2、通过str.join()方法拼接 1 2 3 >>> strlist=['Hello',' ','World','!'] >>> ''.join(strlist) 'Hello World!' 这种方式一般常使用在将集合转化为字符串,''.join()其中''可以是空字符,也可以是任意其他字符,当是任意其他字符时,集合中字符串会被该字符隔开。 3、通过st
defjoin(self,ab=None,pq=None,rs=None):# real signature unknown; restored from __doc__""" 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']...
1. 小规模拼接（如少于100次）：用+=或+，代码简洁无压力。示例：拼接URL参数、日志前缀。2. 循环或大规模拼接：优先用join()，内存和速度双赢。示例：处理CSV文件、生成SQL语句。3. 变量嵌入较多时：直接用f-strings，告别“字符串地狱”。示例：动态生成HTML模板、错误消息。##五、避坑指南• 别在循环中用...
2、通过str.join()方法拼接 strlist=['Hello',' ','World','!'] print(''.join(strlist)) 输出结果:Hello World! 这种方式一般常使用在将集合转化为字符串,”.join()其中”可以是空字符,也可以是任意其他字符,当是任意其他字符时,集合中字符串会被该字符隔开,例如: strlist=['Hello',' ','World',...
3. Transforming Strings There are a bunch of fun methods for transforming our string text. Among those that are more important to understand to make real-world applications we can find thelower(),upper(), strip(), count()andjoin()methods. ...
s="-"#joins elements of list1 by '-'#and stores in sting ss =s.join(list1)#join use to join a list of#strings to a separator sprint(s) 输出: 1-2-3-4 用空字符连接 #Python program to demonstrate the#use of join function to join list#elements without any separator.#Joining with...
Note: The join() method provides a flexible way to create strings from iterable objects. It joins each element of an iterable (such as list, string, and tuple) by a string separator (the string on which the join() method is called) and returns the concatenated string. Return Value from...
'join', 'ljust', 'lower', 'lstrip', 'maketrans', 'partition', 'removeprefix', 'removesuffix', 'replace', 'rfind', 'rindex', 'rjust', 'rpartition', 'rsplit', 'rstrip', 'split', 'splitlines', 'startswith', 'strip', 'swapcase', 'title', 'translate', 'upper', 'zfill'] >>...
一、join()方法 join()的作用和split()作用刚好相反,用于将一系列子字符串连接也来。 语法: 'str1'.join(str) 参数说明: str1: 分隔符,即放在多个字符串连接位置。 str:要连接的元素,可以是序列、字符串、元组、字典 #对列表进行操作(以'*'隔离符进行隔离) ...
list_of_strings = ['Hello', 'World', '!']joined_string = '-'.join(list_of_strings)print(joined_string) # 输出 "Hello-World-!"以上只是一些常用的字符串函数示例，Python还提供了其他许多字符串函数来处理和操作字符串。可以根据具体的需求，选择合适的字符串函数进行使用。