| '''Compares the time to scan through a large tar.gz file when it is memory mapped vs when it isn't | |
| In this example train_0.tar.gz is a 46 GB tar.gz file that decompresses to 47 GB. In other words its a file that | |
| hasn't compressed much, in this case because it contains a bunch of already compressed files. | |
| $ python3 ./mmap_test.py | |
| seconds to execute w/o mmap: 134.61383328400552 | |
| seconds to execute mmpa: 43.660543900041375 | |
| ''' |
| $ python | |
| Python 3.5.2 (default, Jun 28 2016, 08:46:01) | |
| [GCC 6.1.1 20160602] on linux | |
| Type "help", "copyright", "credits" or "license" for more information. | |
| >>> a = [[0,0],[0,0]] | |
| >>> c = (1,1) | |
| >>> a[c[0]][c[1]] = 100 | |
| >>> a | |
| [[0, 0], [0, 100]] | |
| >>> a = [[None]*2]*2 |
| html> | |
| <body> | |
| <script type="text/javascript"> | |
| var urls = [ | |
| "https://duckduckgo.com", | |
| "https://bing.com", | |
| ] |
| html> | |
| <body> | |
| <script type="text/javascript"> | |
| var urls = [ | |
| "https://duckduckgo.com", | |
| "https://bing.com", | |
| ] |
Computation Graph:
Instantiating Variable objects as well as Ops objects adds to a graph of computation that is tracked by tf.
After building your computation graph, where nodes are Variables or Ops or Constants, you can retrieve the executed and resulting value of any of the nodes in the graph.
The difference between Ops and Variables:
| import argparse | |
| import tensorflow as tf | |
| import sys | |
| def flowfib(n): | |
| ''' f_n = f_n-1 + f_n-2 | |
| Fails in a somewhat interesting way, showing that ints passed to constants are cast to 32 bit signed ints, | |
| causing overflow pretty early in fibonacci sequence. | |
| import os | |
| import pandas | |
| def main(): | |
| data_directory = './replay-correction' | |
| output_fname = './icon_code_count.csv' | |
| dates = [] | |
| codes = [] |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>dedicated pixel test</title> | |
| <script type="text/javascript" src="//cpadna1.com/p.ashx?o=1246&f=js&t=1"></script> | |
| </head> | |
| <body> | |
| use developer tools to check out network activity. | |
| </body> | |
| </html> |
| <head> | |
| <script src="http://code.jquery.com/jquery-1.7.2.js"></script> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var hostProtocol = (("https:" == document.location.protocol) ? "https" : "http"); | |
| $.getScript( | |
| hostProtocol+'://5003.xg4ken.com/media/getpx.php?cid=XXXXXX', | |
| function(){ | |
| console.log("about to log request after initial dom rendering, not on initial dom render."); |
| import argparse | |
| import codecs | |
| import json | |
| import os.path | |
| import requests | |
| import sys | |
| import sqlite3 | |
| import time | |
| import traceback |