num = 12345.6789print("{:0>10.2f}".format(num)) # 输出格式为至少10位，小数点后保留2位，且右侧对齐的字符串 使用str.format()方法同时输出多个变量当你需要同时输出多个变量时，str.format()方法同样适用。你可以在字符串中预留多个{}占位符，然后依次将变量传入format()方法进行格式化输出。示例：name...
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以帮助你更有效地使用它。了解不同的...
NumberFormatter+format(float number, str format)+formatAsPercentage(float number, int decimalPlaces)DecimalFormatter+formatToDecimal(float number, int decimalPlaces)PercentageFormatter+formatToPercentage(float number, int decimalPlaces) 在这个类图中,NumberFormatter作为主要的格式化类,它可以调用DecimalFormatter和...
percentage = f"{value:.2f}%" # format the value to a string with 2 decimal places and append a "%" sign print(percentage) # output: 50.00% 在Python中，我们可以使用多种方法来输出百分比。最常用的方法是使用print()函数和格式化字符串。从Python 3.6开始，推荐使用f-strings(格式化字符串字面...
在Python中,我们通常使用format()方法或f-string来控制打印位数。例如: value=3.14159print("Formatted value: {:.2f}".format(value))# 保留两位小数 1. 2. 你还可以通过配置文件来管理输出格式,下面是一个配置文件的模板,使用YAML格式: print_config:decimal_places:2format_style:"f-string"output_type:"con...
x = 1234.56789#Two decimal places of accuracyprint(format(x,'0.2f'))#'1234.57'#Right justified in 10 chars, one-digit accuracyprint(format(x,'>10.1f'))#'1234.6'#Left justifiedprint(format(x,'<10.1f'))#'1234.6 '#Centeredprint(format(x,'^10.1f'))#1234.6#Inclusion of thousands separator...
# Let's assume we have a dataframe dfdf = pd.DataFrame({ 'A': [1, 2, 3, 4], 'B': [0.1, 0.2, 0.3, 0.4]})# We want to format the values in column B as text with two decimal placesdf['C'] = df['B'].apply(lambda x: '{:.2f}'.format(x))print(df)SUBST...
The format() function can handle various data types, including floats, integers, and strings. The code below prints 345.69. # Example number to be rounded number = 345.68776 # Using format() to round to 2 decimal places formatted_number = "{:.2f}".format(number) print(formatted_number) ...
with a colon to separate it from the field name that we saw before. After thecolon, we write “.2f”. This means we’re going to format afloat numberand that there should betwo digits after the decimal dot. So no matter what the price is, our function always prints two decimals. ...
>>> num = 4.123956>>> f"num rounded to 2 decimal places = {num:.2f}"'num rounded to 2 decimal places = 4.12'如果不做任何指定，那么浮点数用最大精度 >>> print(f'{num}')4.123956 格式化百分比数 >>> total = 87>>> true_pos = 34>>> perc = true_pos / total>>> perc0....