Python中isnumeric()方法的使用简介
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()
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();
当我们运行上面的程序,它会产生以下结果:
False True

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