Use the math.Ceil function to round up and return the smallest integer greater than or equal to the specified floating point number.

Code example of using math.Ceil function to round up

In daily programming, we often need to round floating point numbers. The math module in Python provides a series of functions to help us implement different types of rounding operations, including the upward rounding function math.Ceil.

math.Ceil function is to return the smallest integer greater than or equal to the specified floating point number. That is, if the parameter passed in is an integer or an integer part of a decimal, then the function returns the original value; if the parameter passed in is a decimal and has a decimal part, it is rounded up to the nearest integer.

The following is a code example that uses the math.Ceil function to round up:

import math

def ceil_float(number):
    '''
    使用math.Ceil函数向上取整
    '''
    result = math.ceil(number)
    return result

# 测试向上取整功能
num1 = 3.6
print(f"{num1}向上取整后的结果为：{ceil_float(num1)}")

num2 = 5.0
print(f"{num2}向上取整后的结果为：{ceil_float(num2)}")

num3 = 9.2
print(f"{num3}向上取整后的结果为：{ceil_float(num3)}")

The above code first imports the math module, and then defines a function named ceil_float , this function accepts a parameter number, and returns the passed parameter after rounding up.

The next part of the code is to test the ceil_float function. We have defined three test cases respectively, namely num1, num2 and num3, which are 3.6, 5.0 and 9.2 respectively and need to be rounded up. floating point number.

By calling the ceil_float function and passing in these three test cases, the results are finally printed. It can be seen from the output that 3.6 is rounded up to 4, 5.0 is still 5 after rounding up, and 9.2 is rounded up to 10, which is consistent with our expectations.

Summary:
In this article, we introduced the method of rounding up using the math.Ceil function and provided corresponding code examples. By using this function, we can easily implement the upward rounding operation of floating point numbers and conveniently handle the rounding requirements in floating point number operations.

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