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fix plot_stock_market.py to work on python2.7 and numpy1.6 #9181

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Jun 27, 2017
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fix plot_stock_market.py to work on python2.7 and numpy1.6 #9181

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23 changes: 12 additions & 11 deletions examples/applications/plot_stock_market.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,7 @@
# #############################################################################
# Retrieve the data from Internet


def quotes_historical_google(symbol, date1, date2):
"""Get the historical data from Google finance.

Expand All @@ -102,15 +103,15 @@ def quotes_historical_google(symbol, date1, date2):
'output': 'csv'
})
url = 'http://www.google.com/finance/historical?' + params
with urlopen(url) as response:
dtype = {
'names': ['date', 'open', 'high', 'low', 'close', 'volume'],
'formats': ['object', 'f4', 'f4', 'f4', 'f4', 'f4']
}
converters = {0: lambda s: datetime.strptime(s.decode(), '%d-%b-%y')}
return np.genfromtxt(response, delimiter=',', skip_header=1,
dtype=dtype, converters=converters,
missing_values='-', filling_values=-1)
response = urlopen(url)
dtype = {
'names': ['date', 'open', 'high', 'low', 'close', 'volume'],
'formats': ['object', 'f4', 'f4', 'f4', 'f4', 'f4']
}
converters = {0: lambda s: datetime.strptime(s.decode(), '%d-%b-%y')}
return np.genfromtxt(response, delimiter=',', skip_header=1,
dtype=dtype, converters=converters,
missing_values='-', filling_values=-1)


# Choose a time period reasonably calm (not too long ago so that we get
Expand Down Expand Up @@ -182,8 +183,8 @@ def quotes_historical_google(symbol, date1, date2):
quotes_historical_google(symbol, d1, d2) for symbol in symbols
]

close_prices = np.stack([q['close'] for q in quotes])
open_prices = np.stack([q['open'] for q in quotes])
close_prices = np.vstack([q['close'] for q in quotes])
open_prices = np.vstack([q['open'] for q in quotes])

# The daily variations of the quotes are what carry most information
variation = close_prices - open_prices
Expand Down