firstName ='Bob'lastName='Dylan'print('你的名字是%s, 你的姓是%s'% (firstName, lastName)) 对于string, list等类型的变量,一律可用%s代替。 对于int类型,用%d 对于float类型,用%f 如果需要对float类型的变量进行小数点后位数的控制,则使用%.<number of digits>f。如 pai = 3.14159print('%.2f'%pai...
print("This number in scientific notation: %e" % 1234567) print("My chances are %%%d" % 100) # 'My chances are %100' 1. 2. 3. 4. 5. 6. 注意:%的方式虽然可以实现字符串格式化,但在 Python 3.6 以后,官方更推荐使用 f-string(格式化字符串)的方式,例如: name = "Alice" age = 25 pri...
We can include more parameters within the curly braces of our syntax. We’ll use the format code syntax{field_name:conversion}, wherefield_namespecifies the index number of the argument to thestr.format()method that we went through in thereordering section, andconversionrefers to the conversion...
format(0xae123fcc8ab2) '0xae12_3fcc_8ab2' If you try to specify grouping_option with any presentation type other than those listed above, then your code will raise an exception.The precision Component The precision component specifies the number of digits after the decimal point for ...
Concatenate any number of strings. The string whose method is called is inserted in between each given string. The result is returned as a new string. Example: '.'.join(['ab', 'pq', 'rs']) -> 'ab.pq.rs' 连接任意数量的字符串。
3 = 14 * 3 = 124 / 3 = 1.334 % 3 = 14 // 3 = 14 ** 3 = 64# Strings and numbersradius = 10pi = 3.14area = pi * radius ** 2formated_string = 'The area of a circle with a radius {} is {:.2f}.'.format(radius, area) # 2 digits after decimalprint(formated_string)...
Format String Syntax Replacement Fields Syntax 替代字段特点 standard format specifier 对齐(align) 符号(sign) \#号选项 千位分隔符(thousand separator) 最小域宽(field width) 精度(precision) 类型(type) 什么是str.format呢? str.format()就是字符串类型的一个函数,它用来执行字符串格式化操作。
~""" 34 printable = digits + letters + punctuation + whitespace 35 36 # Case conversion helpers 37 # Use str to convert Unicode literal in case of -U 38 l = map(chr, xrange(256)) 39 _idmap = str('').join(l) 40 del l 41 42 # Functions which aren't available as string ...
Finally, you use the precision option to display a floating-point number using different precisions. You use two, four, and eight digits after the decimal separator, respectively. Unfortunately, the modulo operator doesn’t support the string formatting mini-language, so if you use this tool to...
In the third statement,{:8.3f}truncates the decimal part into 3 places rounding off the last 2 digits. And, the number, now 12.235, takes a width of 8 as a whole leaving 2 places to the left. If you want to fill the remaining places with zero, placing a zero before the format sp...