Learn how to round a number to 2 decimal places in Python for improved precision using techniques like round(), format(), and string formatting techniques.
python def round_to_two_decimal_places(number): return f"{number:.2f}" # 测试 print(round_to_two_decimal_places(3.1)) # 输出: 3.10 print(round_to_two_decimal_places(3.14159)) # 输出: 3.14 在这个解决方案中,我们使用了Python的f-string格式化功能,通过{number:.2f}来指定保留两位小数,并确...
# 进行四舍五入num=3.14159rounded_num=round(num,2)print(f"{num}rounded to two decimal places is{rounded_num}.") 1. 2. 3. 4. 输出结果: 3.14159 rounded to two decimal places is 3.14. 1. 2.3 使用注意事项 当ndigits为负数时,round()会将数字四舍五入到最接近的10的幂,例如: num=1234rou...
Write a Python program to round a floating-point number to a specified number of decimal places. Sample Solution: Round to specified Decimals using %f Function: Python Code: # Define the order amount as a floating-point number.order_amt=212.374# Print the total order amount with 6 decimal p...
round(5.5):rounds the float5.5to6. Example 2: Round a number to the given number of decimal places print(round(2.665,2))print(round(2.675,2)) Run Code Output 2.67 2.67 When the decimal2.675is converted to a binary floating-point number, it's again replaced with a binary approximation, ...
Round up using the decimal module for precision The decimal module in Python is useful for rounding float numbers to precise decimal places. It is important for achieving precise decimal rounding, especially in financial calculations. You can use the decimal module to create Decimal objects from str...
Round off to 2 decimal places : 3.14 Round off to nearest integer : 3 从上面的输出结果可以看出，在没有提供ndigits参数时，round函数将会把3.1415四舍五入至最接近的整数，即3。而在提供ndigits参数时，round函数则会把3.1415四舍五入至2位小数，即3.14。例2：#!/usr/bin/python3 b= 3.75 #...
6、考虑使用decimal模块:如果你需要更精确的控制或更可靠的舍入行为,可以考虑使用Python的decimal模块,这个模块提供了Decimal类,用于高精度的十进制数运算和舍入。 7、了解Python版本之间的差异:不同版本的Python可能对round()函数的行为有所不同,特别是Python 2和Python 3在舍入到偶数的方式上有所不同,确保你了解...
np.round() function in Python Thenp.round() function in Python, part of the NumPy library, is used for rounding elements in an array to a specified number of decimal places. It takes an array and an optional ‘decimals’ argument, which defaults to zero if not provided. The function re...
Python has an in-built round() method to round off any number.It takes two parameters as input - num - The number to be rounded. decimal_places - The number of digits to be rounded off (default being 0). Let's try rounding off a number for different decimal places - # Round down...