| Return True if the string is a whitespace string, False otherwise. | | A string is whitespace if all characters in the string are whitespace and there | is at least one character in the string. | | istitle(self, /) | Return True if the string is a title-cased string, False other...
浮点型(float) 布尔型(bool) 复数性(complex) 字符型(string):表示数据组成是字符 列表(list):用来表示一组有序元素,后期数据可以修改 ['A','B','C'] 元组(tuple):用来表示一组有序元素,后期数据不可修改 ('A','B','C','1') 集合(set):一组数据无序不重复元素 set([1,2,3,4]) 字典(dictio...
Python有以下三种的数值类型: 整型(integers),浮点型(floating point numbers), 以及 复数(complex numbers)。此外,布尔是整数的子类型。 数值类型说明 整数由1-n个数字字符表示,整数的类型名称是int,所有的整数都是类型int的实例;浮点数由整数部分和小数部分构成,中间用.连接,浮点数的类型名称是float,所有浮点数都...
if(PyByteArray_Check(x)) string= PyByteArray_AS_STRING(x);// 如果是 bytearray 类型的话, 通过 PyByteArray_AS_STRING(x) 转换 x 为 str 类型 else string= PyBytes_AS_STRING(x);// 如果是 bytes 类型的话,通过 PyBytes_AS_STRING(x) 转换 x 为 str return_PyLong_FromBytes(string, Py_S...
【Python3_基础系列_005】Python3-string-字符串 一、string的方法 >>>dir(str) ['__add__', '__class__', '__contains__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__getnewargs__', '__gt_...
| interpret the base from the string as an integer literal. | >>> int('0b100', base=0) | 4 | | Methods defined here: | | __abs__(...) | x.__abs__() <==> abs(x) | | __add__(...) | x.__add__(y) <==> x+y ...
长整型(long integers)- 无限大小的整数,整数最后是一个大写或小写的L。 浮点型(floating point real values)- 浮点型由整数部分与小数部分组成,浮点型也可以使用科学计数法表示(2.5e2 = 2.5 x 102 = 250) 复数(complex numbers)- 复数由实数部分和虚数部分构成,可以用a + bj,或者complex(a,b)表示, 复数的...
The built-in float type has a few methods and attributes which can be useful in some situations. Here’s a quick summary of them:MethodDescription .as_integer_ratio() Returns a pair of integers whose ratio is exactly equal to the original float .is_integer() Returns True if the float ...
Comparing floating-point numbers is a bit more complicated than comparing integers. The value stored in a float object may not be precisely what you’d think it would be. For that reason, it’s bad practice to compare floating-point values for exact equality using the == operator.Consider ...
25. float() returns floating point number from number, string 26. format() returns formatted representation of a value Using format() by overriding format() class Person: def __format__(self, format): if(format == 'age'): return '23' return 'None' print(format(Person(), "age")) ...