In [1]:

    

import urllib
from bs4 import BeautifulSoup
from datetime import datetime
import numpy as np
from matplotlib import pyplot as plt
%matplotlib inline  

print ("Packages loaded")


    

    




Packages loaded

In [2]:

    

dates = []
date_strs = []
last_trade_prices = []
for nrpage in range(200):
    rawurl = "http://finance.naver.com/sise/sise_index_day.nhn?code=KOSPI&page="
    url = rawurl + str(nrpage+1)
    # Get data (parse)
    soup = BeautifulSoup(urllib.urlopen(url).read())
    dateinfo  = soup.find_all('td', {'class': 'date'})
    valueinfo = soup.find_all('td', {'class': 'number_1'})
    nrdata    = len(valueinfo)
    for i in range(nrdata):
        # Date
        currdate = str(dateinfo[int(i/4)])
        currdate = currdate.replace('<td class="date">', '')
        currdate = currdate.replace('</td>', '')
        currdate = currdate.replace('.', "")

        # Values
        currdata = str(valueinfo[i])
        currdata = currdata.replace('<td class="number_1">', "")
        currdata = currdata.replace('</td>', "")
        currdata = currdata.replace('<span class="tah p11 red01">', '')
        currdata = currdata.replace('</span>', "")
        currdata = currdata.replace('<td class="number_1" style="padding-right:40px;">', "")
        currdata = currdata.replace('<td class="number_1" style="padding-right:30px;">', "")
        currdata = currdata.replace('<span class="tah p11 nv01">', "")
        currdata = currdata.replace(' ', "")
        currdata = currdata.replace('\n', "")
        currdata = currdata.replace('\t', "")
        currdata = currdata.replace(',', "")

        if i % 4 == 0:
            print ("\nCurr date is %s" % (currdate))
            date_strs.append(currdate)
            dates.append(float(currdate))
            print ("Last traded price: %s" % (currdata))
            last_trade_prices.append(float(currdata))
        elif i % 4 == 1:
            print ("Fluctuation ratio: %s" % (currdata))
        elif i % 4 == 2:
            print ("Traded volume:     %s" % (currdata))
        elif i % 4 == 3:
            print ("Traded price:      %s" % (currdata))
# Reverse 
dates.reverse()
date_strs.reverse()
last_trade_prices.reverse()


    

    




Curr date is 20160725
Last traded price: 2009.52
Fluctuation ratio: -0.04%
Traded volume:     209464
Traded price:      2075669

Curr date is 20160722
Last traded price: 2010.34
Fluctuation ratio: -0.09%
Traded volume:     316365
Traded price:      3686869

Curr date is 20160721
Last traded price: 2012.22
Fluctuation ratio: -0.16%
Traded volume:     387481
Traded price:      3847464

Curr date is 20160720
Last traded price: 2015.46
Fluctuation ratio: -0.07%
Traded volume:     309989
Traded price:      3438452

Curr date is 20160719
Last traded price: 2016.89
Fluctuation ratio: -0.21%
Traded volume:     377425
Traded price:      3693836

Curr date is 20160718
Last traded price: 2021.11
Fluctuation ratio: +0.19%
Traded volume:     376256
Traded price:      3489650

Curr date is 20160715
Last traded price: 2017.26
Fluctuation ratio: +0.42%
Traded volume:     473600
Traded price:      4557938

Curr date is 20160714
Last traded price: 2008.77
Fluctuation ratio: +0.16%
Traded volume:     334351
Traded price:      4208693

Curr date is 20160713
Last traded price: 2005.55
Fluctuation ratio: +0.72%
Traded volume:     353365
Traded price:      4655778

Curr date is 20160712
Last traded price: 1991.23
Fluctuation ratio: +0.14%
Traded volume:     427454
Traded price:      4404322

Curr date is 20160711
Last traded price: 1988.54
Fluctuation ratio: +1.30%
Traded volume:     332552
Traded price:      4239228

Curr date is 20160708
Last traded price: 1963.10
Fluctuation ratio: -0.56%
Traded volume:     345926
Traded price:      4066529

Curr date is 20160707
Last traded price: 1974.08
Fluctuation ratio: +1.07%
Traded volume:     374574
Traded price:      3866686

Curr date is 20160706
Last traded price: 1953.12
Fluctuation ratio: -1.85%
Traded volume:     451690
Traded price:      4683910

Curr date is 20160705
Last traded price: 1989.85
Fluctuation ratio: -0.27%
Traded volume:     398730
Traded price:      3872453

Curr date is 20160704
Last traded price: 1995.30
Fluctuation ratio: +0.40%
Traded volume:     462342
Traded price:      4047771

Curr date is 20160701
Last traded price: 1987.32
Fluctuation ratio: +0.86%
Traded volume:     442076
Traded price:      4280276

Curr date is 20160630
Last traded price: 1970.35
Fluctuation ratio: +0.72%
Traded volume:     349862
Traded price:      5326567

Curr date is 20160629
Last traded price: 1956.36
Fluctuation ratio: +1.04%
Traded volume:     446686
Traded price:      4757342

Curr date is 20160628
Last traded price: 1936.22
Fluctuation ratio: +0.49%
Traded volume:     368239
Traded price:      4360447

Curr date is 20160627
Last traded price: 1926.85
Fluctuation ratio: +0.08%
Traded volume:     389617
Traded price:      5095563

Curr date is 20160624
Last traded price: 1925.24
Fluctuation ratio: -3.09%
Traded volume:     726661
Traded price:      8541520

Curr date is 20160623
Last traded price: 1986.71
Fluctuation ratio: -0.29%
Traded volume:     449586
Traded price:      4155747

Curr date is 20160622
Last traded price: 1992.58
Fluctuation ratio: +0.50%
Traded volume:     401930
Traded price:      3945907

Curr date is 20160621
Last traded price: 1982.70
Fluctuation ratio: +0.08%
Traded volume:     548571
Traded price:      4426426

Curr date is 20160620
Last traded price: 1981.12
Fluctuation ratio: +1.42%
Traded volume:     385489
Traded price:      3908118

Curr date is 20160617
Last traded price: 1953.40
Fluctuation ratio: +0.07%
Traded volume:     478811
Traded price:      4420744

Curr date is 20160616
Last traded price: 1951.99
Fluctuation ratio: -0.86%
Traded volume:     432990
Traded price:      4386606

Curr date is 20160615
Last traded price: 1968.83
Fluctuation ratio: -0.16%
Traded volume:     371503
Traded price:      4491931

Curr date is 20160614
Last traded price: 1972.03
Fluctuation ratio: -0.36%
Traded volume:     434390
Traded price:      4919384

Curr date is 20160613
Last traded price: 1979.06
Fluctuation ratio: -1.91%
Traded volume:     437223
Traded price:      4530726

Curr date is 20160610
Last traded price: 2017.63
Fluctuation ratio: -0.32%
Traded volume:     399304
Traded price:      4711178

Curr date is 20160609
Last traded price: 2024.17
Fluctuation ratio: -0.14%
Traded volume:     591484
Traded price:      7585446

Curr date is 20160608
Last traded price: 2027.08
Fluctuation ratio: +0.77%
Traded volume:     490074
Traded price:      5705455

Curr date is 20160607
Last traded price: 2011.63
Fluctuation ratio: +1.30%
Traded volume:     472781
Traded price:      5459279

Curr date is 20160603
Last traded price: 1985.84
Fluctuation ratio: +0.04%
Traded volume:     514910
Traded price:      5150261

Curr date is 20160602
Last traded price: 1985.11
Fluctuation ratio: +0.12%
Traded volume:     461076
Traded price:      5143907

Curr date is 20160601
Last traded price: 1982.72
Fluctuation ratio: -0.03%
Traded volume:     496335
Traded price:      5314023

Curr date is 20160531
Last traded price: 1983.40
Fluctuation ratio: +0.83%
Traded volume:     647543
Traded price:      8425308

Curr date is 20160530
Last traded price: 1967.13
Fluctuation ratio: -0.10%
Traded volume:     541202
Traded price:      4532734

Curr date is 20160527
Last traded price: 1969.17
Fluctuation ratio: +0.62%
Traded volume:     517989
Traded price:      4814077

Curr date is 20160526
Last traded price: 1957.06
Fluctuation ratio: -0.18%
Traded volume:     551033
Traded price:      4991688

Curr date is 20160525
Last traded price: 1960.51
Fluctuation ratio: +1.18%
Traded volume:     650749
Traded price:      5410461

Curr date is 20160524
Last traded price: 1937.68
Fluctuation ratio: -0.90%
Traded volume:     511809
Traded price:      4905045

Curr date is 20160523
Last traded price: 1955.25
Fluctuation ratio: +0.39%
Traded volume:     393845
Traded price:      4011176

Curr date is 20160520
Last traded price: 1947.67
Fluctuation ratio: +0.05%
Traded volume:     383159
Traded price:      4399090

Curr date is 20160519
Last traded price: 1946.78
Fluctuation ratio: -0.51%
Traded volume:     500755
Traded price:      5225527

Curr date is 20160518
Last traded price: 1956.73
Fluctuation ratio: -0.58%
Traded volume:     688631
Traded price:      6511596

Curr date is 20160517
Last traded price: 1968.06
Fluctuation ratio: +0.01%
Traded volume:     590808
Traded price:      5414916

Curr date is 20160516
Last traded price: 1967.91
Fluctuation ratio: +0.05%
Traded volume:     520295
Traded price:      4797446

Curr date is 20160513
Last traded price: 1966.99
Fluctuation ratio: -0.53%
Traded volume:     500776
Traded price:      4495599

Curr date is 20160512
Last traded price: 1977.49
Fluctuation ratio: -0.13%
Traded volume:     445986
Traded price:      4038195

Curr date is 20160511
Last traded price: 1980.10
Fluctuation ratio: -0.12%
Traded volume:     393495
Traded price:      4363815

Curr date is 20160510
Last traded price: 1982.50
Fluctuation ratio: +0.75%
Traded volume:     364980
Traded price:      4773150

Curr date is 20160509
Last traded price: 1967.81
Fluctuation ratio: -0.45%
Traded volume:     338214
Traded price:      5179317

Curr date is 20160504
Last traded price: 1976.71
Fluctuation ratio: -0.49%
Traded volume:     348731
Traded price:      4926327

Curr date is 20160503
Last traded price: 1986.41
Fluctuation ratio: +0.42%
Traded volume:     306496
Traded price:      3729473

Curr date is 20160502
Last traded price: 1978.15
Fluctuation ratio: -0.80%
Traded volume:     324975
Traded price:      3849348

Curr date is 20160429
Last traded price: 1994.15
Fluctuation ratio: -0.34%
Traded volume:     393295
Traded price:      4899464

Curr date is 20160428
Last traded price: 2000.93
Fluctuation ratio: -0.72%
Traded volume:     336073
Traded price:      5240945

Curr date is 20160427
Last traded price: 2015.40
Fluctuation ratio: -0.21%
Traded volume:     407874
Traded price:      5312008

Curr date is 20160426
Last traded price: 2019.63
Fluctuation ratio: +0.25%
Traded volume:     502391
Traded price:      5110466

Curr date is 20160425
Last traded price: 2014.55
Fluctuation ratio: -0.05%
Traded volume:     392813
Traded price:      4310191

Curr date is 20160422
Last traded price: 2015.49
Fluctuation ratio: -0.33%
Traded volume:     475058
Traded price:      4149096

Curr date is 20160421
Last traded price: 2022.10
Fluctuation ratio: +0.81%
Traded volume:     387844
Traded price:      4714212

Curr date is 20160420
Last traded price: 2005.83
Fluctuation ratio: -0.27%
Traded volume:     419041
Traded price:      4528325

Curr date is 20160419
Last traded price: 2011.36
Fluctuation ratio: +0.11%
Traded volume:     397413
Traded price:      4392297

Curr date is 20160418
Last traded price: 2009.10
Fluctuation ratio: -0.28%
Traded volume:     334757
Traded price:      4247470

Curr date is 20160415
Last traded price: 2014.71
Fluctuation ratio: -0.06%
Traded volume:     313110
Traded price:      4428494

Curr date is 20160414
Last traded price: 2015.93
Fluctuation ratio: +1.75%
Traded volume:     456829
Traded price:      6285943

Curr date is 20160412
Last traded price: 1981.32
Fluctuation ratio: +0.56%
Traded volume:     372146
Traded price:      3861385

Curr date is 20160411
Last traded price: 1970.37
Fluctuation ratio: -0.09%
Traded volume:     370220
Traded price:      3801200

Curr date is 20160408
Last traded price: 1972.05
Fluctuation ratio: -0.09%
Traded volume:     394571
Traded price:      4332858

Curr date is 20160407
Last traded price: 1973.89
Fluctuation ratio: +0.13%
Traded volume:     427063
Traded price:      4578002

Curr date is 20160406
Last traded price: 1971.32
Fluctuation ratio: +0.44%
Traded volume:     318532
Traded price:      4299791

Curr date is 20160405
Last traded price: 1962.74
Fluctuation ratio: -0.82%
Traded volume:     359996
Traded price:      3992300

Curr date is 20160404
Last traded price: 1978.97
Fluctuation ratio: +0.27%
Traded volume:     359061
Traded price:      4192246

Curr date is 20160401
Last traded price: 1973.57
Fluctuation ratio: -1.12%
Traded volume:     378202
Traded price:      4777024

Curr date is 20160331
Last traded price: 1995.85
Fluctuation ratio: -0.31%
Traded volume:     322879
Traded price:      4840902

Curr date is 20160330
Last traded price: 2002.14
Fluctuation ratio: +0.36%
Traded volume:     347263
Traded price:      4517708

Curr date is 20160329
Last traded price: 1994.91
Fluctuation ratio: +0.62%
Traded volume:     377908
Traded price:      3991750

Curr date is 20160328
Last traded price: 1982.54
Fluctuation ratio: -0.06%
Traded volume:     405980
Traded price:      3365429

Curr date is 20160325
Last traded price: 1983.81
Fluctuation ratio: -0.11%
Traded volume:     457306
Traded price:      3751912

Curr date is 20160324
Last traded price: 1985.97
Fluctuation ratio: -0.46%
Traded volume:     336185
Traded price:      3777427

Curr date is 20160323
Last traded price: 1995.12
Fluctuation ratio: -0.08%
Traded volume:     363163
Traded price:      3929377

Curr date is 20160322
Last traded price: 1996.81
Fluctuation ratio: +0.35%
Traded volume:     379381
Traded price:      4416765

Curr date is 20160321
Last traded price: 1989.76
Fluctuation ratio: -0.12%
Traded volume:     320666
Traded price:      4012257

Curr date is 20160318
Last traded price: 1992.12
Fluctuation ratio: +0.21%
Traded volume:     380108
Traded price:      4659018

Curr date is 20160317
Last traded price: 1987.99
Fluctuation ratio: +0.66%
Traded volume:     282237
Traded price:      4668378

Curr date is 20160316
Last traded price: 1974.90
Fluctuation ratio: +0.25%
Traded volume:     289945
Traded price:      4055964

Curr date is 20160315
Last traded price: 1969.97
Fluctuation ratio: -0.12%
Traded volume:     260916
Traded price:      3764672

Curr date is 20160314
Last traded price: 1972.27
Fluctuation ratio: +0.04%
Traded volume:     353027
Traded price:      4167785

Curr date is 20160311
Last traded price: 1971.41
Fluctuation ratio: +0.11%
Traded volume:     299293
Traded price:      4116595

Curr date is 20160310
Last traded price: 1969.33
Fluctuation ratio: +0.84%
Traded volume:     346406
Traded price:      5055951

Curr date is 20160309
Last traded price: 1952.95
Fluctuation ratio: +0.35%
Traded volume:     345920
Traded price:      4212533

Curr date is 20160308
Last traded price: 1946.12
Fluctuation ratio: -0.60%
Traded volume:     354037
Traded price:      4844001

Curr date is 20160307
Last traded price: 1957.87
Fluctuation ratio: +0.11%
Traded volume:     340260
Traded price:      4611978

Curr date is 20160304
Last traded price: 1955.63
Fluctuation ratio: -0.13%
Traded volume:     312175
Traded price:      4491198

Curr date is 20160303
Last traded price: 1958.17
Fluctuation ratio: +0.55%
Traded volume:     417546
Traded price:      4903735

Curr date is 20160302
Last traded price: 1947.42
Fluctuation ratio: +1.60%
Traded volume:     316865
Traded price:      5110434

Curr date is 20160229
Last traded price: 1916.66
Fluctuation ratio: -0.18%
Traded volume:     271547
Traded price:      4534806

Curr date is 20160226
Last traded price: 1920.16
Fluctuation ratio: +0.08%
Traded volume:     268811
Traded price:      3964062

Curr date is 20160225
Last traded price: 1918.57
Fluctuation ratio: +0.32%
Traded volume:     297760
Traded price:      3881831

Curr date is 20160224
Last traded price: 1912.53
Fluctuation ratio: -0.09%
Traded volume:     277072
Traded price:      3516031

Curr date is 20160223
Last traded price: 1914.22
Fluctuation ratio: -0.11%
Traded volume:     323952
Traded price:      3948979

Curr date is 20160222
Last traded price: 1916.36
Fluctuation ratio: +0.01%
Traded volume:     261987
Traded price:      3404998

Curr date is 20160219
Last traded price: 1916.24
Fluctuation ratio: +0.39%
Traded volume:     307221
Traded price:      3825333

Curr date is 20160218
Last traded price: 1908.84
Fluctuation ratio: +1.32%
Traded volume:     327418
Traded price:      4646452

Curr date is 20160217
Last traded price: 1883.94
Fluctuation ratio: -0.23%
Traded volume:     333899
Traded price:      5061065

Curr date is 20160216
Last traded price: 1888.30
Fluctuation ratio: +1.40%
Traded volume:     381620
Traded price:      4196969

Curr date is 20160215
Last traded price: 1862.20
Fluctuation ratio: +1.47%
Traded volume:     281431
Traded price:      4413358

Curr date is 20160212
Last traded price: 1835.28
Fluctuation ratio: -1.41%
Traded volume:     465667
Traded price:      6236294

Curr date is 20160211
Last traded price: 1861.54
Fluctuation ratio: -2.93%
Traded volume:     381071
Traded price:      4635376

Curr date is 20160205
Last traded price: 1917.79
Fluctuation ratio: +0.08%
Traded volume:     290560
Traded price:      4245650

Curr date is 20160204
Last traded price: 1916.26
Fluctuation ratio: +1.35%
Traded volume:     358802
Traded price:      5131794

Curr date is 20160203
Last traded price: 1890.67
Fluctuation ratio: -0.84%
Traded volume:     403016
Traded price:      4739686

Curr date is 20160202
Last traded price: 1906.60
Fluctuation ratio: -0.95%
Traded volume:     407067
Traded price:      4552972

Curr date is 20160201
Last traded price: 1924.82
Fluctuation ratio: +0.67%
Traded volume:     435759
Traded price:      5062947

Curr date is 20160129
Last traded price: 1912.06
Fluctuation ratio: +0.27%
Traded volume:     379159
Traded price:      5966488

Curr date is 20160128
Last traded price: 1906.94
Fluctuation ratio: +0.48%
Traded volume:     306801
Traded price:      4609354

Curr date is 20160127
Last traded price: 1897.87
Fluctuation ratio: +1.40%
Traded volume:     345542
Traded price:      4999182

Curr date is 20160126
Last traded price: 1871.69
Fluctuation ratio: -1.15%
Traded volume:     295266
Traded price:      4409881

Curr date is 20160125
Last traded price: 1893.43
Fluctuation ratio: +0.74%
Traded volume:     311413
Traded price:      4004975

Curr date is 20160122
Last traded price: 1879.43
Fluctuation ratio: +2.11%
Traded volume:     400293
Traded price:      4344515

Curr date is 20160121
Last traded price: 1840.53
Fluctuation ratio: -0.27%
Traded volume:     424485
Traded price:      4729614

Curr date is 20160120
Last traded price: 1845.45
Fluctuation ratio: -2.34%
Traded volume:     400261
Traded price:      5240327

Curr date is 20160119
Last traded price: 1889.64
Fluctuation ratio: +0.60%
Traded volume:     329977
Traded price:      4441550

Curr date is 20160118
Last traded price: 1878.45
Fluctuation ratio: -0.02%
Traded volume:     273261
Traded price:      4056222

Curr date is 20160115
Last traded price: 1878.87
Fluctuation ratio: -1.11%
Traded volume:     303991
Traded price:      4391132

Curr date is 20160114
Last traded price: 1900.01
Fluctuation ratio: -0.85%
Traded volume:     305931
Traded price:      4264454

Curr date is 20160113
Last traded price: 1916.28
Fluctuation ratio: +1.34%
Traded volume:     261810
Traded price:      3882822

Curr date is 20160112
Last traded price: 1890.86
Fluctuation ratio: -0.21%
Traded volume:     290808
Traded price:      3787415

Curr date is 20160111
Last traded price: 1894.84
Fluctuation ratio: -1.19%
Traded volume:     319556
Traded price:      4145526

Curr date is 20160108
Last traded price: 1917.62
Fluctuation ratio: +0.70%
Traded volume:     400556
Traded price:      4995379

Curr date is 20160107
Last traded price: 1904.33
Fluctuation ratio: -1.10%
Traded volume:     388136
Traded price:      4907247

Curr date is 20160106
Last traded price: 1925.43
Fluctuation ratio: -0.26%
Traded volume:     585978
Traded price:      5917977

Curr date is 20160105
Last traded price: 1930.53
Fluctuation ratio: +0.61%
Traded volume:     440914
Traded price:      4097962

Curr date is 20160104
Last traded price: 1918.76
Fluctuation ratio: -2.17%
Traded volume:     355001
Traded price:      3917340

Curr date is 20151230
Last traded price: 1961.31
Fluctuation ratio: -0.25%
Traded volume:     300574
Traded price:      3670486

Curr date is 20151229
Last traded price: 1966.31
Fluctuation ratio: +0.11%
Traded volume:     395493
Traded price:      3757607

Curr date is 20151228
Last traded price: 1964.06
Fluctuation ratio: -1.34%
Traded volume:     389692
Traded price:      3753973

Curr date is 20151224
Last traded price: 1990.65
Fluctuation ratio: -0.43%
Traded volume:     497593
Traded price:      3551535

Curr date is 20151223
Last traded price: 1999.22
Fluctuation ratio: +0.33%
Traded volume:     487032
Traded price:      3918294

Curr date is 20151222
Last traded price: 1992.56
Fluctuation ratio: +0.57%
Traded volume:     569183
Traded price:      4119722

Curr date is 20151221
Last traded price: 1981.19
Fluctuation ratio: +0.30%
Traded volume:     532535
Traded price:      3534909

Curr date is 20151218
Last traded price: 1975.32
Fluctuation ratio: -0.13%
Traded volume:     665731
Traded price:      4021859

Curr date is 20151217
Last traded price: 1977.96
Fluctuation ratio: +0.43%
Traded volume:     374572
Traded price:      3850731

Curr date is 20151216
Last traded price: 1969.40
Fluctuation ratio: +1.88%
Traded volume:     467637
Traded price:      4207020

Curr date is 20151215
Last traded price: 1932.97
Fluctuation ratio: +0.27%
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Traded price:      3593520

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Last traded price: 1848.41
Fluctuation ratio: +3.09%
Traded volume:     509547
Traded price:      4887915

Curr date is 20111220
Last traded price: 1793.06
Fluctuation ratio: +0.91%
Traded volume:     385665
Traded price:      3913314

Curr date is 20111219
Last traded price: 1776.93
Fluctuation ratio: -3.43%
Traded volume:     676680
Traded price:      6581501

Curr date is 20111216
Last traded price: 1839.96
Fluctuation ratio: +1.15%
Traded volume:     484186
Traded price:      4292758

Curr date is 20111215
Last traded price: 1819.11
Fluctuation ratio: -2.08%
Traded volume:     403326
Traded price:      5319597

Curr date is 20111214
Last traded price: 1857.75
Fluctuation ratio: -0.34%
Traded volume:     397193
Traded price:      4355636

Curr date is 20111213
Last traded price: 1864.06
Fluctuation ratio: -1.88%
Traded volume:     444585
Traded price:      5210178

Curr date is 20111212
Last traded price: 1899.76
Fluctuation ratio: +1.33%
Traded volume:     405097
Traded price:      5303702

Curr date is 20111209
Last traded price: 1874.75
Fluctuation ratio: -1.97%
Traded volume:     367333
Traded price:      5025076

Curr date is 20111208
Last traded price: 1912.39
Fluctuation ratio: -0.37%
Traded volume:     420434
Traded price:      5849587

Curr date is 20111207
Last traded price: 1919.42
Fluctuation ratio: +0.87%
Traded volume:     396686
Traded price:      5691433

Curr date is 20111206
Last traded price: 1902.82
Fluctuation ratio: -1.04%
Traded volume:     379676
Traded price:      4562619

Curr date is 20111205
Last traded price: 1922.90
Fluctuation ratio: +0.36%
Traded volume:     325509
Traded price:      4094778

Curr date is 20111202
Last traded price: 1916.04
Fluctuation ratio: -0.01%
Traded volume:     380509
Traded price:      5303675

Curr date is 20111201
Last traded price: 1916.18
Fluctuation ratio: +3.72%
Traded volume:     495785
Traded price:      9232409

Curr date is 20111130
Last traded price: 1847.51
Fluctuation ratio: -0.49%
Traded volume:     327558
Traded price:      5994526

Curr date is 20111129
Last traded price: 1856.52
Fluctuation ratio: +2.27%
Traded volume:     324289
Traded price:      6119167

Curr date is 20111128
Last traded price: 1815.28
Fluctuation ratio: +2.19%
Traded volume:     272246
Traded price:      4195427

Curr date is 20111125
Last traded price: 1776.40
Fluctuation ratio: -1.04%
Traded volume:     301196
Traded price:      4158716

Curr date is 20111124
Last traded price: 1795.06
Fluctuation ratio: +0.67%
Traded volume:     275641
Traded price:      4080949

Curr date is 20111123
Last traded price: 1783.10
Fluctuation ratio: -2.36%
Traded volume:     406817
Traded price:      4592353

Curr date is 20111122
Last traded price: 1826.28
Fluctuation ratio: +0.34%
Traded volume:     261447
Traded price:      3818063

Curr date is 20111121
Last traded price: 1820.03
Fluctuation ratio: -1.04%
Traded volume:     296574
Traded price:      3925704

Curr date is 20111118
Last traded price: 1839.17
Fluctuation ratio: -2.00%
Traded volume:     327940
Traded price:      4712681

Curr date is 20111117
Last traded price: 1876.67
Fluctuation ratio: +1.11%
Traded volume:     348733
Traded price:      4666947

Curr date is 20111116
Last traded price: 1856.07
Fluctuation ratio: -1.59%
Traded volume:     402001
Traded price:      5579052

Curr date is 20111115
Last traded price: 1886.12
Fluctuation ratio: -0.88%
Traded volume:     355841
Traded price:      4738345

Curr date is 20111114
Last traded price: 1902.81
Fluctuation ratio: +2.11%
Traded volume:     323066
Traded price:      5185948

Curr date is 20111111
Last traded price: 1863.45
Fluctuation ratio: +2.77%
Traded volume:     291710
Traded price:      5147866

Curr date is 20111110
Last traded price: 1813.25
Fluctuation ratio: -4.94%
Traded volume:     391746
Traded price:      7677643

Curr date is 20111109
Last traded price: 1907.53
Fluctuation ratio: +0.23%
Traded volume:     414346
Traded price:      5474561

Curr date is 20111108
Last traded price: 1903.14
Fluctuation ratio: -0.83%
Traded volume:     398620
Traded price:      5156384

Curr date is 20111107
Last traded price: 1919.10
Fluctuation ratio: -0.48%
Traded volume:     342958
Traded price:      5071524

Curr date is 20111104
Last traded price: 1928.41
Fluctuation ratio: +3.13%
Traded volume:     461468
Traded price:      7089736

Curr date is 20111103
Last traded price: 1869.96
Fluctuation ratio: -1.48%
Traded volume:     427533
Traded price:      6206253

Curr date is 20111102
Last traded price: 1898.01
Fluctuation ratio: -0.61%
Traded volume:     383783
Traded price:      6639959

Curr date is 20111101
Last traded price: 1909.63
Fluctuation ratio: +0.03%
Traded volume:     348709
Traded price:      6196173

Curr date is 20111031
Last traded price: 1909.03
Fluctuation ratio: -1.06%
Traded volume:     387011
Traded price:      6255819

Curr date is 20111028
Last traded price: 1929.48
Fluctuation ratio: +0.39%
Traded volume:     504187
Traded price:      10022898

Curr date is 20111027
Last traded price: 1922.04
Fluctuation ratio: +1.46%
Traded volume:     410379
Traded price:      7817092

Curr date is 20111026
Last traded price: 1894.31
Fluctuation ratio: +0.30%
Traded volume:     379027
Traded price:      5489842

Curr date is 20111025
Last traded price: 1888.65
Fluctuation ratio: -0.51%
Traded volume:     348599
Traded price:      5969582

Curr date is 20111024
Last traded price: 1898.32
Fluctuation ratio: +3.26%
Traded volume:     369269
Traded price:      6664124

Curr date is 20111021
Last traded price: 1838.38
Fluctuation ratio: +1.84%
Traded volume:     350266
Traded price:      6355680

Curr date is 20111020
Last traded price: 1805.09
Fluctuation ratio: -2.74%
Traded volume:     341616
Traded price:      6680274

Curr date is 20111019
Last traded price: 1855.92
Fluctuation ratio: +0.93%
Traded volume:     336112
Traded price:      5695649

Curr date is 20111018
Last traded price: 1838.90
Fluctuation ratio: -1.41%
Traded volume:     313747
Traded price:      5659423

Curr date is 20111017
Last traded price: 1865.18
Fluctuation ratio: +1.62%
Traded volume:     363287
Traded price:      5842287

Curr date is 20111014
Last traded price: 1835.40
Fluctuation ratio: +0.67%
Traded volume:     344596
Traded price:      4990769

Curr date is 20111013
Last traded price: 1823.10
Fluctuation ratio: +0.75%
Traded volume:     425444
Traded price:      6529655

Curr date is 20111012
Last traded price: 1809.50
Fluctuation ratio: +0.81%
Traded volume:     346648
Traded price:      5591456

Curr date is 20111011
Last traded price: 1795.02
Fluctuation ratio: +1.62%
Traded volume:     394217
Traded price:      7030870

Curr date is 20111010
Last traded price: 1766.44
Fluctuation ratio: +0.38%
Traded volume:     271702
Traded price:      4968059

Curr date is 20111007
Last traded price: 1759.77
Fluctuation ratio: +2.89%
Traded volume:     329710
Traded price:      7442564

Curr date is 20111006
Last traded price: 1710.32
Fluctuation ratio: +2.63%
Traded volume:     347674
Traded price:      7770663

Curr date is 20111005
Last traded price: 1666.52
Fluctuation ratio: -2.33%
Traded volume:     330973
Traded price:      7560971

Curr date is 20111004
Last traded price: 1706.19
Fluctuation ratio: -3.59%
Traded volume:     296709
Traded price:      6599426

Curr date is 20110930
Last traded price: 1769.65
Fluctuation ratio: +0.02%
Traded volume:     322160
Traded price:      6149813

Curr date is 20110929
Last traded price: 1769.29
Fluctuation ratio: +2.68%
Traded volume:     369425
Traded price:      6594996

Curr date is 20110928
Last traded price: 1723.09
Fluctuation ratio: -0.73%
Traded volume:     339547
Traded price:      6248654

Curr date is 20110927
Last traded price: 1735.71
Fluctuation ratio: +5.02%
Traded volume:     334476
Traded price:      6098523

Curr date is 20110926
Last traded price: 1652.71
Fluctuation ratio: -2.64%
Traded volume:     419143
Traded price:      7283338

Curr date is 20110923
Last traded price: 1697.44
Fluctuation ratio: -5.73%
Traded volume:     407148
Traded price:      7442827

Curr date is 20110922
Last traded price: 1800.55
Fluctuation ratio: -2.90%
Traded volume:     291142
Traded price:      5705571

Curr date is 20110921
Last traded price: 1854.28
Fluctuation ratio: +0.89%
Traded volume:     293377
Traded price:      5877761

Curr date is 20110920
Last traded price: 1837.97
Fluctuation ratio: +0.94%
Traded volume:     317144
Traded price:      5461918

Curr date is 20110919
Last traded price: 1820.94
Fluctuation ratio: -1.04%
Traded volume:     331500
Traded price:      4916366

Curr date is 20110916
Last traded price: 1840.10
Fluctuation ratio: +3.72%
Traded volume:     423993
Traded price:      7510863

In [3]:

    

plt.figure(1, figsize=(14, 7))
n = len(last_trade_prices)
x = range(n)
step = int(n/20)
xtick_input = x[0:n:step]
xtick_input.append(x[-1])
xtick_str = date_strs[0:n:step]
xtick_str.append(date_strs[-1])
plt.xticks(xtick_input, xtick_str, fontsize=20
           , rotation='vertical')
plt.plot(x, last_trade_prices, "-")
plt.title("KOSPI")


    

    
Out[3]:





<matplotlib.text.Text at 0x7f02aadc3350>






    

In [4]:

    

def kernel_se(X1, X2, g2, l2, w2):
    n1 = X1.shape[0]
    n2 = X2.shape[0]
    K  = np.zeros((n1, n2))
    for i in range(n1):
        for j in range(n2):
            x1 = X1[i, :]
            x2 = X2[j, :]
            d  = x1 - x2
            K[i, j] = g2*np.exp(-d*d/(l2))
            if n1 > 1 and i == j:
                K[i, j] = K[i, j] + w2
    return K
print ("Kernel function defined")


    

    




Kernel function defined

In [39]:

    

xdata = np.array(x).reshape(-1, len(x)).T
ydata = np.array(last_trade_prices).reshape(-1, len(last_trade_prices)).T
ydata_mz = ydata - np.mean(ydata)
xtest = xtest = np.array([np.linspace(0, 1200, 3000)]).T
g2    = 1
l2    = 30
w2    = 1e-1
Kdata = kernel_se(xdata, xdata, g2, l2, w2)
alpha = np.matmul(np.linalg.inv(Kdata), ydata_mz)
Ktest = kernel_se(xtest, xdata, g2, l2, w2)
ytest = np.matmul(Ktest, alpha) + np.mean(ydata)
print ("GPR ready")

# Plot 
plt.figure(1, figsize=(15, 8))
plt.plot(xdata[:, 0], ydata[:, 0], 'r-', label='Original data')
plt.plot(xtest[:, 0], ytest[:, 0], 'b-', label='GPR')
plt.legend()


    

    




GPR ready






    
Out[39]:





<matplotlib.legend.Legend at 0x7f02a8a7c850>






    

In [43]:

    

import pandas