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...
def keep_two_decimal_places(number): decimal = int((number - int(number)) * 100) p...
Round to 2 decimal places using string formatting techniques String formatting techniques are useful for rounding numbers to two decimal places, especially when displaying the number in the output. Keep in mind that when you use string formatting techniques in Python to round a number, the rounded...
You can also specify text alignment using the greater than operator:>. For example, the expression{:>3.2f}would align the text three spaces to the right, as well as specify a float number with two decimal places. Conclusion In this article, I included an extensive guide of string data typ...
# print the original data and the reconstructed data and keep the output to 2 decimal places print('{:.2f} {:.2f}'.format(signal[i], r_signal[i])) if __name__ == '__main__': main() # Call the main function 1. 2.
price=models.DecimalField(max_digits=5,decimal_places=2) keepNum=models.IntegerField() Book(nid=2,title='alex传',publishDate='2017-10-25',price='100.22',keepNum=2) #实例化对象就是在Book表中添加 记录 创建数据库的两条命令: python manage.py makemigrations #app01(应用中的migrations文件夹中...
{} playing with this python, he loves it.'.format(name))#code006 formatting methon(in details)print('{0:.3f}'.format(1.0/3))#keep 3 decimal placesprint('{0:_^11}'.format('hello'))#11bits and some bits are replaced by lettersprint('{name} wrote {book}'.format(name='Lebron',...
# Use only 2 decimal places for each amount. Exercise 7 – Grand total.py # Enter the price of a meal at the restaurant. Determine the tax paid for that meal at a tax rate of your choice and tip at the rate of 10% of meal amount without the tax. ...
Numeric types with a zero value like 0, 0.0, 0j, Decimal(0), and Fraction(0, 1) Empty sequences and collections like "", (), [], {}, set(), and range(0) Objects that implement __bool__() with a return value of False or __len__() with a return value of 0 Any other ...
As you can see, the pi value is given to fifteen decimal places in Python. The number of digits provided depends on the underlying C compiler. Python prints the first fifteen digits by default, and math.pi always returns a float value.So what are some of the ways that pi can be ...