Python基本使用教程_“math库的使用” 的相关文章

1.基本的使用

启动程序或执行操作均可，请按照以下步骤操作：先复制以下代码，接着按下回车键，观察程序运行后的结果。执行命令：`print('\n'.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join([''.join

for循环

range()函数定义了range（start，end，step）这一格式，它能生成一个可遍历的对象，相当于一个序列。在这个序列中，起始值start会被包含，而结束值end则不包括在内。举例来说，range（1,101）将生成从1到100的序列，而range（101）则生成从0到100的序列。range（1,100,2），返回1,3,5.....

列表实例

将100个随机产生的小写英文字母收集至一个序列，然后对从'a'至'z'的每个字母出现的频次进行计数。其中，'a'的ASCII码值为97，'z'的ASCII码值为122。通过遍历序列中的每个元素，将其ASCII码值与'a'和'z'的值进行比较，从而计算出每个字母出现的次数。

顺序查找

若需确定特定数值在序列中的具体索引（用于后续的替换或移除操作），可借助index函数实现。例如，#100这一标识符系预先设定于列表之中；运用此函数，即可获取所需位置，记作pos=.index()。

列表作为函数参数

将列表作为函数的输入参数，在函数内部能够对原始列表进行编辑操作（例如：使用长度函数获取列表长度，或通过列表推导式生成新的列表元素）：例如，给定列表aList=[1,2,3,4,5]，在函数中可以执行如下操作：[i]*= aList=[1,2,3,4,5]。