下面是一个完整的示例,将字符串转换为两位小数数字: defconvert_to_two_decimal_places(num_str):num_float=float(num_str)formatted_num="{:.2f}".format(num_float)returnfloat(formatted_num)num_str="3.14159"result=convert_to_two_decimal_places(num_str)print(result)# 输出:3.14 1. 2. 3. 4. 5...
x = 1234.56789#Two decimal places of accuracyprint(format(x,'0.2f'))#'1234.57'#Right justified in 10 chars, one-digit accuracyprint(format(x,'>10.1f'))#'1234.6'#Left justifiedprint(format(x,'<10.1f'))#'1234.6 '#Centeredprint(format(x,'^10.1f'))#1234.6#Inclusion of thousands separator...
要控制精度,可以使用format()方法或者f-string来进行格式化打印。以下是两种方法的示例: 使用format()方法: num = 3.1415926 print("Pi value with 2 decimal places: {:.2f}".format(num)) 复制代码 使用f-string: num = 3.1415926 print(f"Pi value with 2 decimal places: {num:.2f}") 复制代码 ...
1. 2. 3. 全局保持两位数 有时候我们希望在整个程序中都保持数字的格式为两位小数。这时可以自定义一个函数或者类来实现全局保持两位数的功能。 defkeep_two_decimal_places(num):return"{:.2f}".format(num)# 使用示例num=3.1415926formatted_num=keep_two_decimal_places(num)print(formatted_num)# 输出 3.14...
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以帮助你更有效地使用它。了解不同的...
percentage = f"{value:.2f}%" # format the value to a string with 2 decimal places and append a "%" sign print(percentage) # output: 50.00% 在Python中，我们可以使用多种方法来输出百分比。最常用的方法是使用print()函数和格式化字符串。从Python 3.6开始，推荐使用f-strings(格式化字符串字面...
print("Pi to 2 decimal places is {:.2f}".format(pi)) 输出: Pi to 2 decimal places is 3.14 print("Square root of 2 is {:.2e}".format(math.sqrt(2))) 输出: Square root of 2 is 1.41e+00 print("Binary representation of 10 is {:b}".format(10)) ...
print("Original Number: ", x) # Format the value of 'x' to two decimal places and print it with a label. print("Formatted Number: "+"{:.2f}".format(x)) # Print the original value of 'y' with a label. print("Original Number: ", y) # Format the value of 'y' to two ...
2. Using the format() Function Theformat()function is another versatile way to format numbers with commas and two decimal places: number = 1234567.8910 formatted_number = "{:,.2f}".format(number) print(formatted_number) Similar to f-strings, the format specifier:,adds commas, and.2fensures...
x=3.14159265# 使用 format 函数：print("{:.2f}".format(x))# 使用 round 函数：print(round(x...