s contains a=Trues contains A=Falses contains X=False Copy 2. Usingfind()to check if a string contains another substring We can also usestring find() functionto check if string contains a substring or not. This function returns the first index position where substring is found, else return...
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...
方法2:使用find函数实现contains的功能 s = "This be a string" if s.find("is") == -1: print "No 'is' here!" else: print "Found 'is' in the string."
class NoisyString(str): def __contains__(self, other): print('testing if "{0}" in "{1}"'.format(other, self)) return super(NoisyString, self).__contains__(other) ns = NoisyString('a string with a substring inside') 1. 2. 3. 4. 5. 6. 现在: >>> 'substring' in ns test...
string="Hello, world!"if"world"instring:print("The string contains 'world'.")else:print("The string does not contain 'world'.") 1. 2. 3. 4. 5. 6. 在上面的代码中,我们首先定义了一个字符串string,并判断其中是否包含子字符串"world"。如果包含,则打印"The string contains ‘world’.“;否...
Python中的contains()方法用于检查一个字符串是否包含另一个字符串,并返回一个布尔值。其使用方法如下: string.contains(substring) 复制代码 其中,string是要检查的字符串,substring是要检查的子字符串。 以下是一个示例: string = "Hello, World!" substring = "Hello" if string.contains(substring): print("...
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 ...
Let’s check our first character string my_string1: print(any(c.isalpha()forcinmy_string1))# Check if letters are contained in string# True As you can see, the logical value True has been returned, i.e. our first example string contains alphabetical letters. ...
string = "Hello, world!" if string.find("world") != -1: (tab)print("String contains 'world'")结合start和end参数使用find函数进行字符串片段的提取。示例：提取字符串中的某个子字符串。string = "Hello, world! world is beautiful." start = 7 end = 12 extract = string[start:end] print...
string = "This contains a word" if " is " in (" " + string + " "): print("Found...