format(pi) print(formatted_pi) # 输出: 'Pi to two decimal places is 3.14' 日期格式化: python from datetime import datetime now = datetime.now() formatted_date = "Today's date is {:%Y-%m-%d}".format(now) print(formatted_date) # 输出类似: 'Today's date is 2023-10-04' 3. 不...
示例4：使用格式化占位符和格式化选项：pi = 3.141592653589793 formatted_string = "Pi is approximately {:.2f} or {:.5f} decimal places.".format(pi, pi) print(formatted_string) # 输出：Pi is approximately 3.14 or 3.14159 decimal places.注意事项 在使用format函数时，有一些技巧和注意事项可...
formatted_pi=f"Pi value rounded to two decimal places is{pi:.2f}"print(formatted_pi) 1. 2. 输出结果与上面相同: Pi value rounded to two decimal places is 3.14 1. 4. 什么时候使用哪个? str.format() 的优点与缺点 优点: 兼容性好,适用于所有 Python 版本。 功能强大,适用于复杂的格式化需求。
print("Pi to 2 decimal places is {:.2f}".format(pi)) 输出: Pi to 2 decimal places is 3.14 print("Square root of 2 is {:.2e}".format(math.sqrt(2))) 输出: Square root of 2 is 1.41e+00 print("Binary representation of 10 is {:b}".format(10)) 输出: Binary representation of...
1. Using f-strings (Python 3.6+) The first method to format a number with commas and 2 decimal places in Python is by using the f-strings method. Here’s how you can use f-strings: number = 1234567.8910 formatted_number = f"{number:,.2f}" ...
You would set the formatting for 2 decimal places as followsprettyprint 复制 DataGridview1.Columns("YourColumnName").DefaultCellStyle.Format = "N2" To see this in action place two DataGridView controls on a form, MastGrid and ChildGrid, add the code, build/run. The last two lines do ...
2. 3. 4. In this example, the format specifier.2fis used to specify that thepivalue should be formatted as a floating-point number with two decimal places. The output will beThe value of pi is 3.14. Named Placeholders In addition to using positional arguments with format string templates,...
现在推荐的方式是：name='wtf'print(f'name:{name}')比 format 更简单一些。百分号这种的，纯属清朝...
:=Try itPlaces the sign to the left most position :+Try itUse a plus sign to indicate if the result is positive or negative :-Try itUse a minus sign for negative values only :Try itUse a space to insert an extra space before positive numbers (and a minus sign before negative numbers...
2、Convert()方法: def convert(self, from_currency, to_currency, amount): initial_amount = amount if from_currency != 'USD' : amount = amount / self.currencies[from_currency] # limiting the precision to 4 decimal places amount = round(amount * self.currencies[to_currency], 4) return am...