import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import urllib
from bs4 import BeautifulSoup
url_adresa = 'https://en.wikipedia.org/wiki/Demographics_of_Croatia'
html = urllib.urlopen(url_adresa).read()
soup = BeautifulSoup(html)
table = soup.find("table")
ethic_groups=[];
census48 = [];
census53 = [];
census61 = [];
census71 = [];
census81 = [];
census91 = [];
census01 = [];
census11 = [];
for table_row in soup.select("tr"):
    cells = table_row.findAll("td")
    if len(cells)==17:
        ethic_groups.append(cells[0].text.strip())
        c48 =cells[2].text.strip()
        if c48 == '':
            c48=0
        census48.append(float(c48));
        c53 =cells[4].text.strip()
        if c53 == '':
            c53=0
        census53.append(float(c53));
        census61.append(float(cells[6].text.strip()))
        census71.append(float(cells[8].text.strip()))
        census81.append(float(cells[10].text.strip()))
        census91.append(float(cells[12].text.strip()))
        census01.append(float(cells[14].text.strip()))
        census11.append(float(cells[16].text.strip()))
d = {'1948.':census48,'1953.': census53,'1961.': census61,'1971.': census71,'1981.':census81,'1991.':census91,'2001.':census01,'2011.':census11}
df = pd.DataFrame(d,index=ethic_groups)
ax = df.plot.bar()
ax.set_ylabel('Postotak stanovnistva')