From a5a778ae6b3790420b5add0b818a9d2a05e2a9a0 Mon Sep 17 00:00:00 2001 From: Donne Martin Date: Mon, 26 Jan 2015 07:23:28 -0500 Subject: [PATCH] Moved range and xrange snippets from basics to structs_utils IPython Notebook. --- core/basics.ipynb | 124 +-------------------------- core/structs_utils.ipynb | 178 +++++++++++++++++++++++++++++++++------ 2 files changed, 151 insertions(+), 151 deletions(-) diff --git a/core/basics.ipynb b/core/basics.ipynb index ff1b566..a915a0b 100644 --- a/core/basics.ipynb +++ b/core/basics.ipynb @@ -1,7 +1,7 @@ { "metadata": { "name": "", - "signature": "sha256:de3e7aeb6537656e464e30d624c213fb29ce962afef43280fb2d84c3a1ca1858" + "signature": "sha256:f18acafc8b418eb856d25b1dc48f6dd4e97b85f845419650b4b4cd4fa7fa3e3c" }, "nbformat": 3, "nbformat_minor": 0, @@ -534,128 +534,6 @@ } ], "prompt_number": 15 - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "## range and xrange" - ] - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "Generate a list of evenly spaced integers. Note: range is no longer avalable in Python 3 " - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "range(10)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "metadata": {}, - "output_type": "pyout", - "prompt_number": 16, - "text": [ - "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]" - ] - } - ], - "prompt_number": 16 - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "Range can take start, stop, and step arguments" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "range(0, 20, 3)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "metadata": {}, - "output_type": "pyout", - "prompt_number": 17, - "text": [ - "[0, 3, 6, 9, 12, 15, 18]" - ] - } - ], - "prompt_number": 17 - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "It is very common to iterate through sequences by index with range" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "seq = [1, 2, 3]\n", - "for i in range(len(seq)):\n", - " val = seq[i]\n", - " print(val)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "1\n", - "2\n", - "3\n" - ] - } - ], - "prompt_number": 18 - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "xrange is recommended for longer ranges and is available in Python 3 as range. It returns an iterator that generates integers one by one rather than all at once and storing them in a large list." - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "sum = 0\n", - "for i in xrange(100000):\n", - " if i % 2 == 0:\n", - " sum += 1\n", - "print(sum)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "50000\n" - ] - } - ], - "prompt_number": 19 } ], "metadata": {} diff --git a/core/structs_utils.ipynb b/core/structs_utils.ipynb index a5269db..723bdf5 100644 --- a/core/structs_utils.ipynb +++ b/core/structs_utils.ipynb @@ -1,7 +1,7 @@ { "metadata": { "name": "", - "signature": "sha256:aff21c8ceeca329c78b70a0f35aeb222827eaa712b68639150e540efb9afb0ea" + "signature": "sha256:e8e69422df4f0a0c0dd9481fd9ceb6bf8bc028d54fbe134de2957e387db35dca" }, "nbformat": 3, "nbformat_minor": 0, @@ -250,6 +250,128 @@ ], "prompt_number": 8 }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## range and xrange" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "Generate a list of evenly spaced integers. Note: range is no longer avalable in Python 3 " + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "range(10)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 9, + "text": [ + "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "Range can take start, stop, and step arguments" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "range(0, 20, 3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "metadata": {}, + "output_type": "pyout", + "prompt_number": 10, + "text": [ + "[0, 3, 6, 9, 12, 15, 18]" + ] + } + ], + "prompt_number": 10 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "It is very common to iterate through sequences by index with range" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "seq = [1, 2, 3]\n", + "for i in range(len(seq)):\n", + " val = seq[i]\n", + " print(val)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1\n", + "2\n", + "3\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "xrange is recommended for longer ranges and is available in Python 3 as range. It returns an iterator that generates integers one by one rather than all at once and storing them in a large list." + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "sum = 0\n", + "for i in xrange(100000):\n", + " if i % 2 == 0:\n", + " sum += 1\n", + "print(sum)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "50000\n" + ] + } + ], + "prompt_number": 12 + }, { "cell_type": "markdown", "metadata": {}, @@ -273,7 +395,7 @@ "language": "python", "metadata": {}, "outputs": [], - "prompt_number": 9 + "prompt_number": 13 }, { "cell_type": "markdown", @@ -295,13 +417,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 10, + "prompt_number": 14, "text": [ "5" ] } ], - "prompt_number": 10 + "prompt_number": 14 }, { "cell_type": "markdown", @@ -323,13 +445,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 11, + "prompt_number": 15, "text": [ "[1, 2, 2, 3, 5, 8, 13]" ] } ], - "prompt_number": 11 + "prompt_number": 15 }, { "cell_type": "markdown", @@ -359,13 +481,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 12, + "prompt_number": 16, "text": [ "[1, 3, 5, 6, 7, 9]" ] } ], - "prompt_number": 12 + "prompt_number": 16 }, { "cell_type": "markdown", @@ -388,13 +510,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 13, + "prompt_number": 17, "text": [ "['the', 'fox', 'over', 'quick', 'brown', 'jumps']" ] } ], - "prompt_number": 13 + "prompt_number": 17 }, { "cell_type": "markdown", @@ -422,13 +544,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 14, + "prompt_number": 18, "text": [ "[1, 2, 5, 7, 8, 9]" ] } ], - "prompt_number": 14 + "prompt_number": 18 }, { "cell_type": "code", @@ -442,13 +564,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 15, + "prompt_number": 19, "text": [ "[' ', ' ', 'a', 'a', 'b', 'b', 'f', 'o', 'o', 'r', 'z']" ] } ], - "prompt_number": 15 + "prompt_number": 19 }, { "cell_type": "markdown", @@ -470,13 +592,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 16, + "prompt_number": 20, "text": [ "[1, 2, 5, 7, 8, 9, (1, 2), (4, 2)]" ] } ], - "prompt_number": 16 + "prompt_number": 20 }, { "cell_type": "markdown", @@ -504,13 +626,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 17, + "prompt_number": 21, "text": [ "[(1, 2), (1, 2), (4, 2), 1, 5, 2, 9, 9, 7, 8, 1, 5, 2]" ] } ], - "prompt_number": 17 + "prompt_number": 21 }, { "cell_type": "markdown", @@ -548,7 +670,7 @@ ] } ], - "prompt_number": 18 + "prompt_number": 22 }, { "cell_type": "markdown", @@ -578,13 +700,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 19, + "prompt_number": 23, "text": [ "[(1, 'foo'), (2, 'bar'), (3, 'baz')]" ] } ], - "prompt_number": 19 + "prompt_number": 23 }, { "cell_type": "markdown", @@ -606,13 +728,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 20, + "prompt_number": 24, "text": [ "[(1, 'foo', True), (2, 'bar', False)]" ] } ], - "prompt_number": 20 + "prompt_number": 24 }, { "cell_type": "markdown", @@ -641,7 +763,7 @@ ] } ], - "prompt_number": 21 + "prompt_number": 25 }, { "cell_type": "markdown", @@ -664,13 +786,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 22, + "prompt_number": 26, "text": [ "(1, 2, 3)" ] } ], - "prompt_number": 22 + "prompt_number": 26 }, { "cell_type": "code", @@ -684,13 +806,13 @@ { "metadata": {}, "output_type": "pyout", - "prompt_number": 23, + "prompt_number": 27, "text": [ "('one', 'two', 'three')" ] } ], - "prompt_number": 23 + "prompt_number": 27 } ], "metadata": {}