character_to_find : b Character bispresent at2 方法2:Using find 如果字符不存在,则此方法返回-1 # Python3 code to demonstrate # to find first position of character #ina givenstring# Initialisingstringini_string='abcdef'ini_string2='xyze'# Character to find c="b"# printing initialstringand ...
与find()方法类似,index()方法也可以用来查找字符或字符串在文本中的位置。与find()方法不同的是,如果未找到指定字符或字符串,index()方法会抛出ValueError异常。 代码示例: string="Hello, world!"char="o"try:position=string.index(char)print("The position of '{}' in the string is: {}".format(char...
but what I find is both of the functions find() and index() returns first position of a character. So, this can be solved doing this: def charposition(string, char): pos = [] #list to store positions for each 'char' in 'string' for n in range(len(string)): if string[n] =...
使用 find()>>> myString = 'Position of a character'>>> myString.find('s')2>>> myString....
format(ini_string1)) 复制 输出: initial_string : abcdef character_to_find : b Character b is present at 2 复制 方法#2:使用查找如果字符不存在,此方法返回 -1。 Python3 # Python3 code to demonstrate # to find first position of character # in a given string # Initializing string ini_...
string = "Hello, World!" # 使用enumerate()函数获取每个字符的位置和字符本身 for index, char in enumerate(string): print(f"Character '{char}' is at position {index}") 输出结果为: 代码语言:txt 复制 Character 'H' is at position 0 Character 'e' is at position 1 Character 'l' is a...
I want to include a function in my code that can return the position in the string that the last letter in the string can be found. e.g: if the input were " hello world k ...^&", the function could return 14, (since that would be the position of the character k...
Create a String in Python Access Characters in a String in Python Find Length of a String in Python Find a Character in a String in Python Find Frequency of a Character in a String in Python Count the Number of Spaces in a String in Python ...
成员关系操作符:in,not in 对于字符串,就是判断字符是否在字符串中(其实这个字符也是一个字符串对象);对于列表和元组,就是判断对象是否属于该对象序列,语法为:obj [not] in 序列 连接操作符:+ 从节约内存的角度去考虑,对于字符串,建议使用join,对于列表,建议使用extend(). ...
word[5]# Character in position 5. 输出为: Output 'n' 索引也可以是负数,表示计数从字符串的末尾开始。 由于 -0 相当于 0,因此负索引从 -1 开始: Python 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: ...