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 o
# 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...
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'. ...
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...
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...
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. ...
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" ...
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 ...