示例 假设我们有一个数值列表[0.123, 1.234, 12.345, 123.456, 1234.567],我们希望将每个数值保留两位有效数字并自动补0。 numbers=[0.123,1.234,12.345,123.456,1234.567]fornumberinnumbers:rounded_number=round_to_two_decimal_places(number)print(rounded_number) 1. 2. 3. 4. 5. 运行以上代码,输出结果如下...
decimal_places = 2:设置希望保留的小数位数为2位。 for row in matrix:遍历矩阵的每一行。 formatted_row = [format_number(num, decimal_places) for num in row]:对每个数字调用format_number函数进行格式化。 print(" ".join(formatted_row)):将格式化后的数字组合并打印。 第四步:调试和测试代码 在实际...
In the example below, f indicates the value as a floating-point number while .2 specifies the decimal places to round the number. # Example number to be rounded number = 3.14159 # Using the % operator to round to 2 decimal places formatted_number = "%.2f" % number print(formatted_numbe...
31. Print numbers with sign (2 decimals). Write a Python program to print the following numbers up to 2 decimal places with a sign. Click me to see the sample solution 32. Print numbers without decimal places. Write a Python program to print the following positive and negative numbers wit...
>>> num = 4.123956>>> f"num rounded to 2 decimal places = {num:.2f}"'num rounded to 2 decimal places = 4.12'如果不做任何指定，那么浮点数用最大精度 >>> print(f'{num}')4.123956 格式化百分比数 >>> total = 87>>> true_pos = 34>>> perc = true_pos / total>>> perc0....
1.1 数值型(number) 例子: a, b, c, d = 20, 5.5, True, 4+3j print(a, b, c, d) # 20 5.5 True (4+3j) print(type(a), type(b), type(c), type(d)) # <class 'int'> <class 'float'> <class 'bool'> <class 'complex'> Python也可以这样赋值: ...
To round to one decimal place, replace .2 with .1: Python >>> n = 7.126 >>> f"The value of n is {n:.1f}" 'The value of n is 7.1' When you format a number as fixed point, it’s always displayed with the precise number of decimal places that you specify: Python >>>...
So, when you’re in an interactive session, you don’t need to use the print() function to check the result of an expression. You can just type in the expression and press Enter to get the result.Again, the standard division operator (/) always returns a floating-point number, even ...
rounded = round(13.485, 2) print(rounded) Let’s see the output for this program: The number in program can be rounded to 13.48 or 13.49. By default, theround(...)function rounds down. This can be changed as well: import decimal ...
print("Round negative float -0.4, -0.5, -0.6: ") print(round(-0.4)) print(round(-0.5)) print(round(-0.6)) # Rounding off floating point <0.5, 2="" upto="" various="" places="" of="" decimal="" print("round="" 0.4="" 0,1,="" and="" decimal:="" ")="" print(...