Lbeta成长记

2. Using the Python Interpreter(使用Python解释器) 2.1. Invoking the Interpreter(调用解释器) The Python interpreter is usually installed as /usr/local/bin/python3.2 on those machines where it is available; p

1. Whetting Your Appetite(开胃菜) If you do much work on computers, eventually you find that there’s some task you’d like to automate. For example, you may wish to perform a search-and-replace over a

3. An Informal Introduction to Python(Python简介) In the following examples, input and output are distinguished by the presence or absence of prompts (>>> and ...): to repeat the example, you must ty

6. Modules(模块) If you quit from the Python interpreter and enter it again, the definitions you have made (functions and variables) are lost. Therefore, if you want to write a somewhat longer progra

8. Errors and Exceptions错误和异常 Until now error messages haven’t been more than mentioned, but if you have tried out the examples you have probably seen some. There are (at least) two distinguishable

4. More Control Flow Tools(深入控制流) Besides the while statement just introduced, Python knows the usual control flow statements known from other languages, with some twists. 除了上一节介绍的 while 循环语句外，Pyt