string.contains(substring) 1. 其中,string是需要被检查的字符串,substring是要检查是否包含在string中的子字符串。如果substring在string中存在,则返回True,否则返回False。 代码示例 下面我们通过一个简单的示例来演示contains方法的用法: # 定义一个字符串string="Hello, World!"# 检查字符串是否包含"Hello"result=...
string.contains(substring) 1. 其中,string是要检查的字符串,substring是要查找的子字符串。 contains函数将返回一个布尔值,表示是否找到了子字符串。如果找到了,返回True;如果没有找到,返回False。 使用contains进行匹配查询 下面的示例演示了如何使用contains函数进行匹配查询。 # 创建一个字符串string="Hello, World!
substring = "Hello" if string.contains(substring): print("字符串包含子字符串") else: print("字符串不包含子字符串") 复制代码 运行结果为: 字符串包含子字符串 复制代码 请注意,contains()方法在Python中并不存在。如果要检查一个字符串是否包含另一个字符串,可以使用in关键字。使用方法如下: substring i...
Get Your Code:Click here to download the free sample codethat you’ll use to check if a string contains a substring. Take the Quiz:Test your knowledge with our interactive “How to Check if a Python String Contains a Substring” quiz. You’ll receive a score upon completion to help you...
contains‘子字符串方法？EN如果这只是一个子串搜索，你可以使用string.find("substring")。
Another way to check if a string contains a substring in Python is by using thefind()method. It returns the index of the first occurrence of the substring within the string. If the substring is not found, it returns -1. Here’s an example: ...
The python str class has a __contains__() method that will check if a python string contains a substring. It will return true if it’s found and will return false if it’s not. You will notice that the method name is wrapped in two underscores. This prevents this method from being ...
contains方法返回一个布尔值,如果目标字符串出现在原始字符串中,则返回True,否则返回False。 下面是使用contains方法的示例代码: ```python string = "Hello, world!" substring = "world" if substring in string: print("Substring is present in the string.") else: print("Substring is not present in ...
substring = string1[0:5] # 结果为 'Hello' (6)长度(Length) 使用len()函数可以获取字符串的长度。 length_of_string = len(combined_string) # 结果为 13 (7)大小写转换 使用字符串的方法可以将字符串转换为大写或小写。 uppercase_string = combined_string.upper() # 结果为 'HELLO, WORLD!' ...
A very simple concept is used in slicing. When a string is indexed using a pair of offsets separated by a colon (:), Python returns a new string object that contains the section identified by the offset pair. In the offset pair, the left offset, lower bound, is inclusive, and the ri...