1 class str(basestring): 2 """ 3 str(object='') -> string 4 5 Return a nice string representation of the object. 6 If the argument is a string, the return value is the same object. 7 """ 8 def capitalize(self): 9 """ 首字母变大写 """ 10 """ 11 S.capitalize() -> str...
# 获取用户输入的文字和字符串text=input("请输入文字:")target_string=input("请输入要判断的字符串:") 1. 2. 3. 步骤2:使用IF语句判断文字是否包含字符串 接下来,我们使用IF语句来判断文字是否包含字符串。在Python中,我们可以使用字符串的in关键字来判断一个字符串是否包含另一个字符串。如果包含,则返回Tr...
In addition, we canaccess just a specific characteror aslice of charactersof a string. We might want to do this, for example, if we have a text that’s too long to display and we want to show just a portion of it. Or if we want to make an acronym by taking the first letter of...
text = "Hello, World!,Hello2" if "Hello" in text: print("找到了子字符串 'Hello'")...
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...
();}//输出打印的信息staticvoidp_OutputDataReceived(object sender,DataReceivedEventArgs e){if(!string.IsNullOrEmpty(e.Data)){AppendText(e.Data+Environment.NewLine);}}publicdelegatevoidAppendTextCallback(string text);publicstaticvoidAppendText(string text){Console.WriteLine(text);//此处在控制台输出.py...
my_set = set([1,2,3,4]) # 检查元素是否在集合中 my_set.add(4) if 4 in my_set: print("4 在集合中") if 5 not in my_set: print('5 不在集合中') 六、元组-tuple Python中,可以通过tuple方法或小括号的形式定义元组。 元组是 Python 中不可变的序列类型,用于存储一组有序的元素。和列...
' stRINg lEArn' >>> >>> str.zfill(20) #str右对齐,左边填充0 '00000000stRINg lEArn' 大小写转换 >>> str='stRINg lEArn' >>> >>> str.upper() #转大写 'STRING LEARN' >>> >>> str.lower() #转小写 'string learn' >>> >>> str.capitalize() #字符串首为大写,其余小写 ...
if punct in string: num_puncts+=string.count(punct)print(num_puncts) --- 19 如果没有可支配的re模块,那就要用到上面的代码。但如果有re模块,则只需两行代码: import re pattern = r"[;.,–]" print(len(re.findall(pattern,string))) --- 19 本文讨论的是最常用的正则表达式模式,以及一些经常...