Python f-stringis a powerful and flexible string formatting method introduced in Python 3.6. Unlike older formatting techniques such as%-based formatting andstr.format(), f-strings are faster, more readable, and less prone to errors. They simplify string manipulation while maintaining excellent perfo...
fill ::= <any character> align ::= "<" | ">" | "=" | "^" sign ::= "+" | "-" | " " width ::= digit+ grouping_option ::= "_" | "," precision ::= digit+ type ::= "b" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" | "n" | "o" | ...
fill ::= <anycharacter> align ::="<"|">"|"="|"^"sign ::="+"|"-"|" "width ::= digit+ grouping_option ::="_"|","precision ::= digit+type::="b"|"c"|"d"|"e"|"E"|"f"|"F"|"g"|"G"|"n"|"o"|"s"|"x"|"X"|"%" 各种对齐选项的含义如下: sign选项仅对数字类...
10 100 1000Python f-string justify string By default, the strings are justified to the left. We can use the> character to justify the strings to the right. The >character follows the colon character. justify.py#!/usr/bin/pythons1 ='a's2='ab's3='abc's4='abcd'print(f'{s1:>10}')...
7.3 f-string f-string是2015年python 3.6 根据PEP 498新添加的一种字符串格式化方法,f-string实际上是在运行时计算的表达式,而不是常量值。在Python源代码中,f-string是一个文字字符串,前缀为’f’,其中包含大括号内的表达式。表达式会将大括号中的内容替换为其值。例如 ...
(1)s:string,字符串;(2)d:decimal integer,十进制数;(3)i:integer,用法同%d;(4)u:unsigned integer,无符号十进制数;(5)f:float,浮点数(默认保留小数点后6位);(6)F:Float,浮点数(默认保留小数点后6位);(7)e:exponent,将数字表示为科学计数法(小写e,默认保留小数点后6位);(8)E:Exponent,将数字表...
[type] fill ::= <any character> align ::= "<" | ">" | "=" | "^" sign ::= "+" | "-" | " " width ::= digit+ grouping_option ::= "_" | "," precision ::= digit+ type ::= "b" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" | "n" | ...
(1) s: string, 字符串; (2) d: decimal integer, 十进制数; (3) i: integer, 用法同%d; (4) u: unsigned integer, 无符号十进制数; (5) f: float, 浮点数(默认保留小数点后6位); (6) F: Float, 浮点数(默认保留小数点后6位); (7) e: exponent, 将数字表示为科学计数法(小写e, 默认...
Replacement field: each of the curly brace components (between{and}) in an f-string is called a replacement field Conversion field: this "converts" the object within a replacement field using a specific converter and it's preceded by an exclamation mark (!) ...
test="Python Programming"print("String: ",test)# First one character first_character=test[:1]print("First Character: ",first_character)# Last one character last_character=test[-1:]print("Last Character: ",last_character)# Everything except the first one character except_first=test[1:]print...