In addition, we canaccess just a specific characteror aslice of charactersof a string. We might want to do this, for example, if we have a text that’s too long to display and we want to show just a portion of it. Or if we want to make an acronym by taking the first letter of...
257 258 """ 259 return s.strip(chars) 260 261 # Strip leading tabs and spaces 262 def lstrip(s, chars=None): 263 """lstrip(s [,chars]) -> string 264 265 Return a copy of the string s with leading whitespace removed. 266 If chars is given and not None, remove characters in ...
defget_last_three_characters(string):returnstring[-3:]# 测试示例string1="Hello"string2="Mermaid"string3="Python"last_three1=get_last_three_characters(string1)last_three2=get_last_three_characters(string2)last_three3=get_last_three_characters(string3)print(f"The last three characters of '{s...
string="Hello, World!"last_char=string[-1]second_last_char=string[-2]third_last_char=string[-3]print("最后一个字符:",last_char)print("倒数第二个字符:",second_last_char)print("倒数第三个字符:",third_last_char) 1. 2. 3. 4. 5. 6. 7. 8. 以上代码输出结果如下: 最后一个字符: ...
>>>a='abcdefghijklmnopqrstuvwxyz'>>>a'abcdefghijklmnopqrstuvwxyz'>>>a[0]'a'>>>a[3]'d'>>>a[26-1]'z'>>>a[-1]'z'>>>a[-26]'a'>>>a[-30]Traceback(most recent call last):File"<pyshell#91>",line1,in<module>a[-30]IndexError:string index outofrange ...
@propertydef string(self):return "".join(self.characters) 这使得我们的测试变得更简单: >>> print(d.string)helloworld 这个框架很容易扩展,创建和编辑完整的纯文本文档(尽管可能会有点耗时!)现在,让我们将其扩展到适用于富文本的工作;可以具有粗体、下划线或斜体字符的文本。
[,deletechars]) -> string|| Return a copy of the string S, where all characters occurring...
2. Get Substring of a String using Slicing Slicing is a built-in Python feature that allows you to extract a substring from a string by specifying its start and end indices. The resultingstringwill include all the characters from the start index up to, but not including, the end index. ...
my_str = 'apple' # ✅ Remove the first and last characters from a string result_1 = my_str[1:-1] print(result_1) # 👉️ 'ppl' # ✅ Remove the first character from a string result_2 = my_str[1:] print(result_2) # 👉️ 'pple' # ✅ Remove the last character fr...
python基础的随笔更多是偏向于我个人代码实现和讨论,所以对于知识点不会有一个比较输入的说明,知识点可能会在之后系列再做总结。如果后面总结知识点我大概率会手打,截图属实起不到加强记忆的效果,如果可以我会尽量做一个知识点目录(同参考课程进度) 概述