# 判断子字符串是否在文本中contains=substringintext# 输出包含结果ifcontains:print(f"文本中包含子字符串:'{substring}'")else:print(f"文本中不包含子字符串:'{substring}'") 1. 2. 3. 4. 5. 6. 7. 8. 在这段代码中: contains是一个布尔值,表示substring是否存在于text中。 使用if语句来判断,并...
text = "Python is a great programming language" substring = "Python" if substring in text: print("The substring is in the text") else: print("The substring is not in the text") 在这个例子中,我们使用in关键字检查text字符串中是否包含substring字符串。如果包含,则输出"The substring is in the...
text="Hello, world!"sub_str="world"ifsub_strintext:print("Text contains the substring")else:print("Text does not contain the substring") 1. 2. 3. 4. 5. 6. 7. 这里,我们使用 in 运算符判断字符串text是否包含子字符串sub_str。如果包含,则输出 “Text contains the substring”,否则输出 “...
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...
if "a" in text: index = text.index("a") substring = text[index+1:] print(substring) else: print("Character 'a' not found in the string.") 以上代码会先判断字符a是否存在于字符串中,如果存在则执行获取子字符串的操作,否则输出提示信息。 总结起来,使用Python中的字符串切片操作和相关方法,...
Using the Python string contains method 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...
if "CA" in state: print("The string contains 'CA'") else: print("The string does not contain 'CA'") In this example, theinoperator checks if the substring"CA"is present in thestatestring variable, which represents a U.S. state name. The code will output “The string contains ‘CA...
Return the number of occurrences of substring sub in string s[start:end]. Optional arguments start and end are interpreted as in slice notation. """ return s.count(*args) # Find substring, return -1 if not found def find(s, *args): ...
python没有substring函数,因为直接使用str[start:end]就可以啦。字母处理 全部大写:str.upper()全部小写:str.lower()大小写互换:str.swapcase()首字母大写,其余小写:str.capitalize()首字母大写:str.title()print '%s lower=%s' % (str,str.lower())...