from bs4 import BeautifulSoup import requests url = "https://example.com" response = requests.get(url) soup = BeautifulSoup(response.text, "html.parser") title = soup.title.string print(title) # 输出: 示例网站 9.3 案例3:正则表达式在日志分析中的应用 日志文件中,我们可能需要提取特定模式的信息...
A string containing all characters that are considered whitespace. On most systems this includes the characters space, tab, linefeed, return, formfeed, and vertical tab. Do not change its definition — the effect on the routines strip() and split() is undefined. print string.whitespace 2. st...
常用函数: string.split(separator),把字符串按照 separator 分割成子字符串,并返回一个分割后子字符串组合的列表; string.strip(str),去掉首尾的 str 字符串; string.lstrip(str),只去掉开头的 str 字符串; string.rstrip(str),只去掉尾部的 str 字符串。 列表和元组 列表和元组,都是一个可以放置任意数据类型...
['Using', 'the', 'default'] strip strip方法返回一个字符串,其中左边和右边(但内部没有)有空格 >>> ' internal whitespace is kept '.strip() 'internal whitespace is kept' 还可以通过在字符串参数中列出所有字符来指定要删除的字符 >>> '*** SPAM * for * everyone!!! ***'.strip(' *!') ...
>>># format also supports binary numbers >>>"int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}".format(42) 'int: 42; hex: 2a; oct: 52; bin: 101010' >>># with 0x, 0o, or 0b as prefix: >>>"int: {0:d}; hex: {0:#x}; oct: {0:#o}; bin: {0:#b}"....
在Python中,string文字是: 代表Unicode字符的字节数组 用单引号或双引号引起来 无限长度 字符串文字 str = 'hello world' str = "hello world" 一个多行字符串使用三个单引号或三个双引号创建的。 多行字符串文字 str = '''Say hello to python ...
string.letters 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' >>> string.lowercase 'abcdefghijklmnopqrstuvwxyz' >>> string.uppercase 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' >>> string.octdigits '01234567' >>> string.punctuation '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' >>> string....
93. Extract numbers from string. Write a Python program to extract numbers from a given string. Sample Output: Original string: red 12 black 45 green Extract numbers from the said string: [12, 45] Click me to see the sample solution ...
import numbersclassMyList():def__init__(self, anylist):self.data = anylistdef__len__(self):return len(self.data)def__getitem__(self, index): print("key is : " + str(index)) cls = type(self)if isinstance(index, slice): print("data is : " + str(self.data[index])...
6–6. 字符串.创建一个 string.strip()的替代函数:接受一个字符串,去掉它前面和后面的 空格(如果使用 string.*strip()函数那本练习就没有意义了) 1 'Take a string and remove all leading and trailing whitespace' 2 3 def newStrip(str):