示例4：使用格式化占位符和格式化选项：pi = 3.141592653589793 formatted_string = "Pi is approximately {:.2f} or {:.5f} decimal places.".format(pi, pi) print(formatted_string) # 输出：Pi is approximately 3.14 or 3.14159 decimal places.注意事项 在使用format函数时，有一些技巧和注意事项可...
python # 甚至可以嵌套格式化 nested = "The number {0:.{1}f} is formatted with {1} decimal places.".format(123.456, 2) print(nested) # 输出: The number 123.46 is formatted with 2 decimal places. 使用f-string(Python 3.6+) 从Python 3.6开始,引入了f-string(格式化字符串字面量),它提供了...
AI代码解释 x=10name='Lily'age=18pi=3.1415926# 常规示例print("Value of x is %d"%x)# 输出'Value of x is 10'print("My name is %s, I am %d years old"%(name,age))# 输出'My name is Lily, I am 18 years old'# 格式化整数示例print("Decimal: %d, Octal: %o, Hexadecimal: %x"%(x...
(可选) ### 示例 ```python pi = 3.141592653589793 formatted_string = "Pi to two decimal places: {:.2f}".format(pi) print(formatted_string) # 输出: Pi to two decimal places: 3.14 # 数字右对齐,总宽度为10个字符,并用0填充空位 number = 42 formatted_string = "Right aligned number: {:...
Pi value rounded to two decimal places is 3.14 1. 4. 什么时候使用哪个? str.format() 的优点与缺点 优点: 兼容性好,适用于所有 Python 版本。 功能强大,适用于复杂的格式化需求。 缺点: 语法较繁琐,特别是在需要使用多个变量时。 f-string 的优点与缺点 ...
例如: - **整数和小数格式化**: ```python pi = 3.1415926 "Pi rounded to two decimal places: {:.2f}".format(pi) # 输出: 'Pi rounded to two decimal places: 3.14' ``` - **填充和对齐**: ```python "Number padded with zeros to length 5: {:05d}".format(42) # 输出: '00042' ...
# decimal places pi = 3.1415 sentence = 'Pi is equal to {:.2f}'.format(pi) print(sentence) # Double format: decimal & comma to seperate large number sentence = '1mb equals to {:,.2f}'.format(1000**2) print(sentence) # You can get the dates, the weeks, and the number of the...
The format specifier {:.2f} rounds the number to 2 decimal places. The function is similar to the string format method but called as a standalone function. It's useful when you need to format values dynamically. Number FormattingThe format function provides extensive options for number ...
def convert(self, from_currency, to_currency, amount): initial_amount = amount if from_currency != 'USD' : amount = amount / self.currencies[from_currency] # limiting the precision to 4 decimal places amount = round(amount * self.currencies[to_currency], 4) return amount ...
'd' - Decimal format 'e' - Scientific format, with a lower case e 'E' - Scientific format, with an upper case E 'f' - Fix point number format 'F' - Fix point number format, upper case 'g' - General format 'G' - General format (using a upper case E for scientific notations)...