代码执行代码执行str1 = 'Hello, World!'last_character = str1[-1]输出 last_character 关系图 下面是一个使用mermaid语法绘制的关系图,展示字符串、索引和最后一位字符之间的关系: erDiagram STRING }|-- 0..* { CHARACTER : 包含 STRIMG }|-- 0..* { INDEX : 使用 INDEX }|-- 1 { CHARACTER :...
下面是一个简单的Python字符串类的类图: String- str: str+__init__(str)+get_last_character() : str 通过上面的代码示例和图示,相信读者已经对如何使用Python来判断字符串的最后一个字符有了一定的了解。这些方法简单直接,易于掌握,在实际应用中也非常实用。希望本文对读者有所帮助,谢谢阅读!
We’re not changing the underlying string that was assigned to it before. We’re assigning a whole new string with different content. In this case, it was pretty easy to find the index to change as there are few characters in the string.How are we supposed to know which character to ch...
last_character = string[-1] print(last_character) # 输出 “o” “` 2. 获取倒数第二个字符: “`python string = “Hello” second_last_character = string[-2] print(second_last_character) # 输出 “l” “` 3. 切片操作: “`python string = “Hello World” substring = string[-5:-1] ...
python之Character string 阅读目录 1、python字符串 字符串是 Python 中最常用的数据类型。我们可以使用引号('或")来创建字符串,l Python不支持单字符类型,单字符也在Python也是作为一个字符串使用。 >>> var1 ='hello python'#定义字符串>>>print(var1[0])#切片截取,从0开始,不包括截取尾数h>>>print(...
if last_occurrence == -1: print("Character 'z' not found in the string.") else: print("Last occurrence of 'z' is at index:", last_occurrence) # 输出:Character 'z' not found in the string. ``` 4. 使用循环和条件语句查找多个字符的最后出现位置 ...
str = 'Antarctica is really cold.' a = len(str) print('length of str ', a) #last character with the help of length of the string print('str[a] ', str[a-1]) #last character with the help of indexing print('str[-1] ',str[-1]) 输出: str 26str [a]的长度。str [-1]。
word[-1]# Last character. 输出为: Output 'n' 同样地,其他负索引会从相应的位置返回字符: Python word[-2]# Second-to-last character. 输出为: Output 'o' 切片 Python 既支持索引,也支持切片,前者从字符串中提取单个字符,后者提取子字符串(或切片)。 若要进行切片,需采用“开始:结束”格式指示范围。
string containing all characters considered printable 19 20 """ 21 22 # Some strings for ctype-style character classification 23 whitespace = ' \t\n\r\v\f' 24 lowercase = 'abcdefghijklmnopqrstuvwxyz' 25 uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 26 letters = lowercase + uppercase 27 ascii_...
my_string="Hello, World!" last_character=my_string[-1] print(last_character)# 输出:"!" 在上述示例中,我们创建了一个包含字符串内容的变量my_string。然后,通过将索引值设为-1来访问字符串最后一个字符,并将其赋值给变量last_character。最后,我们使用打印语句输出了变量的值。 需要注意的是,字符串也是...