firstName ='Bob'lastName='Dylan'print('你的名字是%s, 你的姓是%s'% (firstName, lastName)) 对于string, list等类型的变量,一律可用%s代替。 对于int类型,用%d 对于float类型,用%f 如果需要对float类型的变量进行小数点后位数的控制,则使用%.<number of digits>f。如 pai = 3.14159print('%.2f'%pai...
Strings can beconcatenatedto build longer strings using the plus sign and also they can bemultipliedby a number, which results in the continuous repetition of the string as many times as the number indicates. Also, if we want to find out thelengthof the string, we simply have to use thelen...
print("This number in scientific notation: %e" % 1234567) print("My chances are %%%d" % 100) # 'My chances are %100' 1. 2. 3. 4. 5. 6. 注意:%的方式虽然可以实现字符串格式化,但在 Python 3.6 以后,官方更推荐使用 f-string(格式化字符串)的方式,例如: name = "Alice" age = 25 pri...
f-string,亦称为格式化字符串常量(formatted string literals),是Python3.6新引入的一种字符串格式化方法,该方法源于PEP 498 – Literal String Interpolation,主要目的是使格式化字符串的操作更加简便。f-string在形式上是以 f 或 F 修饰符引领的字符串(f'xxx' 或 F'xxx'),以大括号 {} 标明被替换的字段;f-s...
You can gain additional control over the resulting format by using conversion flags, which you’ll learn more about in an upcoming section.Remove ads Floating-Point Conversion TypesConversion types f and F convert to a string representation of a floating-point number, while e and E produce a ...
format替换「%」说明:This PEP proposes a new system for built-in string formatting operations, intended as a replacement for the existing ‘%’ string formatting operator. No.1 万恶的加号 Python中的字符串在C语言中体现为是一个字符数组,每次创建字符串时候需要在内存中开辟一块连续的空,并且一旦需要修...
Format String Syntax Replacement Fields Syntax 替代字段特点 standard format specifier 对齐(align) 符号(sign) \#号选项 千位分隔符(thousand separator) 最小域宽(field width) 精度(precision) 类型(type) 什么是str.format呢? str.format()就是字符串类型的一个函数,它用来执行字符串格式化操作。
Concatenate any number of strings. The string whose method is called is inserted in between each given string. The result is returned as a new string. Example: '.'.join(['ab', 'pq', 'rs']) -> 'ab.pq.rs' 连接任意数量的字符串。
precision Specifies the number of digits after the decimal point for floating-point presentation types, and the maximum output width for string presentations types Integer value type Specifies the presentation type, which is the type of conversion performed on the corresponding argument b, c, d, e...
八、string模块常用字符串常量 结束 《Python语言程序设计基础》: 在Python解析器内部,所有数据类型都采用面向对象方式实现,封装成一个类。 字符串也是一个类,它具有类似.()形式的字符串处理函数。 在面向对象中,这类函数被称为“方法”。 无特别说明,str是将要进行处理的目标字符串。全部方法操作后返回副本,不赋值...