last_occurrence = s.rfind(char) if last_occurrence == -1: print(f"Character '{char}' not found in the string.") else: print(f"Last occurrence of '{char}' is at index:", last_occurrence) # 输出: # Last occurrence of 'o' is at index: 27 # Last occurrence of 'l' is at ind...
# 从后往前查找字符串deffind_last_occurrence(string,substring):n=len(substring)foriinrange(len(string)-n,-1,-1):ifstring[i:i+n]==substring:returnireturn-1 1. 2. 3. 4. 5. 6. 7. 上述代码中,string是待查找的字符串,substring是待查找的子字符串。通过循环遍历,分别比较从末尾开始的子字符...
Hello Python!"substring="Hello"try:last_occurrence=text.rindex(substring)print("The last occurrence of '{0}' is at position {1}".format(substring,last_occurrence))exceptValueError:print("'{0}' is not found in the string".format(substring)) 1. 2. 3. 4. 5. 6. 7. 输出结果: The las...
Split the string at the last occurrence of sep, and return a 3-tuple containing the part before the separator, the separator itself, and the part after the separator. If the separator is not found, return a 3-tuple containing two empty strings, followed by the string itself. >>>a ='ab...
The example replaces the first occurrence of the word 'fox'. $ ./replace_first.py There is a wolf in the forest. The fox has red fur. Python replace last occurrence of stringIn the next example, we replace the last occurrence of word 'fox'. ...
在 Python 中，我们有一些字符串内置函数，如 rstrip（），可以从字符串中删除最后一个指定的字符。切片...
9) string.punctuation 标点符号 String of ASCII characters which are considered punctuation characters in the C locale. 10) string.printable 所有可打印的字符集,包含数字,字母,标点空白符 String of characters which are considered printable. This is a combination of digits, letters, punctuation, and whi...
将String 变量转换为 float、int 或 boolean 向字符串填充或添加零的不同方法 去掉字符串中的 space 字符 生成N个字符的随机字符串 以不同的方式反转字符串 将Camel Case 转换为 Snake Case 并更改给定字符串中特定字符的大小写 检查给定的字符串是否是 Python 中的回文字符串 ...
Split string on last delimiter occurrence. Write a Python program to split a string on the last occurrence of the delimiter. Sample Solution: Python Code: # Define a string 'str1' containing a comma-separated list of characters.str1="w,3,r,e,s,o,u,r,c,e"# Split the string 'str1...
Python string partition Thepartitionmethod splits the sequence at the first occurrence of the given separator and returns a 3-tuple containing the part before the separator, the separator itself, and the part after the separator. Therpartitionmethod splits the sequence at the last occurrence of ...