map-machine/mapper.py
2015-07-29 01:13:43 +03:00

708 lines
27 KiB
Python

#!/usr/bin/python
# -*- coding: utf-8 -*- from __future__ import unicode_literals
"""
Simple tool for working with OpenStreetMap data.
Author: Sergey Vartanov (me@enzet.ru).
"""
import datetime
import os
import re
import sys
import xml.dom.minidom
import extract_icon
import osm_reader
from flinger import GeoFlinger, Geo
sys.path.append('lib')
import svg
from vector import Vector
input_file_name = sys.argv[1]
if not os.path.isfile(input_file_name):
print 'Fatal: no such file: ' + input_file_name + '.'
sys.exit(1)
#start_time = datetime.datetime.now()
#input_file = open(input_file_name)
#content = xml.dom.minidom.parse(input_file)
#input_file.close()
#print 'File readed in ' + str(datetime.datetime.now() - start_time) + '.'
node_map, way_map, relation_map = osm_reader.parse_osm_file(input_file_name)
output_file = svg.SVG(open(sys.argv[2], 'w+'))
w, h = 2000, 2000
background_color = '000000' # 'EEEEEE'
grass_color = 'C8DC94'
sand_color = 'F0E0D0'
beach_color = 'F0E0C0'
desert_color = 'F0E0D0'
playground_color = '884400'
parking_color = 'DDCC99'
water_color = 'AACCFF'
water_border_color = '6688BB'
wood_color = 'B8CC84'
tags_to_write = ['operator', 'opening_hours', 'cuisine', 'network', 'website',
'phone', 'branch', 'route_ref', 'brand', 'ref', 'wikipedia',
'description', 'level', 'wikidata', 'name']
prefix_to_write = ['addr', 'contact', 'name', 'operator', 'wikipedia']
tags_to_skip = ['note', 'layer']
output_file.begin(w, h)
output_file.rect(0, 0, w, h, color=background_color)
minimum = Geo(180, 180)
maximum = Geo(-180, -180)
if len(sys.argv) > 3:
min1 = Geo(float(sys.argv[5]), float(sys.argv[3]))
max1 = Geo(float(sys.argv[6]), float(sys.argv[4]))
authors = {}
missed_tags = {}
def get_d_from_file(file_name):
path, x, y = icons.get_path(file_name)
if path:
return path, x, y
else:
# print 'No such icon: ' + file_name
# TODO: add to missed icons
return 'M 4,4 L 4,10 10,10 10,4 4,4', 0, 0
# Old style.
if os.path.isfile('icons/' + file_name + '.svg'):
file_name = 'icons/' + file_name + '.svg'
size = 16
elif os.path.isfile('icons/' + file_name + '.16.svg'):
file_name = 'icons/' + file_name + '.16.svg'
size = 16
elif os.path.isfile('icons/' + file_name + '-12.svg'):
file_name = 'icons/' + file_name + '-12.svg'
size = 12
elif os.path.isfile('icons/' + file_name + '.12.svg'):
file_name = 'icons/' + file_name + '.12.svg'
size = 12
elif os.path.isfile('icons/' + file_name + '.10.svg'):
file_name = 'icons/' + file_name + '.10.svg'
size = 10
else:
print 'Unknown file:', file_name
return 'M 4,4 L 4,10 10,10 10,4 4,4', 16
f = open(file_name).read().split('\n')
for line in f:
m = re.match('.* d="(?P<path>[AaMmCcLlZz0-9Ee., -]*)".*', line)
if m:
return m.group('path'), size
def get_min_max(node_map):
key = node_map.keys()[0]
maximum = Geo(node_map[key]['lon'], node_map[key]['lat'])
minimum = Geo(node_map[key]['lon'], node_map[key]['lat'])
for node_id in node_map:
node = node_map[node_id]
if node['lat'] > maximum.lat: maximum.lat = node['lat']
if node['lat'] < minimum.lat: minimum.lat = node['lat']
if node['lon'] > maximum.lon: maximum.lon = node['lon']
if node['lon'] < minimum.lon: minimum.lon = node['lon']
return minimum, maximum
minimum, maximum = get_min_max(node_map)
if len(sys.argv) > 3:
flinger = GeoFlinger(min1, max1, Vector(0, 0), Vector(w, h))
else:
flinger = GeoFlinger(minimum, maximum, Vector(25, 25), Vector(975, 975))
def draw_path(nodes, style, shift=Vector()):
prev_node = None
for node_id in nodes:
node = node_map[node_id]
flinged1 = flinger.fling(Geo(node['lat'], node['lon'])) + shift
if prev_node:
flinged2 = flinger.fling(Geo(prev_node['lat'], prev_node['lon'])) + shift
output_file.write('L ' + `flinged1.x` + ',' + `flinged1.y` + ' ')
else:
output_file.write('<path d="M ' + `flinged1.x` + \
',' + `flinged1.y` + ' ')
prev_node = node_map[node_id]
output_file.write('" style="' + style + '" />\n')
def draw_point_shape(name, x, y, fill):
if not isinstance(name, list):
name = [name]
for one_name in name:
shape, xx, yy = get_d_from_file(one_name)
draw_point(shape, x, y, fill, size=16, xx=xx, yy=yy)
def draw_point(shape, x, y, fill, size=16, xx=0, yy=0):
x = int(float(x))
y = int(float(y))
output_file.write('<path d="' + shape + \
'" style="fill:#FFFFFF;opacity:0.5;stroke:#FFFFFF;stroke-width:3;stroke-linejoin:round;" transform="translate(' + \
str(x - size / 2.0 - xx * 16) + ',' + str(y - size / 2.0 - yy * 16) + ')" />\n')
output_file.write('<path d="' + shape + \
'" style="fill:#' + fill + ';fill-opacity:1" transform="translate(' + \
str(x - size / 2.0 - xx * 16) + ',' + str(y - size / 2.0 - yy * 16) + ')" />\n')
def draw_text(text, x, y, fill):
if type(text) == unicode:
text = text.encode('utf-8')
text = text.replace('&', 'and')
if text[:7] == 'http://' or text[:8] == 'https://':
text = 'link'
fill = '0000FF'
return
output_file.write('<text x="' + x + '" y="' + y + \
'" style="font-size:10;text-anchor:middle;font-family:Myriad Pro;fill:#FFFFFF;stroke-linejoin:round;stroke-width:5;stroke:#FFFFFF;opacity:0.5;">' + text + '</text>')
output_file.write('<text x="' + x + '" y="' + y + \
'" style="font-size:10;text-anchor:middle;font-family:Myriad Pro;fill:#' + fill + ';">' + text + '</text>')
def point(k, v, x, y, fill, text_y):
if ('node ' + k + ': ' + v) in missed_tags:
missed_tags['node ' + k + ': ' + v] += 1
else:
missed_tags['node ' + k + ': ' + v] = 1
#output_file.circle(float(x), float(y), 2, fill=fill, color=fill)
text = k + ': ' + v
if type(text) == unicode:
text = text.encode('utf-8')
output_file.write('<text x="' + str(x) + '" y="' + str(int(float(y)) + text_y + 10) + \
'" style="font-size:10;text-anchor:middle;font-family:Myriad Pro;fill:#FF0000;">' + text + '</text>')
# Ways drawing
def construct_layers():
"""
Construct layers. One layer may contain elements of different types.
"""
layers = {}
for way_id in way_map:
way = way_map[way_id]
if not ('layer' in way['tags']):
way['tags']['layer'] = 0
if not (int(way['tags']['layer']) in layers):
layers[int(way['tags']['layer'])] = \
{'b': [], 'h1': [], 'h2': [], 'r': [], 'n': [], 'l': [],
'a': [], 'le': [], 'ba': [], 'bo': []}
layer = layers[int(way['tags']['layer'])]
if 'building' in way['tags']:
layer['b'].append(way)
if 'natural' in way['tags']:
layer['n'].append(way)
if 'landuse' in way['tags']:
layer['l'].append(way)
if 'railway' in way['tags']:
layer['r'].append(way)
if 'amenity' in way['tags']:
layer['a'].append(way)
if 'leisure' in way['tags']:
layer['le'].append(way)
if 'barrier' in way['tags']:
layer['ba'].append(way)
if 'highway' in way['tags']:
layer['h1'].append(way)
layer['h2'].append(way)
if 'boundary' in way['tags']:
layer['bo'].append(way)
#else:
# empty = True
# for key in way['tags'].keys():
# if not (key in ['layer', 'note']):
# empty = False
# if not empty:
# print 'Unknown kind of way:', way['tags']
return layers
layers = construct_layers()
def draw_raw_ways():
for way_id in way_map:
way = way_map[way_id]
draw_path(way['nodes'], 'stroke:#FFFFFF;fill:none;stroke-width:0.2;')
def line_center(node_ids):
ma = Vector()
mi = Vector(10000, 10000)
for node_id in node_ids:
node = node_map[node_id]
flinged = flinger.fling(Geo(node['lat'], node['lon']))
if flinged.x > ma.x: ma.x = flinged.x
if flinged.y > ma.y: ma.y = flinged.y
if flinged.x < mi.x: mi.x = flinged.x
if flinged.y < mi.y: mi.y = flinged.y
return Vector((ma.x + mi.x) / 2.0, (ma.y + mi.y) / 2.0)
def draw_ways():
for level in sorted(layers.keys()):
layer = layers[level]
#for entity in ['b', 'h1', 'h2', 'r', 'n', 'l', 'a', 'le', 'ba']:
# Pre part.
for way in layer['le']:
if way['tags']['leisure'] == 'park':
style = 'fill:#' + grass_color + ';'
else:
continue
draw_path(way['nodes'], style)
# Post part.
for way in layer['l']:
text_y = 0
c = line_center(way['nodes'])
if way['tags']['landuse'] == 'grass':
style = 'fill:#' + grass_color + ';stroke:none;'
draw_path(way['nodes'], style)
elif way['tags']['landuse'] == 'conservation':
style = 'fill:#' + grass_color + ';stroke:none;'
draw_path(way['nodes'], style)
elif way['tags']['landuse'] == 'forest':
style = 'fill:#' + wood_color + ';stroke:none;'
draw_path(way['nodes'], style)
elif way['tags']['landuse'] == 'garages':
style = 'fill:#' + parking_color + ';stroke:none;'
draw_path(way['nodes'], style)
draw_point_shape('parking', c.x, c.y, '444444')
elif way['tags']['landuse'] in ['residential', 'commercial']:
continue
else:
style = 'fill:#0000FF;stroke:none;'
draw_path(way['nodes'], style)
for tag in way['tags']:
if not (tag in ['landuse', 'layer']):
point(tag, str(way['tags'][tag]), c.x, c.y, '000000', text_y)
text_y += 10
for way in layer['a']:
c = line_center(way['nodes'])
if way['tags']['amenity'] == 'parking':
style = 'fill:#' + parking_color + ';stroke:none;'
draw_path(way['nodes'], style)
draw_point_shape('parking', c.x, c.y, '444444')
elif way['tags']['amenity'] == 'school':
continue
else:
style = 'fill:#0000FF;stroke:none;'
draw_path(way['nodes'], style)
for way in layer['n']:
if way['tags']['natural'] == 'wood':
style = 'fill:#' + wood_color + ';stroke:none;'
elif way['tags']['natural'] == 'scrub':
style = 'fill:#' + wood_color + ';stroke:none;'
elif way['tags']['natural'] == 'sand':
style = 'fill:#' + sand_color + ';stroke:none;'
elif way['tags']['natural'] == 'beach':
style = 'fill:#' + beach_color + ';stroke:none;'
elif way['tags']['natural'] == 'desert':
style = 'fill:#' + desert_color + ';stroke:none;'
elif way['tags']['natural'] == 'water':
style = 'fill:#' + water_color + ';stroke:#' + water_border_color + ';stroke-width:1.0;'
elif way['tags']['natural'] == 'forest':
style = 'fill:#' + wood_color + ';stroke:none;'
else:
continue
draw_path(way['nodes'], style)
for way in layer['r']:
v = way['tags']['railway']
style = 'fill:none;stroke-dasharray:none;stroke-linejoin:round;stroke-linecap:round;stroke-width:'
if v == 'subway': style += '10;stroke:#DDDDDD;'
if v in ['narrow_gauge', 'tram']:
style += '2;stroke:#000000;'
else:
continue
draw_path(way['nodes'], style)
for way in layer['h1']:
if 'tunnel' in way['tags'] and way['tags']['tunnel'] == 'yes':
style = 'fill:none;stroke:#FFFFFF;stroke-dasharray:none;stroke-linejoin:round;stroke-linecap:round;stroke-width:10;'
draw_path(way['nodes'], style)
for way in layer['h1']:
v = way['tags']['highway']
style = 'fill:none;stroke:#AAAAAA;stroke-dasharray:none;stroke-linejoin:round;stroke-linecap:round;stroke-width:'
if v == 'motorway': style += '30'
elif v == 'trunk': style += '25'
elif v == 'primary': style += '20;stroke:#AA8800'
elif v == 'secondary': style += '13'
elif v == 'tertiary': style += '11'
elif v == 'unclassified': style += '9'
elif v == 'residential': style += '8'
elif v == 'service': style += '7'
elif v == 'track': style += '3'
elif v in ['footway', 'pedestrian']: style += '2'
elif v == 'steps': style += '5;stroke-dasharray:1,2;stroke-linecap:round'
elif v == 'path': style += '1;stroke-dasharray:5,5;stroke-linecap:round'
else:
continue
style += ';'
draw_path(way['nodes'], style)
for way in layer['h2']:
v = way['tags']['highway']
style = 'fill:none;stroke:#FFFFFF;stroke-linecap:round;stroke-linejoin:round;stroke-width:'
if v == 'motorway': style += '28'
elif v == 'trunk': style += '23'
elif v == 'primary': style += '19;stroke:#FFDD66'
elif v == 'secondary': style += '11'
elif v == 'tertiary': style += '9'
elif v == 'unclassified': style += '7'
elif v == 'residential': style += '6'
elif v == 'service': style += '5'
else:
continue
style += ';'
draw_path(way['nodes'], style)
for way in layer['b']:
floors = 0
text_y = 0
#if 'building:levels' in way['tags']:
#floors = float(way['tags']['building:levels'])
draw_path(way['nodes'], 'fill:#D0D0C0;stroke:#AAAAAA;opacity:1.0;')
c = line_center(way['nodes'])
for tag in way['tags']:
v = way['tags'][tag]
if tag == 'building':
if v == 'yes':
pass
elif v == 'apartments':
draw_point_shape('apartments', c.x, c.y, '444444')
elif v == 'kindergarten':
draw_point_shape('playground', c.x, c.y, '444444')
elif tag == 'amenity':
if v == 'cafe':
draw_point_shape('cafe', c.x, c.y, '444444')
elif v == 'theatre':
draw_point_shape('theatre', c.x, c.y, '444444')
elif v == 'fast_food':
draw_point_shape('fast_food', c.x, c.y, '444444')
elif v == 'snack_cart':
draw_point_shape('cafe', c.x, c.y, '444444')
elif tag == 'shop':
if v == 'clothes':
draw_point_shape('shop_clothes', c.x, c.y, '444444')
elif v == 'gift':
draw_point_shape('shop_gift', c.x, c.y, '444444')
elif tag == 'power':
draw_point_shape('electricity', c.x, c.y, '444444')
elif tag in ['name', 'addr:housenumber', 'cladr:code',
'addr:city', 'addr:street', 'website',
'wikidata'] or \
'name' in tag or 'wikipedia' in tag:
draw_text(v, str(c.x), str(c.y + 18 + text_y), '444444')
text_y += 10
elif tag == 'addr:country':
if v == 'RU':
draw_text('Россия', str(c.x), str(c.y + 18 + text_y), '444444')
else:
draw_text(v, str(c.x), str(c.y + 18 + text_y), '444444')
text_y += 10
elif tag in ['layer', 'height']:
pass
elif tag in ['building:levels']:
pass
else:
kk = tag
vv = v
if ('way ' + kk + ': ' + vv) in missed_tags:
missed_tags['way ' + kk + ': ' + vv] += 1
else:
missed_tags['way ' + kk + ': ' + vv] = 1
for way in layer['le']:
c = line_center(way['nodes'])
if way['tags']['leisure'] == 'playground':
style = 'fill:#' + playground_color + ';opacity:0.2;'
draw_point_shape('playground', c.x, c.y, '444444')
elif way['tags']['leisure'] == 'garden':
style = 'fill:#' + grass_color + ';'
elif way['tags']['leisure'] == 'pitch':
style = 'fill:#' + playground_color + ';opacity:0.2;'
elif way['tags']['leisure'] == 'park':
continue
else:
style = 'fill:#FF0000;opacity:0.2;'
draw_path(way['nodes'], style)
for way in layer['ba']:
if way['tags']['barrier'] == 'hedge':
style += 'fill:none;stroke:#' + wood_color + ';stroke-width:4;'
else:
style += 'fill:none;stroke:#000000;stroke-width:1;opacity:0.4;'
draw_path(way['nodes'], style)
for way in layer['bo']:
style += 'fill:none;stroke:#FF0000;stroke-width:0.5;stroke-dahsarray:10,20;'
draw_path(way['nodes'], style)
print 'Done.'
# Nodes drawing
def draw_raw_nodes():
for node_id in node_map:
node = node_map[node_id]
flinged = flinger.fling(node)
output_file.circle(flinged.x, flinged.y, 0.2, color='FFFFFF')
def no_draw(key):
if key in tags_to_write or key in tags_to_skip:
return True
for prefix in prefix_to_write:
if key[:len(prefix) + 1] == prefix + ':':
return True
return False
def draw_nodes():
print 'Draw nodes...'
for node_id in node_map:
node = node_map[node_id]
flinged = flinger.fling(Geo(node['lat'], node['lon']))
x = `flinged.x`
y = `flinged.y`
text_y = 0
if 'tags' in node:
p = node['tags']
else:
p = {}
fill = '444444'
if 'colour' in p:
if p['colour'] == 'blue':
fill='2233AA'
radius=3
if p == {}:
pass
elif 'amenity' in p:
k = 'amenity'
v = p['amenity']
processed = set([k])
if v in ['bench', 'bicycle_parking', 'cafe', 'waste_basket',
'clinic', 'restaurant', 'pharmacy', 'drinking_water',
'toilets', 'theatre', 'bar', 'bank', 'pub', 'post_office']:
draw_point_shape(v, x, y, fill)
elif v == 'fast_food':
shape = 'fast_food'
if 'operator' in p:
if p['operator'] == "McDonald's":
shape = 'mcdonalds'
processed.add('operator')
if 'operator:en' in p:
if p['operator:en'] == "McDonald's":
shape = 'mcdonalds'
processed.add('operator:en')
draw_point_shape(shape, x, y, fill)
elif v == 'shop':
if 'shop' in p:
if p['shop'] in ['fishing']:
draw_point_shape('shop_' + p['shop'], x, y, fill)
elif v == 'fountain':
draw_point_shape('fountain', x, y, water_border_color)
elif v == 'recycling':
if not 'recycling_type' in p:
draw_point_shape('recycling', x, y, fill)
else:
processed.remove(k)
for k in p:
if 'karaoke' in p:
if p['karaoke'] == 'yes':
draw_point_shape('microphone', flinged.x + 16, y, fill)
else:
point(k, p[k], x, y, fill, text_y)
elif not no_draw(k) and not (k in processed):
point(k, p[k], x, y, fill, text_y)
text_y += 10
elif 'natural' in p:
k = 'natural'
v = p['natural']
processed = set([k])
if v == 'tree':
shape = 'tree'
if 'leaf_type' in p and p['leaf_type'] in ['broadleaved', 'needleleaved']:
shape = p['leaf_type']
processed.add(p['leaf_type'])
if 'denotation' in p and p['denotation'] == 'urban':
draw_point_shape([shape, 'urban_tree_pot'], x, y, wood_color)
processed.add('denotation')
elif v == 'cave_entrance':
draw_point_shape('cave', x, y, fill)
elif v == 'bush':
draw_point_shape('bush', x, y, wood_color)
else:
processed.remove(k)
for k in p:
if not no_draw(k) and not (k in processed):
point(k, p[k], x, y, fill, text_y)
text_y += 10
elif 'entrance' in p:
k = 'entrance'
v = p['entrance']
processed = set([k])
if v == 'yes':
draw_point_shape('entrance', x, y, fill)
elif v == 'staircase':
draw_point_shape('staircase', x, y, fill)
else:
processed.remove(k)
for k in p:
if not no_draw(k) and not (k in processed):
point(k, p[k], x, y, fill, text_y)
text_y += 10
elif 'highway' in p:
k = 'highway'
v = p['highway']
processed = set([k])
if v == 'crossing':
shape = 'crossing'
if 'crossing' in p:
if p['crossing'] == 'zebra':
shape = 'zebra'
elif 'crossing_ref' in p:
if p['crossing_ref'] == 'zebra':
shape = 'zebra'
draw_point_shape(shape, x, y, fill)
elif v == 'street_lamp':
draw_point_shape('street_lamp', x, y, fill)
else:
processed.remove(k)
for k in p:
if not no_draw(k) and not (k in processed):
point(k, p[k], x, y, fill, text_y)
text_y += 10
else:
for k in p:
if not no_draw(k):
point(k, p[k], x, y, fill, text_y)
text_y += 10
for k in []:
v = p[k]
if k == 'amenity':
if v in ['bench', 'bicycle_parking', 'cafe', 'waste_basket',
'restaurant', 'pharmacy', 'drinking_water', 'toilets',
'fast_food', 'theatre']:
draw_point_shape(v, x, y, fill)
elif k == 'artwork_type':
if v == 'statue':
draw_point_shape('monument', x, y, fill)
if v == 'sculpture':
draw_point_shape('monument', x, y, fill)
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
elif k == 'barrier':
if v == 'lift_gate':
draw_point_shape('liftgate', x, y, fill)
elif k in ['crossing', 'crossing_ref']:
if v == 'zebra':
draw_point_shape('crossing', x, y, fill)
elif k == 'entrance':
draw_point_shape('entrance', x, y, fill)
elif k == 'highway':
if v == 'street_lamp':
draw_point_shape('street_lamp', x, y, fill)
elif v == 'bus_stop':
draw_point_shape('bus_stop', x, y, fill)
elif v == 'traffic_signals':
draw_point_shape('traffic_signal', x, y, fill)
elif v == 'crossing':
if not ('crossing' in p):
draw_point_shape('crossing', x, y, fill)
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
elif k == 'man_made':
if v == 'pole':
draw_point_shape('pole', x, y, fill)
elif v == 'flagpole':
draw_point_shape('flagpole', x, y, fill)
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
elif k == 'recycling_type':
if v == 'centre':
draw_point_shape('recycling', x, y, fill)
else:
draw_point_shape('recycling', x, y, fill)
elif k == 'shop':
if v == 'florist':
draw_point_shape('florist', x, y, fill)
elif v in ['clothes', 'shoes', 'gift']:
draw_point_shape('shop_' + v, x, y, fill)
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
elif k == 'traffic_calming':
if v == 'bump':
draw_point_shape('bump', x, y, fill)
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
elif k == 'emergency':
if v == 'fire_hydrant':
draw_point_shape(v, x, y, fill)
elif k == 'historic':
if v == 'memorial':
draw_point_shape('monument', x, y, fill)
elif k == 'tourism':
if v == 'artwork':
if not ('artwork_type' in p):
draw_point_shape('monument', x, y, fill)
if v == 'attraction':
draw_point_shape('monument', x, y, fill)
elif k in undraw or ('name' in k):
if k == 'route_ref':
v = v.replace(';', ' ')
draw_text(v, x, str(flinged.y + 18 + text_y), fill)
text_y += 10
elif k in ['layer', 'level', 'source', 'note', 'description']:
pass # NOTHING TO DRAW
else:
point(k, v, flinged.x, flinged.y, fill, text_y)
text_y += 10
print 'Done.'
#draw_raw_nodes()
#draw_raw_ways()
text_y = 0
icons = extract_icon.IconExtractor('icons.svg')
#sys.exit(0)
draw_ways()
draw_nodes()
if flinger.space.x == 0:
output_file.rect(0, 0, w, flinger.space.y, color='FFFFFF')
output_file.rect(0, h - flinger.space.y, w, flinger.space.y, color='FFFFFF')
output_file.end()
print '\nMissing tags:\n'
top_missed_tags = reversed(sorted(missed_tags.keys(), key=lambda x: -missed_tags[x]))
for tag in top_missed_tags:
print tag + ' (' + str(missed_tags[tag]) + ')'
sys.exit(0)
top_authors = sorted(authors.keys(), key=lambda x: -authors[x])
for author in top_authors:
print author + ': ' + str(authors[author])