pi = 3.1415926535 print(f"Pi rounded to 2 decimal places: {pi:.2f}") 四、其他格式化方式 百分号格式化:这是Python中最古老的字符串格式化方法,类似于C语言的printf。使用%作为占位符。 name = "Alice" age = 30 print("Name: %s, Age: %d" % (name, age)) 模板字符串:通过string.Template类实现...
print(f"Pi to three decimal places: {pi:.3f}") 这个语句会输出“Pi to three decimal places: 3.142”。 三、使用字符串连接 你可以使用加号+来连接多个字符串: name = "Alice" age = 30 print("Name: " + name + ", Age: " + str(age)) 这个语句会输出“Name: Alice, Age: 30”。 1、...
The example also prints percentage multiplied by 100, with 2 decimal places and followed by a percent sign (see Format Specification Mini-Language for details).Finally, you can do all the string handling yourself by using string slicing and concatenation operations to create any layout you can ...
Input There are T test cases, in each case there are 2 decimal number representing the coordinate of the given point. Output For each testcase you are supposed to output the coordinates of both of the unknow points by 3 decimal places of precision Alway output the lower one first(with a ...
%操作符是Python中最古老的字符串格式化方法,它模仿了C语言中的printf函数。这种方法通过在字符串中指定格式占位符(如%s、%d等),并在字符串后使用%操作符和元组(或字典,在%后使用字典的键作为占位符)来替换这些占位符。 示例代码: python name = "Alice" age = 30 salary = 5000 # 使用元组 context1 = "...
类似于 C/C++ 的printf,Python 的print也能实现格式化输出,方法是使用%操作符,它会将左边的字符串当做格式字符串,将右边的参数代入格式字符串: print("100 + 200 = %d"%300)#左边的%d被替换成右边的300print("A的小写是%s"%"a")#左边的%s被替换成右边的a ...
For each case, print the operation result. The result should be rounded to 2 decimal places If and only if it is not an integer. Sample Input 4 + 1 2 - 1 2 * 1 2 / 1 2 Sample Output 3 -1 2 0.50 import java.util.Scanner; ...
The .2f part tells Python that you want to format the value as a floating-point number (f) with two decimal places (.2). Note: To learn more about the formatting mini-language and its syntax, check out the Python’s Format Mini-Language for Tidy Strings tutorial. If you’re ...
格式说明符的写法来自C语言的printf函数,Python语言以及其他一些编程语言,都依照那套写法来规定自己的格式字符串。所以,常见的printf选项都可以当成Python的格式说明符来用,例如%s、%x、%f等,此外还可以控制小数点的位值,并指定填充与对齐方式。许多Python新手程序员都喜欢用C风格的格式字符串,因为他们比较熟悉这种风格,...
print(f"Pi rounded to 2 decimal places: {pi:.2f}") 在上面的例子中,{pi:.2f}表示将pi格式化为保留2位小数的浮点数。 六、在f-string中使用lambda表达式 我们可以在f-string中使用简单的lambda表达式来进行一些即时计算。 x = 5 y = 10 print(f"The sum of {x} and {y} is {(lambda a, b:...