Playing with amazon ec2 spot instance pricing, ipython notebook, and matplotlib

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Untitled1.py

# coding: utf-8

# In[23]:

get_ipython().magic('pylab')
import boto.ec2
from pandas import DataFrame
pre_data = {}
for region in boto.ec2.regions():
    if not region.name.startswith('cn') and not 'gov' in region.name:
        pre_data[region.name] = region.connect().get_spot_price_history(instance_type='t1.micro')


from collections import defaultdict
data = defaultdict(lambda :[])
for price_history in pre_data.values():
    for price in price_history:
        data[price.availability_zone].append(price)
    



# In[24]:

tableau20 = [(31, 119, 180), (174, 199, 232), (255, 127, 14), (255, 187, 120),  
             (44, 160, 44), (152, 223, 138), (214, 39, 40), (255, 152, 150),  
             (148, 103, 189), (197, 176, 213), (140, 86, 75), (196, 156, 148),  
             (227, 119, 194), (247, 182, 210), (127, 127, 127), (199, 199, 199),  
             (188, 189, 34), (219, 219, 141), (23, 190, 207), (158, 218, 229)]  

for i in range(len(tableau20)):  
    r, g, b = tableau20[i]  
    tableau20[i] = (r / 255., g / 255., b / 255.)  

def from_utc(utcTime,fmt="%Y-%m-%dT%H:%M:%S.%fZ"):
    """
    Convert UTC time string to time.struct_time
    """
    # change datetime.datetime to time, return time.struct_time type
    return datetime.datetime.strptime(utcTime, fmt)


# In[24]:




# In[33]:

def make_figure():
    yuk = list(data.items())
    figure(figsize=(12, 14))  
    for rank, (k,v) in enumerate(yuk):
        print(k)
        clf()
        ax = subplot(111)  
        ax.spines["top"].set_visible(False)  
        ax.spines["bottom"].set_visible(False)  
        ax.spines["right"].set_visible(False)  
        ax.spines["left"].set_visible(False)  
        ax.get_xaxis().tick_bottom()  
        ax.get_yaxis().tick_left()  
        ylim(0,0.03)
        j = [(from_utc(t.timestamp), t.price) for t in v]
        j.sort()
        x, y = [i[0] for i in j], [i[1] for i in j]
        plot(x,y, lw=0.5, color=tableau20[rank % 20])
        text(x[-1],0.02,k, fontsize=17, ha="center")
        savefig("%s-%s.png" % (k,str(x[-1])), bbox_inches="tight");
    


# In[34]:

make_figure()


# In[ ]:

us-east-1a-2014-11-11 02:30:25.png

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