defcheck_string_in_file(file_path,target_string):withopen(file_path,'r')asfile:forlineinfile:iftarget_stringinline:returnTruereturnFalse# 示例使用file_path='sample.txt'target_string='hello world'ifcheck_string_in_file(file_path,target_string):print(f'The file "{file_path}" contains the st...
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...
def check_string(string, char): if char in string: return True else: return False 上述代码定义了一个名为check_string的函数,接受两个参数:string表示待检查的字符串,char表示要检查的特定字符。函数内部使用in关键字来判断char是否在string中,如果存在则返回True,否则返回False。 这个方法可以用于检查一...
When working with text data in Python, a team member was checking whether a string contains a particular substring. I suggested a few methods that Python provides to do this. Let me show you different methods tocheck if a Python string contains a substringusing some real-time examples. To c...
# 测试用例1:输入的字符串含有空格input_string_1="Hello World"print(check_string_contains_space(input_string_1))# 输出:True# 测试用例2:输入的字符串不含有空格input_string_2="HelloWorld"print(check_string_contains_space(input_string_2))# 输出:False# 测试用例3:输入的字符串含有制表符和换行符inpu...
You can use the string isalnum() function to check if a string contains only letters (that is, alphabets) and/or numbers in Python.
Python 字符串操作,如string替换、删除、截取、复制、连接、比较、查找、包含、大小写转换、分割等 代码语言:javascript 复制 deftest2():# 复制字符串 str1="ithomer.net"str2=str1 str1="blog"print str1,str2 # blog ithomer.net # 连接字符串 ...
Let’s check our first character string my_string1:print(any(c.isalpha() for c in my_string1)) # Check if letters are contained in string # TrueAs you can see, the logical value True has been returned, i.e. our first example string contains alphabetical letters....
element_to_check= 3ifcontains_element(my_list, element_to_check):print(f"{element_to_check} 存在于列表中。")else:print(f"{element_to_check} 不存在于列表中。")11. 使用 index() 方法 index() 方法能够返回指定元素的索引值,如果元素不存在,则抛出 ValueError。可以通过捕获异常的方式判断元素是否...
The Python Debugger extension then creates and opens alaunch.jsonfile that contains a pre-defined configuration based on what you previously selected, in this case,Python File. You can modify configurations (to add arguments, for example), and also add custom configurations. ...