ResultSubstringSource StringResultSubstringSource Stringremove_substring(source, substring)resultprint(result) 在上述序列图中,我们定义了三个参与者:A表示源字符串,B表示需要去掉的子字符串,C表示结果。通过remove_substring()函数,A向B发送了一个消息,请求去掉B所代表的子字符串。B处理完毕后,将结果返回给A。最...
通过使用re模块中的sub()函数,我们可以使用正则表达式来实现字符串的替换和去除。 importre# 使用re模块的sub()函数去除指定子字符串defremove_substring(text,substring):returnre.sub(substring,"",text)# 示例text="Python is a powerful programming language."substring="powerful "new_text=remove_substring(text...
Remove a Substring from a String Using thereplace()Method Thereplace()method takes strings as arguments, so you can also replace a word in string. Declare the string variable: s='Helloabc' Copy Replace a word with an empty string: print(s.replace('Hello','')) Copy The output is: Outp...
test_str = "this_is_a_test_str" # 期望得到“this_is_a_test”,实际结果也是“this_is_a_test” re.sub("_str$","",test_str) 参考: https://stackoverflow.com/a/1038845 https://www.geeksforgeeks.org/python-remove-the-given-substring-from-end-of-string/...
The index method can’t return a number because the substring isn’t there, so we get a value error instead: In order to avoid thisTraceback Error, we can use the keywordinto check if a substring is contained in a string. In the case of Loops, it was used for iteration, whereas in...
从字符串中删除子字符串(Remove substring from string) String replace() function arguments is string. Let’s see how to remove a word from a string. 字符串replace()函数参数是字符串。 让我们看看如何从字符串中删除单词。 代码语言:javascript ...
repeated_string = 'a' * 5 # 结果为 'aaaaa' (3) in的用法 使用in关键字可以检查一个字符串是否包含另一个子字符串。 substring = 'Python' substring in string2 (4)索引(Indexing) 使用方括号和索引可以获取字符串中特定位置的字符。索引从 0 开始。
substring [ 'sʌb striŋ] 子字符串 append [ə'pend] 添加 add [ æd] 增加 insert [in'sə:t] 插入 delete [di'li:t] 删除 replace [ri'pleis] 代替,取代,更换 update [ ʌp'deit] 更新 create [ kri'eit ] 创造,创作 ...
(1,2,3,sep='@')#1@2@3#输出多个字符串print("Hello world","Python","HaHa",sep='&')#Hello world&Python&HaHa#注意:如果直接输出字符串,而不是用对象表示的话,可以不使用逗号print("Hello world""Python""HaHa",sep='*')#Hello worldPythonHaHa#输出多个变量a = 1b= 2c= 3print(a,b,c,...
In this tutorial, you'll learn how to remove or replace a string or substring. You'll go from the basic string method .replace() all the way up to a multi-layer regex pattern using the sub() function from Python's re module.