def round_to_two_places(value): return float(format(value, '.2f')) value = 3.14159 rounded_value = round_to_two_places(value) print(rounded_value) # 输出:3.14 自定义函数的优点是灵活,可以根据具体需求实现特定的功能,例如自定义四舍五入规则、处理特殊情况等。 六、在数据分析中的应用 在数据分...
Round to 2 decimal places using the round() function The round() function is Python’s built-in function for rounding float point numbers to the specified number of decimal places. You can specify the number of decimal places to round by providing a value in the second argument. The example...
用float()处理可以得到float类型: float({:.2f}.format(13.949999999999999)) Note 2:wrapping withfloat()doesn\’t change anything: 注2:用float()不会改变任何结果: >>> x = 13.949999999999999999>>> x13.95>>> g = float({:.2f}.format(x))>>> g13.95>>> x == gTrue>>> h = round(x, 2...
AI检测代码解析 # 保留价格的两位有效数字df['价格']=df['价格'].apply(lambdax:round(x,2))# Round to 2 decimal placesprint("格式化后的 DataFrame:")print(df)# 打印格式化后的 DataFrame 1. 2. 3. 4. 第四步:查看格式化后的 DataFrame 我们在上一步中已经打印了格式化后的 DataFrame,如下所示: ...
# Import the math module to access math.ceil() function import math number = -3.14 rounded_up = math.ceil(number) print(rounded_up) Powered By Round up using the decimal module for precision The decimal module in Python is useful for rounding float numbers to precise decimal places. It ...
This example shows round with different numbers. Without precision, it rounds to nearest integer. Note the bankers rounding for 0.5 cases. With precision argument, it rounds to specified decimal places. The function returns a float even when rounding to whole numbers with precision specified. ...
round()函数可以接受两个参数,第一个参数是要进行截断的浮点数,第二个参数是要保留的小数位数。为了截断浮点数后面的小数,可以将小数部分与整数部分相加后取整数部分。具体实现如下: 代码语言:txt 复制 import math def truncate_float(num, decimal_places): integer_part = int(num) # 获取整数部分 decimal...
Round Float to Decimals 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...
Fast method to round half up or down in python [duplicate] Solution 1: Fast in-place rounding halves down: arr = arr.view(float) m = arr % 1. <= .5 arr[m] = np.floor(arr[m]) arr[~m] = np.ceil(arr[~m]) arr = arr.view(complex) ...
inf代表无穷大,这仅仅意味着你试图创建的数字超出了你的计算机所允许的最大浮点值。inf的类型仍然是float:>>> n = 2e400 >>> n inf >>> type(n) <class 'float'> Python 还使用了-inf,它代表负无穷大,代表一个负浮点数,超出了计算机上允许的最小浮点数:>...