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- # !/usr/bin/python
- # -*- coding: utf-8 -*-
- import dash
- import dash_core_components as dcc
- import dash_html_components as html
- import plotly.graph_objs as go
- import pandas as pd
- #задаем данные для отрисовки
- from sqlalchemy import create_engine
- # пример подключения к базе данных для Postresql
- # db_config = {'user': 'my_user',
- # 'pwd': 'my_user_password',
- # 'host': 'localhost',
- # 'port': 5432,
- # 'db': 'games'}
- # engine = create_engine('postgresql://{}:{}@{}:{}/{}'.format(db_config['user'],
- # db_config['pwd'],
- # db_config['host'],
- # db_config['port'],
- # db_config['db']))
- # пример подключения к базе данных для Sqlite
- engine = create_engine('sqlite:////db/games.db', echo = False)
- # получаем сырые данные
- query = '''
- SELECT * FROM data_raw
- '''
- games_raw = pd.io.sql.read_sql(query, con = engine)
- # формируем данные для отчета
- games_grouped = (games_raw.groupby(['genre', 'year_of_release'])
- .agg({'name':'count'})
- .reset_index()
- .rename(columns = {'name':'Games Released'})
- )
- # формируем графики для отрисовки
- data_games_by_year = []
- for genre in games_grouped['genre'].unique():
- current = games_grouped.query('genre == @genre')
- data_games_by_year += [go.Scatter(x = current['Year_of_Release'],
- y = current['Games Released'],
- mode = 'lines',
- stackgroup = 'one',
- name = genre)]
- # задаем лейаут
- external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']
- app = dash.Dash(__name__, external_stylesheets=external_stylesheets,compress=False)
- app.layout = html.Div(children=[
- # формируем html
- html.H1(children = 'Выпуск игр по годам'),
- dcc.Graph(
- figure = {'data': data_games_by_year,
- 'layout': go.Layout(xaxis = {'title': 'Год'},
- yaxis = {'title': 'Выпущенные игры'})
- },
- id = 'games_by_year'
- ),
- ])
- # описываем логику дашборда
- if __name__ == '__main__':
- app.run_server(host='0.0.0.0', port=3000)
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