multiline_string = '''This is a string where I can confortably write on multiple lines without worring about to use the escape character "\\" as in the previsou example. As you'll see, the original string formatting is preserved. ''' print(multiline_string) 改变大小写 你可以很方便的...
Currently our string ispretty long. usage="Welcome to stopwatch!\nThis script counts slowly upward,\none second per tick.\n\nNo command-line arguments are accepted." It'd be nice to break it up over multiple lines. We could make this code a little bit more readable by breaking this str...
string5 = '''This is a multi-line string.It covers multiple lines.'''与其他字符串定义方式不同，三引号可以用于定义跨越多行的字符串，无需使用换行符或反斜杠转义特殊字符。如果需要在Python中使用无限数量的三引号，可以在所有的三引号前添加"r"字符，例如：string6 = r'''This is an "endless" mult...
1、This is a string. We built it with single quotes. 2、This is also a string, but built with double quotes. 3、This is built using triple quotes, so it can span multiple lines. 4、This too is a multiline onebuilt with triple double-quotes. 2、字符串连接、重复 (1)字符串可以用 ...
multiline string that also works as a multiline comment. """ 如果您的注释跨越多行,最好使用单个多行注释,而不是几个连续的单行注释,这样更难阅读,如下所示: """This is a good way to write a comment that spans multiple lines. """# This is not a good way# to write a comment# that sp...
不要对内置类型进行子类化,而是从collections模块派生你的类,使用UserDict、UserList和UserString,这些类设计得易于扩展。如果你继承collections.UserDict而不是dict,那么示例 14-1 和 14-2 中暴露的问题都会得到解决。请参见示例 14-3。示例14-3. DoppelDict2和AnswerDict2按预期工作,因为它们扩展了UserDict而不是...
that spans multiple lines. """ # This is not a good way # to write a comment # that spans multiple lines. 1. 2. 3. 4. 5. 6. 注释和文档通常是编程过程中的事后想法,甚至被一些人认为弊大于利。但是正如 83 页的“误解:注释是不必要的”所解释的,如果你想写专业的、可读的代码,注释不是可...
12) string.whitespace 所有的空白符包含 \t 制表符 \n 换行符 (linefeed) \x0b \x0C \r 不要改变这个定义──因为所影响它的方法strip()和split()为被定义 A string containing all characters that are considered whitespace. On most systems this includes the characters space, tab, linefeed, retur...
Sometimes we try to print our string to multiple lines also and in that case what happens is that, let’s see this with an example: 有时我们也尝试将字符串打印到多行,在这种情况下会发生什么,让我们看一个例子: def multiLine(): return "This is a new line ...
strhtm=soup.prettify()# Print first500linesprint(strhtm[:500])# Extract meta tag valueprint(soup.title.string)print(soup.find('meta',attrs={'property':'og:description'}))# Extract anchor tag valueforxinsoup.find_all('a'):print(x.string)# Extract Paragraph tag valueforxinsoup.find_all...