Imported from archive.
[weather.git] / weather.py
index a93f1ed..4920a3a 100644 (file)
-# weather.py version 1.1, http://fungi.yuggoth.org/weather/
-# Copyright (c) 2006 Jeremy Stanley <fungi@yuggoth.org>, all rights reserved.
-# Licensed per terms in the LICENSE file distributed with this software.
+# Copyright (c) 2006-2010 Jeremy Stanley <fungi@yuggoth.org>. Permission to
+# use, copy, modify, and distribute this software is granted under terms
+# provided in the LICENSE file distributed with this software.
 
 """Contains various object definitions needed by the weather utility."""
 
-version = "1.1"
+version = "1.5"
 
 class Selections:
-       """An object to contain selection data."""
-       def __init__(self):
-               """Store the config, options and arguments."""
-               self.config = get_config()
-               self.options, self.arguments = get_options(self.config)
-               if self.arguments:
-                       self.arguments = [(x.lower()) for x in self.arguments]
-               else: self.arguments = [ None ]
-       def get(self, option, argument=None):
-               """Retrieve data from the config or options."""
-               if not argument: return self.options.__dict__[option]
-               elif not self.config.has_section(argument):
-                       import sys
-                       sys.stderr.write("ERROR: no alias defined for " \
-                               + argument + "\n")
-                       sys.exit(1)
-               elif self.config.has_option(argument, option):
-                       return self.config.get(argument, option)
-               else: return self.options.__dict__[option]
-       def get_bool(self, option, argument=None):
-               """Get data and coerce to a boolean if necessary."""
-               return bool(self.get(option, argument))
+   """An object to contain selection data."""
+   def __init__(self):
+      """Store the config, options and arguments."""
+      self.config = get_config()
+      self.options, self.arguments = get_options(self.config)
+      if self.arguments:
+         self.arguments = [(x.lower()) for x in self.arguments]
+      else: self.arguments = [ None ]
+   def get(self, option, argument=None):
+      """Retrieve data from the config or options."""
+      if not argument: return self.options.__dict__[option]
+      elif not self.config.has_section(argument):
+         import sys
+         sys.stderr.write("weather: error: no alias defined for " \
+            + argument + "\n")
+         sys.exit(1)
+      elif self.config.has_option(argument, option):
+         return self.config.get(argument, option)
+      else: return self.options.__dict__[option]
+   def get_bool(self, option, argument=None):
+      """Get data and coerce to a boolean if necessary."""
+      return bool(self.get(option, argument))
 
 def bool(data):
-       """Coerce data to a boolean value."""
-       if type(data) is str:
-               if eval(data): return True
-               else: return False
-       else:
-               if data: return True
-               else: return False
+   """Coerce data to a boolean value."""
+   if type(data) is str:
+      if eval(data): return True
+      else: return False
+   else:
+      if data: return True
+      else: return False
 
 def quote(words):
-       """Wrap a string in quotes if it contains spaces."""
-       if words.find(" ") != -1: words = "\"" + words + "\""
-       return words
+   """Wrap a string in quotes if it contains spaces."""
+   if words.find(" ") != -1: words = "\"" + words + "\""
+   return words
+
+def titlecap(words):
+   """Perform English-language title capitalization."""
+   words = words.lower().strip()
+   for separator in [" ", "-", "'"]:
+      newwords = []
+      wordlist = words.split(separator)
+      for word in wordlist:
+         if word:
+            newwords.append(word[0].upper() + word[1:])
+      words = separator.join(newwords)
+   end = len(words)
+   for prefix in ["Mac", "Mc"]:
+      position = 0
+      offset = len(prefix)
+      while position < end:
+         position = words.find(prefix, position)
+         if position == -1:
+            position = end
+         position += offset
+         import string
+         if position < end and words[position] in string.letters:
+            words = words[:position] \
+               + words[position].upper() \
+               + words[position+1:]
+   return words
+
+def filter_units(line, units="imperial"):
+   """Filter or convert units in a line of text between US/UK and metric."""
+   import re
+   # filter lines with both pressures in the form of "X inches (Y hPa)" or
+   # "X in. Hg (Y hPa)"
+   dual_p = re.match(
+      "(.* )(\d*(\.\d+)? (inches|in\. Hg)) \((\d*(\.\d+)? hPa)\)(.*)",
+      line
+   )
+   if dual_p:
+      preamble, in_hg, i_fr, i_un, hpa, h_fr, trailer = dual_p.groups()
+      if units == "imperial": line = preamble + in_hg + trailer
+      elif units == "metric": line = preamble + hpa + trailer
+   # filter lines with both temperatures in the form of "X F (Y C)"
+   dual_t = re.match(
+      "(.* )(\d*(\.\d+)? F) \((\d*(\.\d+)? C)\)(.*)",
+      line
+   )
+   if dual_t:
+      preamble, fahrenheit, f_fr, celsius, c_fr, trailer = dual_t.groups()
+      if units == "imperial": line = preamble + fahrenheit + trailer
+      elif units == "metric": line = preamble + celsius + trailer
+   # if metric is desired, convert distances in the form of "X mile(s)" to
+   # "Y kilometer(s)"
+   if units == "metric":
+      imperial_d = re.match(
+         "(.* )(\d+)( mile\(s\))(.*)",
+         line
+      )
+      if imperial_d:
+         preamble, mi, m_u, trailer = imperial_d.groups()
+         line = preamble + str(int(round(int(mi)*1.609344))) \
+            + " kilometer(s)" + trailer
+   # filter speeds in the form of "X MPH (Y KT)" to just "X MPH"; if metric is
+   # desired, convert to "Z KPH"
+   imperial_s = re.match(
+      "(.* )(\d+)( MPH)( \(\d+ KT\))(.*)",
+      line
+   )
+   if imperial_s:
+      preamble, mph, m_u, kt, trailer = imperial_s.groups()
+      if units == "imperial": line = preamble + mph + m_u + trailer
+      elif units == "metric": 
+         line = preamble + str(int(round(int(mph)*1.609344))) + " KPH" + \
+            trailer
+   # if imperial is desired, qualify given forcast temperatures like "X F"; if
+   # metric is desired, convert to "Y C"
+   imperial_t = re.match(
+      "(.* )(High |high |Low |low )(\d+)(\.|,)(.*)",
+      line
+   )
+   if imperial_t:
+      preamble, parameter, fahrenheit, sep, trailer = imperial_t.groups()
+      if units == "imperial":
+         line = preamble + parameter + fahrenheit + " F" + sep + trailer
+      elif units == "metric":
+         line = preamble + parameter \
+            + str(int(round((int(fahrenheit)-32)*5/9))) + " C" + sep + trailer
+   # hand off the resulting line
+   return line
 
 def sorted(data):
-       """Return a sorted copy of a list."""
-       new_copy = data[:]
-       new_copy.sort()
-       return new_copy
-
-def get_url(url):
-       """Return a string containing the results of a URL GET."""
-       import urllib
-       return urllib.urlopen(url).read()
-
-def get_metar(id, verbose=False):
-       """Return a summarized METAR for the specified station."""
-       metar = get_url(
-               "http://weather.noaa.gov/pub/data/observations/metar/decoded/" \
-                       + id.upper() + ".TXT")
-       if verbose: return metar
-       else:
-               lines = metar.split("\n")
-               headings = [
-                       "Relative Humidity",
-                       "Precipitation last hour",
-                       "Sky conditions",
-                       "Temperature",
-                       "Weather",
-                       "Wind" 
-                       ]
-               output = []
-               output.append("Current conditions at " \
-                       + lines[0].split(", ")[1] + " (" \
-                       + id.upper() +")")
-               output.append("Last updated " + lines[1])
-               for line in lines:
-                       for heading in headings:
-                               if line.startswith(heading + ":"):
-                                       if line.endswith(":0"):
-                                               line = line[:-2]
-                                       output.append("   " + line)
-               return "\n".join(output)
-
-def get_forecast(city, st, verbose=False):
-       """Return the forecast for a specified city/st combination."""
-       forecast = get_url("http://weather.noaa.gov/pub/data/forecasts/city/" \
-               + st.lower() + "/" + city.lower().replace(" ", "_") \
-               + ".txt")
-       if verbose: return forecast
-       else:
-               lines = forecast.split("\n")
-               output = []
-               output.append(lines[2])
-               output.append(lines[3])
-               for line in lines:
-                       if line.startswith("."):
-                               output.append(line.replace(".", "   ", 1))
-               return "\n".join(output)
+   """Return a sorted copy of a list."""
+   new_copy = data[:]
+   new_copy.sort()
+   return new_copy
+
+def get_url(url, ignore_fail=False):
+   """Return a string containing the results of a URL GET."""
+   import urllib2
+   try: return urllib2.urlopen(url).read()
+   except urllib2.URLError:
+      if ignore_fail: return ""
+      else:
+         import sys, traceback
+         sys.stderr.write("weather: error: failed to retrieve\n   " \
+            + url + "\n   " + \
+            traceback.format_exception_only(sys.exc_type, sys.exc_value)[0])
+         sys.exit(1)
+
+def get_metar(
+   id,
+   verbose=False,
+   quiet=False,
+   headers=None,
+   murl=None,
+   imperial=False,
+   metric=False
+):
+   """Return a summarized METAR for the specified station."""
+   if not id:
+      import sys
+      sys.stderr.write("weather: error: id required for conditions\n")
+      sys.exit(1)
+   if not murl:
+      murl = \
+         "http://weather.noaa.gov/pub/data/observations/metar/decoded/%ID%.TXT"
+   murl = murl.replace("%ID%", id.upper())
+   murl = murl.replace("%Id%", id.capitalize())
+   murl = murl.replace("%iD%", id)
+   murl = murl.replace("%id%", id.lower())
+   murl = murl.replace(" ", "_")
+   metar = get_url(murl)
+   if verbose: return metar
+   else:
+      lines = metar.split("\n")
+      if not headers:
+         headers = \
+            "relative_humidity," \
+            + "precipitation_last_hour," \
+            + "sky conditions," \
+            + "temperature," \
+            + "weather," \
+            + "wind"
+      headerlist = headers.lower().replace("_"," ").split(",")
+      output = []
+      if not quiet:
+         title = "Current conditions at %s"
+         place = lines[0].split(", ")
+         if len(place) > 1:
+            place = "%s, %s (%s)" % (titlecap(place[0]), place[1], id.upper())
+         else: place = id.upper()
+         output.append(title%place)
+         output.append("Last updated " + lines[1])
+      for header in headerlist:
+         for line in lines:
+            if line.lower().startswith(header + ":"):
+               if line.endswith(":0") or line.endswith(":1"):
+                  line = line[:-2]
+               if imperial: line = filter_units(line, units="imperial")
+               elif metric: line = filter_units(line, units="metric")
+               if quiet: output.append(line)
+               else: output.append("   " + line)
+      return "\n".join(output)
+
+def get_alert(
+   zone,
+   verbose=False,
+   quiet=False,
+   atype=None,
+   aurl=None,
+   imperial=False,
+   metric=False
+):
+   """Return alert notice for the specified zone and type."""
+   if not zone:
+      import sys
+      sys.stderr.write("weather: error: zone required for alerts\n")
+      sys.exit(1)
+   if not atype: atype = "severe_weather_stmt"
+   if not aurl:
+      aurl = \
+         "http://weather.noaa.gov/pub/data/watches_warnings/%atype%/%zone%.txt"
+   aurl = aurl.replace("%ATYPE%", atype.upper())
+   aurl = aurl.replace("%Atype%", atype.capitalize())
+   aurl = aurl.replace("%atypE%", atype)
+   aurl = aurl.replace("%atype%", atype.lower())
+   aurl = aurl.replace("%ZONE%", zone.upper())
+   aurl = aurl.replace("%Zone%", zone.capitalize())
+   aurl = aurl.replace("%zonE%", zone)
+   aurl = aurl.replace("%zone%", zone.lower())
+   aurl = aurl.replace(" ", "_")
+   alert = get_url(aurl, ignore_fail=True).strip()
+   if alert:
+      if verbose: return alert
+      else:
+         lines = alert.split("\n")
+         muted = True
+         import calendar, re, time
+         valid_time = time.strftime("%Y%m%d%H%M")
+         #if not quiet: output = [ lines[3], lines[5] ]
+         #if not quiet: output = [ lines[8], lines[10] ]
+         #else: output = []
+         output = []
+         for line in lines:
+            if line.startswith("Expires:") and "Expires:"+valid_time > line:
+               return ""
+            if muted and line.find("...") != -1:
+               muted = False
+            if line == "$$" \
+               or line.startswith("LAT...LON") \
+               or line.startswith("TIME...MOT...LOC"):
+               muted = True
+            if line and not (
+               muted \
+               or line == "&&"
+               or re.match("^/.*/$", line) \
+               or re.match("^"+zone.split("/")[1][:3].upper()+".*", line)
+            ):
+               if quiet: output.append(line)
+               else: output.append("   " + line)
+         return "\n".join(output)
+
+def get_forecast(
+   city,
+   st,
+   verbose=False,
+   quiet=False,
+   flines="0",
+   furl=None,
+   imperial=False,
+   metric=False
+):
+   """Return the forecast for a specified city/st combination."""
+   if not city or not st:
+      import sys
+      sys.stderr.write("weather: error: city and st required for forecast\n")
+      sys.exit(1)
+   if not furl:
+      furl = "http://weather.noaa.gov/pub/data/forecasts/city/%st%/%city%.txt"
+   furl = furl.replace("%CITY%", city.upper())
+   furl = furl.replace("%City%", city.capitalize())
+   furl = furl.replace("%citY%", city)
+   furl = furl.replace("%city%", city.lower())
+   furl = furl.replace("%ST%", st.upper())
+   furl = furl.replace("%St%", st.capitalize())
+   furl = furl.replace("%sT%", st)
+   furl = furl.replace("%st%", st.lower())
+   furl = furl.replace(" ", "_")
+   forecast = get_url(furl)
+   if verbose: return forecast
+   else:
+      lines = forecast.split("\n")
+      output = []
+      if not quiet: output += lines[2:4]
+      flines = int(flines)
+      if not flines: flines = len(lines) - 5
+      for line in lines[5:flines+5]:
+         if imperial: line = filter_units(line, units="imperial")
+         elif metric: line = filter_units(line, units="metric")
+         if line.startswith("."):
+            if quiet: output.append(line.replace(".", "", 1))
+            else: output.append(line.replace(".", "   ", 1))
+      return "\n".join(output)
 
 def get_options(config):
-       """Parse the options passed on the command line."""
-       import optparse
-       usage = "usage: %prog [ options ] [ alias [ alias [...] ] ]"
-       verstring = "%prog " + version
-       option_parser = optparse.OptionParser(usage=usage, version=verstring)
-       if config.has_option("default", "city"):
-               default_city = config.get("default", "city")
-       else: default_city = "Raleigh Durham"
-       option_parser.add_option("-c", "--city",
-               dest="city",
-               default=default_city,
-               help="the city name (ex: \"Raleigh Durham\")")
-       if config.has_option("default", "forecast"):
-               default_forecast = bool(config.get("default", "forecast"))
-       else: default_forecast = False
-       option_parser.add_option("-f", "--forecast",
-               dest="forecast",
-               action="store_true",
-               default=default_forecast,
-               help="include a local forecast")
-       if config.has_option("default", "id"):
-               default_id = config.get("default", "id")
-       else: default_id = "KRDU"
-       option_parser.add_option("-i", "--id",
-               dest="id",
-               default=default_id,
-               help="the METAR station ID (ex: KRDU)")
-       option_parser.add_option("-l", "--list",
-               dest="list",
-               action="store_true",
-               default=False,
-               help="print a list of configured aliases")
-       if config.has_option("default", "conditions"):
-               default_conditions = bool(config.get("default", "conditions"))
-       else: default_conditions = True
-       option_parser.add_option("-n", "--no-conditions",
-               dest="conditions",
-               action="store_false",
-               default=default_conditions,
-               help="disable output of current conditions (forces -f)")
-       option_parser.add_option("-o", "--omit-forecast",
-               dest="forecast",
-               action="store_false",
-               default=default_forecast,
-               help="omit the local forecast (cancels -f)")
-       if config.has_option("default", "st"):
-               default_st = config.get("default", "st")
-       else: default_st = "NC"
-       option_parser.add_option("-s", "--st",
-               dest="st",
-               default=default_st,
-               help="the state abbreviation (ex: NC)")
-       if config.has_option("default", "verbose"):
-               default_verbose = bool(config.get("default", "verbose"))
-       else: default_verbose = False
-       option_parser.add_option("-v", "--verbose",
-               dest="verbose",
-               action="store_true",
-               default=default_verbose,
-               help="show full decoded feeds")
-       options, arguments = option_parser.parse_args()
-       return options, arguments
+   """Parse the options passed on the command line."""
+
+   # for optparse's builtin -h/--help option
+   usage = "usage: %prog [ options ] [ alias [ alias [...] ] ]"
+
+   # for optparse's builtin --version option
+   verstring = "%prog " + version
+
+   # create the parser
+   import optparse
+   option_parser = optparse.OptionParser(usage=usage, version=verstring)
+
+   # the -a/--alert option
+   if config.has_option("default", "alert"):
+      default_alert = bool(config.get("default", "alert"))
+   else: default_alert = False
+   option_parser.add_option("-a", "--alert",
+      dest="alert",
+      action="store_true",
+      default=default_alert,
+      help="include local alert notices")
+
+   # the --atypes option
+   if config.has_option("default", "atypes"):
+      default_atypes = config.get("default", "atypes")
+   else:
+      default_atypes = \
+         "flash_flood/statement," \
+         + "flash_flood/warning," \
+         + "flash_flood/watch," \
+         + "flood/coastal," \
+         + "flood/statement," \
+         + "flood/warning," \
+         + "non_precip," \
+         + "severe_weather_stmt," \
+         + "special_weather_stmt," \
+         + "thunderstorm," \
+         + "tornado," \
+         + "urgent_weather_message"
+   option_parser.add_option("--atypes",
+      dest="atypes",
+      default=default_atypes,
+      help="alert notification types to display")
+
+   # the --aurl option
+   if config.has_option("default", "aurl"):
+      default_aurl = config.get("default", "aurl")
+   else:
+      default_aurl = \
+         "http://weather.noaa.gov/pub/data/watches_warnings/%atype%/%zone%.txt"
+   option_parser.add_option("--aurl",
+      dest="aurl",
+      default=default_aurl,
+      help="alert URL (including %atype% and %zone%)")
+
+   # separate options object from list of arguments and return both
+   # the -c/--city option
+   if config.has_option("default", "city"):
+      default_city = config.get("default", "city")
+   else: default_city = ""
+   option_parser.add_option("-c", "--city",
+      dest="city",
+      default=default_city,
+      help="the city name (ex: \"Raleigh Durham\")")
+
+   # the --flines option
+   if config.has_option("default", "flines"):
+      default_flines = config.get("default", "flines")
+   else: default_flines = "0"
+   option_parser.add_option("--flines",
+      dest="flines",
+      default=default_flines,
+      help="maximum number of forecast lines to show")
+
+   # the -f/--forecast option
+   if config.has_option("default", "forecast"):
+      default_forecast = bool(config.get("default", "forecast"))
+   else: default_forecast = False
+   option_parser.add_option("-f", "--forecast",
+      dest="forecast",
+      action="store_true",
+      default=default_forecast,
+      help="include a local forecast")
+
+   # the --furl option
+   if config.has_option("default", "furl"):
+      default_furl = config.get("default", "furl")
+   else:
+      default_furl = \
+         "http://weather.noaa.gov/pub/data/forecasts/city/%st%/%city%.txt"
+   option_parser.add_option("--furl",
+      dest="furl",
+      default=default_furl,
+      help="forecast URL (including %city% and %st%)")
+
+   # the --headers option
+   if config.has_option("default", "headers"):
+      default_headers = config.get("default", "headers")
+   else:
+      default_headers = \
+         "temperature," \
+         + "relative_humidity," \
+         + "wind," \
+         + "weather," \
+         + "sky_conditions," \
+         + "precipitation_last_hour"
+   option_parser.add_option("--headers",
+      dest="headers",
+      default=default_headers,
+      help="the conditions headers to display")
+
+   # the -i/--id option
+   if config.has_option("default", "id"):
+      default_id = config.get("default", "id")
+   else: default_id = ""
+   option_parser.add_option("-i", "--id",
+      dest="id",
+      default=default_id,
+      help="the METAR station ID (ex: KRDU)")
+
+   # the --imperial option
+   if config.has_option("default", "imperial"):
+      default_imperial = bool(config.get("default", "imperial"))
+   else: default_imperial = False
+   option_parser.add_option("--imperial",
+      dest="imperial",
+      action="store_true",
+      default=default_imperial,
+      help="filter/convert for US/UK units")
+
+   # the -l/--list option
+   option_parser.add_option("-l", "--list",
+      dest="list",
+      action="store_true",
+      default=False,
+      help="print a list of configured aliases")
+
+   # the -m/--metric option
+   if config.has_option("default", "metric"):
+      default_metric = bool(config.get("default", "metric"))
+   else: default_metric = False
+   option_parser.add_option("-m", "--metric",
+      dest="metric",
+      action="store_true",
+      default=default_metric,
+      help="filter/convert for metric units")
+
+   # the --murl option
+   if config.has_option("default", "murl"):
+      default_murl = config.get("default", "murl")
+   else:
+      default_murl = \
+         "http://weather.noaa.gov/pub/data/observations/metar/decoded/%ID%.TXT"
+   option_parser.add_option("--murl",
+      dest="murl",
+      default=default_murl,
+      help="METAR URL (including %id%)")
+
+   # the -n/--no-conditions option
+   if config.has_option("default", "conditions"):
+      default_conditions = bool(config.get("default", "conditions"))
+   else: default_conditions = True
+   option_parser.add_option("-n", "--no-conditions",
+      dest="conditions",
+      action="store_false",
+      default=default_conditions,
+      help="disable output of current conditions (forces -f)")
+
+   # the -o/--omit-forecast option
+   option_parser.add_option("-o", "--omit-forecast",
+      dest="forecast",
+      action="store_false",
+      default=default_forecast,
+      help="omit the local forecast (cancels -f)")
+
+   # the -q/--quiet option
+   if config.has_option("default", "quiet"):
+      default_quiet = bool(config.get("default", "quiet"))
+   else: default_quiet = False
+   option_parser.add_option("-q", "--quiet",
+      dest="quiet",
+      action="store_true",
+      default=default_quiet,
+      help="skip preambles and don't indent")
+
+   # the -s/--st option
+   if config.has_option("default", "st"):
+      default_st = config.get("default", "st")
+   else: default_st = ""
+   option_parser.add_option("-s", "--st",
+      dest="st",
+      default=default_st,
+      help="the state abbreviation (ex: NC)")
+
+   # the -v/--verbose option
+   if config.has_option("default", "verbose"):
+      default_verbose = bool(config.get("default", "verbose"))
+   else: default_verbose = False
+   option_parser.add_option("-v", "--verbose",
+      dest="verbose",
+      action="store_true",
+      default=default_verbose,
+      help="show full decoded feeds (cancels -q)")
+
+   # the -z/--zones option
+   if config.has_option("default", "zones"):
+      default_zones = config.get("default", "zones")
+   else: default_zones = ""
+   option_parser.add_option("-z", "--zones",
+      dest="zones",
+      default=default_zones,
+      help="alert zones (ex: nc/ncc183,nc/ncz041)")
+
+   options, arguments = option_parser.parse_args()
+   return options, arguments
 
 def get_config():
-       """Parse the aliases and configuration."""
-       import ConfigParser
-       config = ConfigParser.ConfigParser()
-       import os.path
-       rcfiles = [
-               "/etc/weatherrc",
-               os.path.expanduser("~/.weatherrc"),
-               "weatherrc"
-               ]
-       import os
-       for rcfile in rcfiles:
-               if os.access(rcfile, os.R_OK): config.read(rcfile)
-       for section in config.sections():
-               if section != section.lower():
-                       if config.has_section(section.lower()):
-                               config.remove_section(section.lower())
-                       config.add_section(section.lower())
-                       for option,value in config.items(section):
-                               config.set(section.lower(), option, value)
-       return config
+   """Parse the aliases and configuration."""
+   import ConfigParser
+   config = ConfigParser.ConfigParser()
+   import os.path
+   rcfiles = [
+      "/etc/weatherrc",
+      os.path.expanduser("~/.weatherrc"),
+      "weatherrc"
+      ]
+   import os
+   for rcfile in rcfiles:
+      if os.access(rcfile, os.R_OK): config.read(rcfile)
+   for section in config.sections():
+      if section != section.lower():
+         if config.has_section(section.lower()):
+            config.remove_section(section.lower())
+         config.add_section(section.lower())
+         for option,value in config.items(section):
+            config.set(section.lower(), option, value)
+   return config
 
 def list_aliases(config):
-       """Return a formatted list of aliases defined in the config."""
-       sections = []
-       for section in sorted(config.sections()):
-               if section.lower() not in sections and section != "default":
-                       sections.append(section.lower())
-       output = "configured aliases..."
-       for section in sorted(sections):
-               output += "\n   " \
-                       + section \
-                       + ": --id=" \
-                       + quote(config.get(section, "id")) \
-                       + " --city=" \
-                       + quote(config.get(section, "city")) \
-                       + " --st=" \
-                       + quote(config.get(section, "st"))
-       return output
+   """Return a formatted list of aliases defined in the config."""
+   sections = []
+   for section in sorted(config.sections()):
+      if section.lower() not in sections and section != "default":
+         sections.append(section.lower())
+   output = "configured aliases..."
+   for section in sorted(sections):
+      output += "\n   " \
+         + section \
+         + ": --id=" \
+         + quote(config.get(section, "id")) \
+         + " --city=" \
+         + quote(config.get(section, "city")) \
+         + " --st=" \
+         + quote(config.get(section, "st"))
+   return output