Use string slicing to remove the first and last characters from a string, e.g. `result = my_str[1:-1]`.
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: ...
Replace the last N characters in a String using str.rsplit() Replace characters at the end of a String using str.rpartition() # Replace the last character in a String in Python Use string slicing to replace the last character in a string, e.g. my_str[:-1] + '_'. The slice of...
The left edge of the first character in the string is numbered 0. We can slice from this location with the index i. The right edge of the last character of a string of n characters has the index n. We can slice from this location with the index j. For example:Python Copy ...
We apply a loop on all the string characters, starting from the first index 0 to the last index (N-1), and remove the 3 characters at the end of the string. The code is: my_str="python string"n=3final_str=""foriinrange(len(my_str)-n):final_str=final_str+my_str[i]print(...
These techniques allow you to retrieve an individual character or range of characters from a string. In this guide, we discuss how to remove the last character from a Python string. We’ll walk through an example of removing the last character from a string so you can figure out how you ...
So Python returns a new string to me. 我也可以使用负索引进行切片。 I can also do slicing using negative indices. 例如,如果我键入S,减去3,Python将给出该序列中的最后三个字符,即h、o和n。 So for example, if I type S, minus 3, Python will give me the last three characters in that sequ...
must be a string, whose characters will be mapped to None in the result. Docstring: S.translate(table) -> str Return a copy of the string S in which each character has been mapped through the given translation table. The table must implement ...
word[42] # the word only has 6 characters Traceback (most recent call last): File "", line 1, in IndexError: string index out of range 但是,切片中的越界索引会被自动处理: > word[4:42] 'on' word[42:] '' Python 中的字符串不能被修改,它们是 immutable 的。因此,向字符串的某个索引...
# access characters in string# declare, assign stringstr="Hello world"# print complete stringprint"str:",str# print first characterprint"str[0]:",str[0]# print second characterprint"str[1]:",str[1]# print last characterprint"str[-1]:",str[-1]# print second last characterprint"str[...