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import numpy as np | |
import base64 | |
import urllib | |
from PIL import Image | |
#Convert image to base64 thumbnail | |
def img2base64(img_link): | |
with open("/tmp/img_file.jpg", "wb") as f: | |
f.write(urllib.request.urlopen(img_link).read()) | |
tmp_img = np.asarray(Image.open("/tmp/img_file.jpg")) |
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import string | |
from itertools import cycle | |
from six.moves import zip | |
def label_axes(fig, labels=None, loc=None, **kwargs): | |
""" | |
Walks through axes and labels each. | |
kwargs are collected and passed to `annotate` |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |