你将会学到 学会Python核心函数库的用法 Python核心函数库 课程简介 你不知道的Python核心API都在这里! 本课程使用Python 3.9.2讲解 这套课程主要讲解Python的核心API。 这些API主要参考了Python的官方文档,涵盖绝大多数Python核心API,并配有大量的实战代码。很多API在其他书籍上从未出现过,或没有深入讲解。通过这些核...
importre#Sample texttext ='Computer says "no." Phone says "yes."'#(a) Regex that finds quoted strings - longest matchstr_pat = re.compile(r'\"(.*)\"')print(str_pat.findall(text))#(b) Regex that finds quoted strings - shortest matchstr_pat = re.compile(r'\"(.*?)\"')print...
# (a) Regex that finds quoted strings - longest match str_pat = re.compile(r'\"(.*)\"') print(str_pat.findall(text)) # (b) Regex that finds quoted strings - shortest match str_pat = re.compile(r'\"(.*?)\"') print(str_pat.findall(text)) 1. 2. 3. 4. 5. 6. 7. ...
max_match = max(matches, key=len) return max_match else: return None data = "This is a test string with multiple patterns. The longest pattern is 'multiple patterns'." pattern = r'\b\w+\b' # 匹配单词 max_match = find_max_match(data, pattern) print("最大匹配模式:", max_mat...
问题描述:读入一个字符串str,输出字符串str中的连续最长的数字串。思路与代码: def longest1(s): '''查找所有连续数字''' import re t = re.findall('\d+', s) if t: return max(t, key=len) return 'No' ...
>>> re.findall(r'(?P<alpha>[a-z])\d+(?P=alpha)','a123a456a') ['a'] (?#...) #注释型括号,此括号完全被忽略 >>> re.match(r'(?#编译)(?P<last_name>[a-zA-Z]+)\s(?P<first_name>[a-zA-Z]+)',name).groupdict() ...
21. Find SubstringsWrite a Python program to find the substrings within a string. Sample text : 'Python exercises, PHP exercises, C# exercises'Pattern :'exercises'Note: There are two instances of exercises in the input string.Click me to see the solution...
... """ >>> regex.findall(text) ['support@example.com', 'sales@example.com'] The pattern variable holds a raw string that makes up a regular expression to match email addresses. Note how the string contains several backslashes that are escaped and inserted into the resulting string as ...
2.用 re.compile() 函数创建一个 Regex 对象(记得使用原始字符串)3.向 Regex 对象的 search() 方法传入想查找的字符串。它返回一个 Match 对象(一般用 mo 接收)4.调用 Match 对象的 group() 方法,返回实际匹配的字符串demo: import re>>> phoneNumRegex = re.compile(r'(\d\d\d)-(\d\d\d-\d\...
# 找到某个目录下的所有符合输入规范的文件 def gen_find(filepat, top): ''' Find all filenames in a directory tree that match a shell wildcard pattern ''' for path, dirlist, filelist in os.walk(top): for name in fnmatch.filter(filelist, filepat): yield os.path.join(path,name) #...