string=" "ifstring.isspace():print("String contains only spaces.")else:print("String does not contain only spaces.") 1. 2. 3. 4. 5. 方法三:使用正则表达式 可以使用正则表达式来判断字符串中是否包含空格字符。示例如下: importre string="Hello, World!"ifre.search(r'\s',string):print("Stri...
如果找到了子串,则输出"string1 contains string2";如果找不到,则输出"string1 does not contain string2"。 方法四:使用startswith和endswith方法 Python3的字符串对象还提供了startswith和endswith方法,用于判断一个字符串是否以另一个字符串开头或结尾。 string1="Hello, World!"string2="Hello"ifstring1.star...
=-1:print(f'"{str1}" contains "{str2}"')else:print(f'"{str1}" does not contain "{str2}"')index=str1.find(str3)ifindex!=-1:print(f'"{str1}" contains "{str3}"')else:print(f'"{str1}" does not contain "{str3}"') Copy Output: "I love Python Programming"contains"Pyth...
已解决:SyntaxError: expression cannot contain assignment, perhaps you meant “==“? 一、分析问题背景 在Python编程中,我们有时会遇到一个常见的语法错误提示:“SyntaxError: expression cannot contain assignment, perhaps you meant “==“?”。这个错误通常发生在尝试在表达式中进行赋值操作时,而不是进行比较操作。
my_substring = ‘string’ if (str.__contains__(string, my_substring)): print(‘String contains substring!’) else: print(‘String does not contain substring’) The first argument is the string you are searching, and the second is the substring you are looking for. It also returns a Boo...
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'” since “California” includes “CA”. Theinoperator is case...
fromstring(rsp_data) namespaces = {'file-operation': 'urn:huawei:yang:huawei-file-operation'} mpath = '{}'.format('dir') for file_tmp in root_elem.findall(mpath, namespaces): file_name = file_tmp.find("file-name", namespaces) elem = file_tmp.find("dir-name", namespaces) if ...
ValueError: source code string cannot containnullbytes 使用IDLE去打开该模块对应文件时,会报: 会发现是编码有问题,老猿使用缺省编码cp936去打开时还是报错: 老猿知道这一定是文件的编码问题,想起来当时为了测试文件编码,将该文件存为了:UTF-16编码,在IDLE中打开文件时填入UTF-16: ...
Return a copy of the string where all tab characters are replaced by one or more spaces, depending on the current column and the given tab size. The column number is reset to zero after each newline occurring in the string. If tabsize is not given, a tab size of 8 characters is assu...
Let’s apply exactly the same Python syntax to our second string: print(any(c.isalpha()forcinmy_string2))# Check if letters are contained in string# False This time, the logical value False has been returned, i.e. our second string does not contain any letters. ...