defreplace_numbers(string,replacement):result=''forcharinstring:ifchar.isdigit():result+=replacementelse:result+=charreturnresult old_string='I have 3 cats and 2 dogs'new_string=replace_numbers(old_string,'X')print(new_string) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 运行上面的...
a = '&#' to_replace = ['&', '#'] for char in to_replace: a = a.replace(char, "\\"+char) print(a) >>> \&\# Share Improve this answer Follow answered Feb 25, 2020 at 14:25 Tiago Wutzke de Oliveira 5122 bronze badges Add a comment 0...
replace方法简介 Python中的replace方法用于将字符串中的指定子串替换为新的子串。它的基本语法如下: new_string=old_string.replace(old_substring,new_substring) 1. 其中,old_string是原始字符串,old_substring是需要替换的子串,new_substring是替换后的子串。replace方法会返回一个新的字符串new_string,原始字符串ol...
python string = "Hello, World!" new_string = "" for char in string: if char == ",": new_string += "." else: new_string += char print(new_string) 输出结果为: Hello. World! 在上述示例中,我们使用for循环遍历字符串中的每个字符,如果当前字符为",",则将其替换为".",否则将字符添加到...
Let’s consider a scenario where we want to replace specific characters in a string with predefined replacements. Here’s a concise Python script using thestr.replacemethod: defreplace_multiple_chars(input_string,replace_dict):forold_char,new_charinreplace_dict.items():input_string=input_string.re...
代码语言:python 代码运行次数:0 复制Cloud Studio 代码运行 new_string = old_string.replace(old, new) 其中,old_string是原始字符串,old是要被替换的旧字符串,new是用于替换的新字符串。方法返回一个新的字符串,其中所有匹配的旧字符串都被替换为新字符串。
# Replace multiple characters in a String in Python Use multiple calls to the str.replace() method to replace multiple characters in a string. The str.replace() method returns a new string with the specified substring replaced and can be called as many times as necessary. main.py string =...
String 类提供了一个内置的方法 replace(),可用于将旧字符替换为新字符。replace() 方法把字符串中的 old(旧字符串) 替换成 new(新字符串),如果指定第三个参数 max,则替换不超过 max 次。str.replace(old, new[, max])str1 = "i love python"char1 = {'i': 'I', 'l': 'L', 'p': '...
REPLACE(string, old_char, new_char) 其中: - string:要进行替换操作的字符串; - old_char:要被替换的特定字符; - new_char:替换后的字符或字符串。 二、使用REPLACE函数替换字符串中的特定字符 下面以Python编程语言为例,演示如何使用REPLACE函数替换字符串中的特定字符。 ```python #示例代码一 text = "...
defreplace_multiple_chars(input_string, replacements): forold_char, new_charinreplacements.items(): input_string=input_string.replace(old_char, new_char) returninput_string # 示例用法 original_string="Hello World!" replacements={ "H":"J", ...