Python中isnumeric()方法的使用简介

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Release: 2016-06-06 11:16:52
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 isnumeric()方法检查字符串是否仅由数字组成。这种方法只表示为Unicode对象。

注意:要定义一个字符串为Unicode,只需前缀分配'u'引号。以下是示例。
语法

以下是isnumeric()方法的语法:

str.isnumeric()

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参数

  • NA

返回值

如果字符串中的所有字符都是数字此方法返回true,否则返回false。
例子

下面的例子显示了isnumeric()方法的使用。

#!/usr/bin/python


str = u"this2009"; 
print str.isnumeric();

str = u"23443434";
print str.isnumeric();

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当我们运行上面的程序,它会产生以下结果:

False
True

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