From: Neil Smith Date: Tue, 2 Dec 2014 12:10:00 +0000 (+0000) Subject: Tweaks X-Git-Url: https://git.njae.me.uk/?p=cas-master-teacher-training.git;a=commitdiff_plain;h=9909c586038d3205f53a61e1ebca4faf9783c54d Tweaks --- diff --git a/Untitled0.ipynb b/Untitled0.ipynb index 992afac..cb95e56 100644 --- a/Untitled0.ipynb +++ b/Untitled0.ipynb @@ -1,13 +1,83 @@ { "metadata": { "name": "", - "signature": "sha256:a4f2510e4612d8ec6693f09edf9acc836f64b1078feac9000ff71e3ea775ee2f" + "signature": "sha256:78e6a962b2bb32da5900535436f656d194701924a6f32591d57f2b5973eb315c" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import string\n", + "string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 1, + "text": [ + "'abcdefghijklmnopqrstuvwxyz'" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "string.ascii_lowercase[:-2]" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 9, + "text": [ + "'abcdefghijklmnopqrstuvwx'" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "for i in range(10):\n", + " print(i, string.ascii_lowercase[i+2].upper())" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0 C\n", + "1 D\n", + "2 E\n", + "3 F\n", + "4 G\n", + "5 H\n", + "6 I\n", + "7 J\n", + "8 K\n", + "9 L\n" + ] + } + ], + "prompt_number": 14 + }, { "cell_type": "code", "collapsed": false, @@ -32,6 +102,40 @@ ], "prompt_number": 1 }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "members = ['Freddie', 'Brian', 'Roger', 'John']\n", + "members = ['Paul'] + members" + ], + "language": "python", + "metadata": {}, + "outputs": [], + "prompt_number": 20 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "members[99]" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "IndexError", + "evalue": "list index out of range", + "output_type": "pyerr", + "traceback": [ + "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mIndexError\u001b[0m Traceback (most recent call last)", + "\u001b[1;32m\u001b[0m in \u001b[0;36m\u001b[1;34m()\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mmembers\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m99\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m", + "\u001b[1;31mIndexError\u001b[0m: list index out of range" + ] + } + ], + "prompt_number": 22 + }, { "cell_type": "code", "collapsed": false, @@ -138,6 +242,29 @@ ], "prompt_number": 18 }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "l2 = []\n", + "for i in (2,4,8,22):\n", + " l2 += [i]\n", + "l2" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 25, + "text": [ + "[2, 4, 8, 22]" + ] + } + ], + "prompt_number": 25 + }, { "cell_type": "code", "collapsed": false, @@ -167,14 +294,17 @@ "language": "python", "metadata": {}, "outputs": [], - "prompt_number": 22 + "prompt_number": 26 }, { "cell_type": "code", "collapsed": false, "input": [ - "grid_nums = [int(n) for n in GRID_STRING.split()]\n", - "grid_nums" + "gt= {}\n", + "for x in range(COLUMNS):\n", + " for y in range(ROWS):\n", + " gt[(x,y)] = grid_nums[x + y * COLUMNS]\n", + "gt" ], "language": "python", "metadata": {}, @@ -182,165 +312,608 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 21, + "prompt_number": 41, "text": [ - "[8,\n", - " 2,\n", - " 22,\n", - " 97,\n", - " 38,\n", - " 15,\n", - " 0,\n", - " 40,\n", - " 0,\n", - " 75,\n", - " 4,\n", - " 5,\n", - " 7,\n", - " 78,\n", - " 52,\n", - " 12,\n", - " 50,\n", - " 77,\n", - " 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17, 77, 4, 89, 55, 40]\n", + "[4, 52, 8, 83, 97, 35, 99, 16, 7, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66]\n", + "[88, 36, 68, 87, 57, 62, 20, 72, 3, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69]\n", + "[4, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18, 8, 46, 29, 32, 40, 62, 76, 36]\n", + "[20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 4, 36, 16]\n", + "[20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54]\n", + "[1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]\n" + ] + }, { "metadata": {}, "output_type": "pyout", - "prompt_number": 24, + "prompt_number": 39, "text": [ "[[8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8],\n", " [49,\n", @@ -895,7 +2129,7 @@ ] } ], - "prompt_number": 24 + "prompt_number": 39 }, { "cell_type": "code", @@ -3325,6 +4559,349 @@ ], "prompt_number": 76 }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import collections\n", + "import string\n", + "collections.Counter(l for l in open('sherlock-holmes.txt').read()\n", + " if l in string.ascii_letters)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 51, + "text": [ + "Counter({'e': 52876, 't': 37842, 'a': 34376, 'o': 33200, 'n': 28378, 'h': 27803, 's': 26432, 'i': 26366, 'r': 24304, 'd': 18349, 'l': 16854, 'u': 13070, 'm': 11055, 'w': 10508, 'c': 10172, 'y': 8976, 'f': 8785, 'g': 7733, 'p': 6652, 'b': 5883, 'v': 4367, 'I': 3774, 'k': 3465, 'H': 1244, 'T': 1139, 'S': 762, 'A': 761, 'W': 758, 'M': 732, 'x': 541, 'B': 479, 'Y': 455, 'q': 406, 'j': 338, 'C': 327, 'O': 312, 'N': 304, 'L': 291, 'E': 235, 'D': 214, 'R': 204, 'F': 190, 'P': 183, 'G': 154, 'z': 147, 'J': 114, 'V': 85, 'K': 78, 'U': 46, 'Q': 20, 'X': 8, 'Z': 2})" + ] + } + ], + "prompt_number": 51 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import collections\n", + "import string\n", + "c = collections.Counter(l.lower() for l in open('sherlock-holmes.txt').read()\n", + " if l in string.ascii_letters)\n", + "[(l, c[l]) for l in sorted(c)]" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 50, + "text": [ + "[('a', 35137),\n", + " ('b', 6362),\n", + " ('c', 10499),\n", + " ('d', 18563),\n", + " ('e', 53111),\n", + " ('f', 8975),\n", + " ('g', 7887),\n", + " ('h', 29047),\n", + " ('i', 30140),\n", + " ('j', 452),\n", + " ('k', 3543),\n", + " ('l', 17145),\n", + " ('m', 11787),\n", + " ('n', 28682),\n", + " ('o', 33512),\n", + " ('p', 6835),\n", + " ('q', 426),\n", + " ('r', 24508),\n", + " ('s', 27194),\n", + " ('t', 38981),\n", + " ('u', 13116),\n", + " ('v', 4452),\n", + " ('w', 11266),\n", + " ('x', 549),\n", + " ('y', 9431),\n", + " ('z', 149)]" + ] + } + ], + "prompt_number": 50 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import random\n", + "import collections\n", + "import string" + ], + "language": "python", + "metadata": {}, + "outputs": [], + "prompt_number": 52 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "def only_lower_case(str):\n", + " ???\n", + " return ???" + ], + "language": "python", + "metadata": {}, + "outputs": [] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "words = [line.strip() \n", + " for line in open('/usr/share/dict/british-english').readlines()\n", + " if only_lower_case(line)]\n", + "words[:20]" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 57, + "text": [ + "['A',\n", + " \"A's\",\n", + " \"AA's\",\n", + " \"AB's\",\n", + " \"ABM's\",\n", + " \"AC's\",\n", + " \"ACTH's\",\n", + " \"AI's\",\n", + " \"AIDS's\",\n", + " \"AM's\",\n", + " 'AOL',\n", + " \"AOL's\",\n", + " \"ASCII's\",\n", + " \"ASL's\",\n", + " \"ATM's\",\n", + " \"ATP's\",\n", + " \"AWOL's\",\n", + " \"AZ's\",\n", + " \"AZT's\",\n", + " 'Aachen']" + ] + } + ], + "prompt_number": 57 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "string.ascii_letters" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 58, + "text": [ + "'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'" + ] + } + ], + "prompt_number": 58 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 60, + "text": [ + "'abcdefghijklmnopqrstuvwxyz'" + ] + } + ], + "prompt_number": 60 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "string.ascii_uppercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 61, + "text": [ + "'ABCDEFGHIJKLMNOPQRSTUVWXYZ'" + ] + } + ], + "prompt_number": 61 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "string.punctuation" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 62, + "text": [ + "'!\"#$%&\\'()*+,-./:;<=>?@[\\\\]^_`{|}~'" + ] + } + ], + "prompt_number": 62 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "'b' in string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 63, + "text": [ + "True" + ] + } + ], + "prompt_number": 63 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "'B' in string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 64, + "text": [ + "False" + ] + } + ], + "prompt_number": 64 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "[l for l in 'hello']" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 65, + "text": [ + "['h', 'e', 'l', 'l', 'o']" + ] + } + ], + "prompt_number": 65 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "for l in 'hello':\n", + " print(l)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "h\n", + "e\n", + "l\n", + "l\n", + "o\n" + ] + } + ], + "prompt_number": 66 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "'b' not in string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 67, + "text": [ + "False" + ] + } + ], + "prompt_number": 67 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "'B' not in string.ascii_lowercase" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 68, + "text": [ + "True" + ] + } + ], + "prompt_number": 68 + }, { "cell_type": "code", "collapsed": false, diff --git a/programming.html b/programming.html index 3323da4..2f96507 100644 --- a/programming.html +++ b/programming.html @@ -316,6 +316,11 @@ Turn the Euler 11 grid into: Do both with explicit iteration, then using only comprehensions. +```python +grid_nums = [int(n) for n in GRID_STRING.split()] +``` + + --- # Solutions with explicit loops