【发布时间】：2016-10-22 01:45:52
【问题描述】：
试图更多地了解 Python 中的正则表达式，我发现很难匹配两个符号之间的任何字符（包括换行符、制表符、空格等），包括那些符号。
例如：
foobar89\n\nfoo\tbar; '''blah blah blah'8&^"'''需要匹配''blah blah blah'8&^"'''fjfdaslfdj; '''blah\n blah\n\t\t blah\n'8&^"'''需要匹配'''blah\n blah\n\t\t blah\n'8&^"'''
（注意，\n 和 \t 符号表示文本文件中的换行符和制表符）
按照这个question，我试过这个^.*\'''(.*)\'''.*$和这个*?\'''(.*)\'''.*，但没有成功。
有人可以指导我做错了什么吗？我也将不胜感激。
另外，为了理解特殊字符转义的概念，我想知道我是否通过替换两个符号（例如从'''到"""或到***）它仍然可以工作的正则表达式（对于相关字符串）？
例如对于
-
fjfdaslfdj; """blah\n blah\n\t\t blah\n'8&^"""需要匹配"""blah\n blah\n\t\t blah\n'8&^"""
更新
我正在尝试测试正则表达式的代码（取自 here 并修改）：
import collections
import re
Token = collections.namedtuple('Token', ['typ', 'value', 'line', 'column'])
def tokenize(code):
token_specification = [
# regexes suggested from [Thomas Ayoub][3]
('BOTH', r'([\'"]{3}).*?\2'), # for both triple-single quotes and triple-double quotes
('SINGLE', r"('''.*?''')"), # triple-single quotes
('DOUBLE', r'(""".*?""")'), # triple-double quotes
# regexes which match OK
('COM', r'#.*'),
('NUMBER', r'\d+(\.\d*)?'), # Integer or decimal number
('ASSIGN', r':='), # Assignment operator
('END', r';'), # Statement terminator
('ID', r'[A-Za-z]+'), # Identifiers
('OP', r'[+\-*/]'), # Arithmetic operators
('NEWLINE', r'\n'), # Line endings
('SKIP', r'[ \t]+'), # Skip over spaces and tabs
('MISMATCH',r'.'), # Any other character
]
test_regexes = ['COM', 'BOTH', 'SINGLE', 'DOUBLE']
tok_regex = '|'.join('(?P<%s>%s)' % pair for pair in token_specification)
line_num = 1
line_start = 0
for mo in re.finditer(tok_regex, code):
kind = mo.lastgroup
value = mo.group(kind)
if kind == 'NEWLINE':
line_start = mo.end()
line_num += 1
elif kind == 'SKIP':
pass
elif kind == 'MISMATCH':
pass
else:
if kind in test_regexes:
print(kind, value)
column = mo.start() - line_start
yield Token(kind, value, line_num, column)
f = r'C:\path_to_python_file_with_above_examples'
with open(f) as sfile:
content = sfile.read()
for t in tokenize(content):
pass #print(t)
【问题讨论】：
标签： regex python-3.x