|
| 1 | +{ |
| 2 | + "cells": [ |
| 3 | + { |
| 4 | + "cell_type": "markdown", |
| 5 | + "metadata": {}, |
| 6 | + "source": [ |
| 7 | + "# 第2章 Python如何运行程序" |
| 8 | + ] |
| 9 | + }, |
| 10 | + { |
| 11 | + "cell_type": "markdown", |
| 12 | + "metadata": {}, |
| 13 | + "source": [ |
| 14 | + "## Python解释器简介" |
| 15 | + ] |
| 16 | + }, |
| 17 | + { |
| 18 | + "cell_type": "markdown", |
| 19 | + "metadata": {}, |
| 20 | + "source": [ |
| 21 | + "- 解释器是代码与机器的计算机硬件之间的软件逻辑层\n", |
| 22 | + "- 安装的"Python包"包含了一个解释器和支持的库\n", |
| 23 | + "- Python的解释器很多,如:CPython、IPython、PyPy、JPython、IronPython,使用最广泛的是CPython(参考[\\[1\\]][1])\n", |
| 24 | + "[1]:https://blog.csdn.net/orangleliu/article/details/39204897" |
| 25 | + ] |
| 26 | + }, |
| 27 | + { |
| 28 | + "cell_type": "markdown", |
| 29 | + "metadata": {}, |
| 30 | + "source": [ |
| 31 | + "## 程序执行" |
| 32 | + ] |
| 33 | + }, |
| 34 | + { |
| 35 | + "cell_type": "markdown", |
| 36 | + "metadata": {}, |
| 37 | + "source": [ |
| 38 | + "- Python文件不一定以".py"结尾,只有在被导入时才是必须的\n", |
| 39 | + "- 程序执行\n", |
| 40 | + " - 将源代码编译成字节码:字节码是源代码底层的、与平台无关的表现形式,字节码保存在.pyc文件中,保存字节码可以加快启动速度,如果只有.pyc文件,没有.py文件,程序也能执行\n", |
| 41 | + " - 字节码发送到Python虚拟机(PVM)上执行:PVM就是迭代运行字节码指令的一个大循环" |
| 42 | + ] |
| 43 | + } |
| 44 | + ], |
| 45 | + "metadata": { |
| 46 | + "kernelspec": { |
| 47 | + "display_name": "Python 2", |
| 48 | + "language": "python", |
| 49 | + "name": "python2" |
| 50 | + }, |
| 51 | + "language_info": { |
| 52 | + "codemirror_mode": { |
| 53 | + "name": "ipython", |
| 54 | + "version": 2 |
| 55 | + }, |
| 56 | + "file_extension": ".py", |
| 57 | + "mimetype": "text/x-python", |
| 58 | + "name": "python", |
| 59 | + "nbconvert_exporter": "python", |
| 60 | + "pygments_lexer": "ipython2", |
| 61 | + "version": "2.7.10" |
| 62 | + } |
| 63 | + }, |
| 64 | + "nbformat": 4, |
| 65 | + "nbformat_minor": 2 |
| 66 | +} |
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