provider'])
# override units if user selected metric
- #
- # NOTE: to update this, use the fmap<->final_data mapping laid out above
- #
- # NOTE: this only 'works' with MesoWest for now, as the MesoWest API
- # itself handles the unit conversion; in the future, we will also
- # support NRCS unit conversion, but this must be done by this
- # program.
- if station['units'] == 'metric':
- final_data[fmap['tempPresUnit']] = 'C'
- final_data[fmap['hsUnit']] = 'm'
- final_data[fmap['windSpeedUnit']] = 'm/s'
- final_data[fmap['windGustSpeedNumUnit']] = 'm/s'
+ if station['provider'] != 'python' and station['units'] == 'metric':
+ final_data = switch_units_to_metric(final_data, fmap)
- # floor time to nearest hour
- dt = datetime.datetime.now()
- end_date = dt - datetime.timedelta(minutes=dt.minute % 60,
- seconds=dt.second,
- microseconds=dt.microsecond)
- begin_date = end_date - datetime.timedelta(hours=3)
+ (begin_date, end_date) = setup_time_values(station)
- # get the data
- LOG.debug("Getting %s data from %s to %s" % (str(station['desired_data']),
- str(begin_date), str(end_date)))
+ if station['provider'] == 'python':
+ LOG.debug("Getting custom data from external Python program")
+ else:
+ LOG.debug("Getting %s data from %s to %s (%s)",
+ str(station['desired_data']),
+ str(begin_date), str(end_date), end_date.tzinfo.zone)
time_all_elements = time.time()
infoex['wx_data'] = get_nrcs_data(begin_date, end_date, station)
elif station['provider'] == 'mesowest':
infoex['wx_data'] = get_mesowest_data(begin_date, end_date,
- station)
+ station)
+ elif station['provider'] == 'python':
+ try:
+ spec = importlib.util.spec_from_file_location('custom_wx',
+ station['path'])
+ mod = importlib.util.module_from_spec(spec)
+ spec.loader.exec_module(mod)
+ mod.LOG = LOG
- LOG.info("Time taken to get all data : %.3f sec" % (time.time() -
- time_all_elements))
+ try:
+ infoex['wx_data'] = mod.get_custom_data()
+
+ if infoex['wx_data'] is None:
+ infoex['wx_data'] = []
+ except Exception as exc:
+ LOG.error("Python program for custom Wx data failed in "
+ "execution: %s", str(exc))
+ sys.exit(1)
+
+ LOG.info("Successfully executed external Python program")
+ except ImportError:
+ LOG.error("Please upgrade to Python 3.3 or later")
+ sys.exit(1)
+ except FileNotFoundError:
+ LOG.error("Specified Python program for custom Wx data "
+ "was not found")
+ sys.exit(1)
+ except Exception as exc:
+ LOG.error("A problem was encountered when attempting to "
+ "load your custom Wx program: %s", str(exc))
+ sys.exit(1)
+
+ LOG.info("Time taken to get all data : %.3f sec", time.time() -
+ time_all_elements)
LOG.debug("infoex[wx_data]: %s", str(infoex['wx_data']))
+ # timezone massaging
+ final_end_date = end_date.astimezone(station['tz'])
+
# Now we only need to add in what we want to change thanks to that
# abomination of a variable declaration earlier
final_data[fmap['Location UUID']] = infoex['location_uuid']
- final_data[fmap['obDate']] = end_date.strftime('%m/%d/%Y')
- final_data[fmap['obTime']] = end_date.strftime('%H:%M')
+ final_data[fmap['obDate']] = final_end_date.strftime('%m/%d/%Y')
+ final_data[fmap['obTime']] = final_end_date.strftime('%H:%M')
+ final_data[fmap['timeZone']] = station['tz'].zone
+
+ for element_cd in infoex['wx_data']:
+ if element_cd not in iemap:
+ LOG.warning("BAD KEY wx_data['%s']", element_cd)
+ continue
- for elementCd in infoex['wx_data']:
- if elementCd not in iemap:
- LOG.warning("BAD KEY wx_data['%s']" % (elementCd))
+ if infoex['wx_data'][element_cd] is None:
continue
+ # do the conversion before the rounding
+ if station['provider'] == 'nrcs' and station['units'] == 'metric':
+ infoex['wx_data'][element_cd] = convert_nrcs_units_to_metric(element_cd, infoex['wx_data'][element_cd])
+
+ # Massage precision of certain values to fit InfoEx's
+ # expectations
+ #
+ # 0 decimal places: relative humidity, wind speed, wind
+ # direction, wind gust, snow depth
+ # 1 decimal place: air temp, baro
+ # Avoid transforming None values
+ if element_cd in ['wind_speed', 'WSPD', 'wind_direction',
+ 'RHUM', 'relative_humidity', 'WDIR',
+ 'wind_gust', 'SNWD', 'snow_depth',
+ 'hn24']:
+ infoex['wx_data'][element_cd] = round(infoex['wx_data'][element_cd])
+ elif element_cd in ['TOBS', 'air_temp', 'PRES', 'pressure']:
+ infoex['wx_data'][element_cd] = round(infoex['wx_data'][element_cd], 1)
+ elif element_cd in ['PREC', 'precip_accum']:
+ infoex['wx_data'][element_cd] = round(infoex['wx_data'][element_cd], 2)
+
# CONSIDER: Casting every value to Float() -- need to investigate if
# any possible elementCds we may want are any other data
# type than float.
# storedUnitCd. But that's pretty network-intensive and
# may not even be worth it if there's only e.g. one or two
# exceptions to any otherwise uniformly Float value set.
- final_data[fmap[iemap[elementCd]]] = infoex['wx_data'][elementCd]
+ final_data[fmap[iemap[element_cd]]] = infoex['wx_data'][element_cd]
- LOG.debug("final_data: %s" % (str(final_data)))
+ LOG.debug("final_data: %s", str(final_data))
- if not write_local_csv(infoex['csv_filename'], final_data):
- LOG.warning('Could not write local CSV file: %s',
- infoex['csv_filename'])
- return 1;
+ if infoex['wx_data']:
+ if not write_local_csv(infoex['csv_filename'], final_data):
+ LOG.warning('Could not write local CSV file: %s',
+ infoex['csv_filename'])
+ return 1
- if not options.dry_run:
- upload_csv(infoex['csv_filename'], infoex)
+ if not options.dry_run:
+ upload_csv(infoex['csv_filename'], infoex)
LOG.debug('DONE')
return 0
Create a mapping of InfoEx fields to the local data's indexing scheme.
INFOEX FIELDS
-
+
This won't earn style points in Python, but here we establish a couple
of helpful mappings variables. The reason this is helpful is that the
end result is simply an ordered set, the CSV file. But we still may
want to manipulate the values arbitrarily before writing that file.
-
+
Also note that the current Auto Wx InfoEx documentation shows these
keys in a graphical table with the "index" beginning at 1, but here we
sanely index beginning at 0.
"""
+ # pylint: disable=too-many-statements,multiple-statements,bad-whitespace
fmap = {} ; final_data = [None] * 29
fmap['Location UUID'] = 0 ; final_data[0] = location_uuid
fmap['obDate'] = 1 ; final_data[1] = None
if provider == 'nrcs':
iemap['PREC'] = 'precipitationGauge'
iemap['TOBS'] = 'tempPres'
+ iemap['TMAX'] = 'tempMaxHour'
+ iemap['TMIN'] = 'tempMinHour'
iemap['SNWD'] = 'hS'
iemap['PRES'] = 'baro'
iemap['RHUM'] = 'rH'
elif provider == 'mesowest':
iemap['precip_accum'] = 'precipitationGauge'
iemap['air_temp'] = 'tempPres'
+ iemap['air_temp_high_24_hour'] = 'tempMaxHour'
+ iemap['air_temp_low_24_hour'] = 'tempMinHour'
iemap['snow_depth'] = 'hS'
iemap['pressure'] = 'baro'
iemap['relative_humidity'] = 'rH'
iemap['wind_direction'] = 'windDirectionNum'
iemap['wind_gust'] = 'windGustSpeedNum'
+ # NOTE: this doesn't exist in MesoWest, we create it in this
+ # program, so add it to the map here
+ iemap['hn24'] = 'hn24Auto'
+ elif provider == 'python':
+ # we expect Python programs to use the InfoEx data type names
+ iemap['precipitationGauge'] = 'precipitationGauge'
+ iemap['tempPres'] = 'tempPres'
+ iemap['tempMaxHour'] = 'tempMaxHour'
+ iemap['tempMinHour'] = 'tempMinHour'
+ iemap['hS'] = 'hS'
+ iemap['baro'] = 'baro'
+ iemap['rH'] = 'rH'
+ iemap['windSpeedNum'] = 'windSpeedNum'
+ iemap['windDirectionNum'] = 'windDirectionNum'
+ iemap['windGustSpeedNum'] = 'windGustSpeedNum'
+
return iemap
# provider-specific operations
def get_nrcs_data(begin, end, station):
"""get the data we're after from the NRCS WSDL"""
transport = zeep.transports.Transport(cache=zeep.cache.SqliteCache())
+ transport.session.verify = False
client = zeep.Client(wsdl=station['source'], transport=transport)
remote_data = {}
- for elementCd in station['desired_data']:
+ # massage begin/end date format
+ begin_date_str = begin.strftime('%Y-%m-%d %H:%M:00')
+ end_date_str = end.strftime('%Y-%m-%d %H:%M:00')
+
+ for element_cd in station['desired_data']:
time_element = time.time()
- # get the last three hours of data for this elementCd
+ # get the last three hours of data for this elementCd/element_cd
tmp = client.service.getHourlyData(
- stationTriplets=[station['station_id']],
- elementCd=elementCd,
- ordinal=1,
- beginDate=begin,
- endDate=end)
+ stationTriplets=[station['station_id']],
+ elementCd=element_cd,
+ ordinal=1,
+ beginDate=begin_date_str,
+ endDate=end_date_str)
- LOG.info("Time to get elementCd '%s': %.3f sec" % (elementCd,
- time.time() - time_element))
+ LOG.info("Time to get NRCS elementCd '%s': %.3f sec", element_cd,
+ time.time() - time_element)
values = tmp[0]['values']
# so perhaps this decision will be re-evaluated in the future
if values:
ordered = sorted(values, key=lambda t: t['dateTime'], reverse=True)
- remote_data[elementCd] = ordered[0]['value']
+ remote_data[element_cd] = ordered[0]['value']
else:
- remote_data[elementCd] = None
+ remote_data[element_cd] = None
return remote_data
# construct final, completed API URL
api_req_url = station['source'] + '&start=' + begin_date_str + '&end=' + end_date_str
- req = requests.get(api_req_url)
+
+ try:
+ req = requests.get(api_req_url)
+ except requests.exceptions.ConnectionError:
+ LOG.error("Could not connect to '%s'", api_req_url)
+ sys.exit(1)
try:
json = req.json()
try:
observations = json['STATION'][0]['OBSERVATIONS']
- except ValueError:
- LOG.error("Bad JSON in MesoWest response")
+ except KeyError as exc:
+ LOG.error("Unexpected JSON in MesoWest response: '%s'", exc)
+ sys.exit(1)
+ except IndexError as exc:
+ LOG.error("Unexpected JSON in MesoWest response: '%s'", exc)
+ try:
+ LOG.error("Detailed MesoWest response: '%s'",
+ json['SUMMARY']['RESPONSE_MESSAGE'])
+ except KeyError:
+ pass
+ sys.exit(1)
+ except ValueError as exc:
+ LOG.error("Bad JSON in MesoWest response: '%s'", exc)
sys.exit(1)
+ # pos represents the last item in the array, aka the most recent
pos = len(observations['date_time']) - 1
- for elementCd in station['desired_data'].split(','):
+ # while these values only apply in certain cases, init them here
+ wind_speed_values = []
+ wind_gust_speed_values = []
+ wind_direction_values = []
+ hn24_values = []
+
+ # results
+ wind_speed_avg = None
+ wind_gust_speed_avg = None
+ wind_direction_avg = None
+ hn24 = None
+
+ for element_cd in station['desired_data'].split(','):
# sort and isolate the most recent, see note above in NRCS for how and
# why this is done
#
# irregularities
# we may not have the data at all
- key_name = elementCd + '_set_1'
+ key_name = element_cd + '_set_1'
+
if key_name in observations:
- if observations[key_name][pos]:
- remote_data[elementCd] = observations[key_name][pos]
- else:
- remote_data[elementCd] = None
+ # val is what will make it into the dataset, after
+ # conversions... it gets defined here because in certain
+ # cases we need to look at all of the data to calculate HN24
+ # or wind averages, but for the rest of the data, we only
+ # take the most recent
+ val = None
+
+ # loop through all observations for this key_name
+ # record relevant values for wind averaging or hn24, but
+ # otherwise only persist the data if it's the last datum in
+ # the set
+ for idx, _ in enumerate(observations[key_name]):
+ val = observations[key_name][idx]
+
+ # skip bunk vals
+ if val is None:
+ continue
+
+ # mesowest by default provides wind_speed in m/s, but
+ # we specify 'english' units in the request; either way,
+ # we want mph
+ if element_cd in ('wind_speed', 'wind_gust'):
+ val = kn_to_mph(val)
+
+ # mesowest provides HS in mm, not cm; we want cm
+ if element_cd == 'snow_depth' and station['units'] == 'metric':
+ val = mm_to_cm(val)
+
+ # HN24 / wind_mode transformations, once the data has
+ # completed unit conversions
+ if station['wind_mode'] == "average":
+ if element_cd == 'wind_speed' and val is not None:
+ wind_speed_values.append(val)
+ elif element_cd == 'wind_gust' and val is not None:
+ wind_gust_speed_values.append(val)
+ elif element_cd == 'wind_direction' and val is not None:
+ wind_direction_values.append(val)
+
+ if element_cd == 'snow_depth':
+ hn24_values.append(val)
+
+ # again, only persist this datum to the final data if
+ # it's from the most recent date
+ if idx == pos:
+ remote_data[element_cd] = val
+
+ # ensure that the data is filled out
+ if not observations[key_name][pos]:
+ remote_data[element_cd] = None
else:
- remote_data[elementCd] = None
+ remote_data[element_cd] = None
+
+ if len(hn24_values) > 0:
+ hn24 = max(hn24_values) - min(hn24_values)
+
+ if len(wind_speed_values) > 0:
+ wind_speed_avg = sum(wind_speed_values) / len(wind_speed_values)
+
+ if len(wind_gust_speed_values) > 0:
+ wind_gust_speed_avg = sum(wind_gust_speed_values) / len(wind_gust_speed_values)
+
+ if len(wind_direction_values) > 0:
+ wind_direction_avg = sum(wind_direction_values) / len(wind_direction_values)
+
+ if hn24 is not None:
+ remote_data['hn24'] = hn24
+
+ # overwrite the following with the respective averages, if
+ # applicable
+ if wind_speed_avg is not None:
+ remote_data['wind_speed'] = wind_speed_avg
+
+ if wind_gust_speed_avg is not None:
+ remote_data['wind_gust'] = wind_gust_speed_avg
+
+ if wind_direction_avg is not None:
+ remote_data['wind_direction'] = wind_direction_avg
return remote_data
+def switch_units_to_metric(data_map, mapping):
+ """replace units with metric counterparts"""
+
+ # NOTE: to update this, use the fmap<->final_data mapping laid out
+ # in setup_infoex_fields_mapping ()
+ data_map[mapping['tempMaxHourUnit']] = 'C'
+ data_map[mapping['tempMinHourUnit']] = 'C'
+ data_map[mapping['tempPresUnit']] = 'C'
+ data_map[mapping['precipitationGaugeUnit']] = 'mm'
+ data_map[mapping['hsUnit']] = 'cm'
+ data_map[mapping['windSpeedUnit']] = 'm/s'
+ data_map[mapping['windGustSpeedNumUnit']] = 'm/s'
+ data_map[mapping['dewPointUnit']] = 'C'
+ data_map[mapping['hn24AutoUnit']] = 'cm'
+ data_map[mapping['hstAutoUnit']] = 'cm'
+
+ return data_map
+
+def convert_nrcs_units_to_metric(element_cd, value):
+ """convert NRCS values from English to metric"""
+ if element_cd == 'TOBS':
+ value = f_to_c(value)
+ elif element_cd == 'SNWD':
+ value = in_to_cm(value)
+ elif element_cd == 'PREC':
+ value = in_to_mm(value)
+ return value
+
# CSV operations
def write_local_csv(path_to_file, data):
"""Write the specified CSV file to disk"""
- with open(path_to_file, 'w') as f:
+ with open(path_to_file, 'w') as file_object:
# The requirement is that empty values are represented in the CSV
# file as "", csv.QUOTE_NONNUMERIC achieves that
- LOG.debug("writing CSV file '%s'" % (path_to_file))
- writer = csv.writer(f, quoting=csv.QUOTE_NONNUMERIC)
+ LOG.debug("writing CSV file '%s'", path_to_file)
+ writer = csv.writer(file_object, quoting=csv.QUOTE_NONNUMERIC)
writer.writerow(data)
- f.close()
+ file_object.close()
return True
def upload_csv(path_to_file, infoex_data):
"""Upload the specified CSV file to InfoEx FTP and remove the file"""
with open(path_to_file, 'rb') as file_object:
- LOG.debug("uploading FTP file '%s'" % (infoex_data['host']))
+ LOG.debug("uploading FTP file '%s'", infoex_data['host'])
ftp = FTP(infoex_data['host'], infoex_data['uuid'],
infoex_data['api_key'])
ftp.storlines('STOR ' + path_to_file, file_object)
file_object.close()
os.remove(path_to_file)
+# other miscellaneous routines
+def setup_time_values(station):
+ """establish time bounds of data request(s)"""
+
+ # default timezone to UTC (for MesoWest)
+ tz = pytz.utc
+
+ # but for NRCS, use the config-specified timezone
+ if station['provider'] == 'nrcs':
+ tz = station['tz']
+
+ # floor time to nearest hour
+ date_time = datetime.datetime.now(tz=tz)
+ end_date = date_time - datetime.timedelta(minutes=date_time.minute % 60,
+ seconds=date_time.second,
+ microseconds=date_time.microsecond)
+ begin_date = end_date - datetime.timedelta(hours=station['num_hrs_to_fetch'])
+ return (begin_date, end_date)
+
+def f_to_c(f):
+ """convert Fahrenheit to Celsius"""
+ return (float(f) - 32) * 5.0/9.0
+
+def in_to_cm(inches):
+ """convert inches to centimetrs"""
+ return float(inches) * 2.54
+
+def in_to_mm(inches):
+ """convert inches to millimeters"""
+ return (float(inches) * 2.54) * 10.0
+
+def ms_to_mph(ms):
+ """convert meters per second to miles per hour"""
+ return ms * 2.236936
+
+def kn_to_mph(kn):
+ """convert knots to miles per hour"""
+ return kn * 1.150779
+
+def mm_to_cm(mm):
+ """convert millimeters to centimetrs"""
+ return mm / 10.0
+
if __name__ == "__main__":
sys.exit(main())
wylark / infoex-autowx.git / blobdiff