参考资料:https://www.geeksforgeeks.org/python-finding-strings-with-given-substring-in-list/ 方法1: In [1]: data=["北京市","福建省","河南省","杭州市"] In [2]: word="福建" In [3]: [iforiindataifwordini] Out[3]: ['福建省'] 方法2: In [4]: data=["北京市","福建省","...
You can slice a string in Python by using the syntax string[start:end] to extract a substring. You concatenate strings in Python using the + operator or by using the .join() method.You’ll explore creating strings with string literals and functions, using operators and built-in functions wi...
Naturally, it performs the same search as index() and returns the index of the start of the substring within the parent string: print(fullstring.find(substring)) # 1 Regular Expressions (RegEx) Regular expressions provide a more flexible (albeit more complex) way to check strings for pattern...
Below are listed the string methods which both 8-bit strings and Unicode objects support. Note that none of these methods take keyword arguments. In addition,Python’s strings support the sequence type methods described in the Sequence Types — str, unicode, list, tuple, buffer, xrange section....
How can you generalize a substring check to ignore case sensitivity?Show/Hide You now know how to pick the most idiomatic approach when you’re working with substrings in Python. Keep using the most descriptive method for the job, and you’ll write code that’s delightful to read and quick...
stringexample.find("ki") The output for this will be0. The reason behind the output is – this method returns the lowest index value when the substring is found. If it returns-1that means the string does not contain that substring. ...
S.find(sub[, start[, end]]) -> int --> 从左开始在字符串S中查找sub字符串,其中起始位start,结束位end,默认为整个字符串,返回找到的字符串的开头索引位,如果没有找到,那么会返回-1 S.rfind(sub[, start[, end]]) -> int --> 从右开始在字符串S中查找sub字符串,其中起始位start,结束位end,默...
print('subString: ', subString) Output: originalString: vectorAcademy subString: vectorAcad Explanation: Firstly, an original string is created. Then, a slicing operator is used in which the endIndex syntax is passed. In the final output, we find that a substring is generated which starts from...
In this example, we attempt to find the substring “New York” within thetextstring. If “New York” is found, its starting index is printed. If it’s not found, the code catches theValueErrorexception and prints a message indicating that the substring is not present in the text. ...
string = "Python Programming" substring = string[7:14] # 从索引7开始至索引14前结束 print(substring) # 输出:"Programming" # 切片步长为-1,反转字符串 reversed_substring = string[::-1] print(reversed_substring) # 输出:"gnimmargorP nohtyP" 2.2 高级字符串操作 2.2.1 Unicode与编码问题 在处理...