# 科学计数法large_number = 1234567890123scientific = "{:.2e}".format(large_number)print(scientific) # 输出: 1.23e+12# 组合使用def format_number(num): if abs(num) >= 1e6: return "{:.2e}".format(num) return "{:,.2f}".format(num)百分比格式化 在统计分析中，百分比的展示也...
'f')# 输出结果print(f"原始科学计数法数字:{scientific_number}")print(f"转换为字符串 (str):{string_representation}")print(f"转换为字符串 (format):{formatted_string}")
示例：value = 12345.6789scientific = "{:.2e}".format(value)print(scientific)程序输出：1.23e+04注意事项：format函数通过占位符 {} 来指定要替换的位置，可以使用位置参数或关键字参数来传递要格式化的值。可以在占位符中使用索引或字段名来引用要替换的值。可以通过格式规范语法来指定值的显示格式，如小数位...
步骤1:将待输出的数值转换为科学计数法的字符串表示 # 将数值转换为科学计数法字符串scientific_notation_str="{:e}".format(number) 1. 2. 上述代码中,我们使用"{:e}".format(number)将给定的数值number转换为科学计数法字符串表示。 步骤2:格式化科学计数法字符串,使其符合预期的输出格式 # 设置科学计数法...
5.2) 'Scientific: 5.200000e+00; Fixed-point: 5.200000; General format: 5.2' >>> 'Correct answers: {:.2%}'.format19/22) 'Correct answers: 86.36%' 类型 > import datetime >>> d = datetime.datetime(2010, 7, 4, 12, 15, 58) >>> '{:%Y-%m-%d %H:%M:%S}'.formatd) '...
Python adds together the binary approximations for 0.1 and 0.2, which gives a number that is not the binary approximation for 0.3.If all this is starting to make your head spin, don’t worry! Unless you’re writing programs for finance or scientific computing, you don’t need to worry ...
原文出处:https://www.crifan.com/python_string_format_fill_with_chars_and_set_alignment/ 【问题】 想要获得这样的效果: ——-abc ——abcd —–abcde 【解决过程】 1.折腾半天,终于从P
'fmin', 'fmod', 'format_float_positional', 'format_float_scientific', 'format_parser', 'frexp', 'frombuffer', 'fromfile', 'fromfunction', 'fromiter', 'frompyfunc', 'fromregex', 'fromstring', 'full', 'full_like', 'fv', 'generic', 'genfromtxt', 'geomspace', 'get_array_wrap',...
:eTry itScientific format, with a lower case e :ETry itScientific format, with an upper case E :fTry itFix point number format :FTry itFix point number format, in uppercase format (showinfandnanasINFandNAN) :gGeneral format :GGeneral format (using a upper case E for scientific notat...
Both notations can optionally have a plus sign (+) or a minus sign (-), while the decimal one can additionally include the exponent in case you want to use the scientific notation:Python >>> Fraction("-2e-3") Fraction(-1, 500) >>> Fraction("+2/1000") Fraction(1, 500) ...