>>>importre>>>help(re.findall)Helponfunctionfindallinmodulere:findall(pattern,string,flags=0)Returnalistofallnon-overlappingmatchesinthestring.Ifoneormorecapturinggroupsarepresentinthepattern,returnalistofgroups;thiswillbealistoftuplesifthepatternhasmorethanonegroup.Emptymatchesareincludedintheresult.>>...
Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'NoneType' object has no attribute 'group' >>> pat.findall('ax1by2cz3') #匹配所有的数字,列表返回 ['1', '2', '3'] # "\D" : 非数字 >>> pat=re.compile('\D') >>> pat.match('ax1by...
File "day2.py", line 10, in <module> if (re.findall('^u',a)[0]) == 'u': IndexError: list index out of range 我哪里做错了? 可以用regex处理,但我认为那将非常over-engineered。由于您的文件由少量已知字符串和数字组成,因此您可以简单地根据字符串隔离数字。 这应该起作用: forward = 0 p...
File"<stdin>", line1,in<module> IndexError: no such group>>>m=re.finditer(r'(\d)\1*',s)>>>m.next().group()'111'>>>m.next().group()'3'>>>m.next().group()'44'>>>m.next().group()'6'>>>m.next().group()'777'>>>m.next().group() Traceback (most recent call ...
当使用findAll语句时遇到问题,可能是由于以下几个方面引起的: 1. 数据库连接问题:首先需要确保数据库连接已经建立并且正常。可以检查数据库连接的配置信息,包括数据库地址、端口号、用户名和密码等...
>>> findall(f, filter_=lambda node: node.name in ("a", "b")) Traceback (most recent call last): File "<pyshell#16>", line 1, in <module> findall(f, filter_=lambda node: node.name in ("a", "b")) NameError: name 'findall' is not defined ...
In Python, the “re.findall()” function of the “regex” module returns the non-overlapping pattern of the given string. The return value will be in the form of a list of strings. The “re.findall()” returns the matched list of substrings from the given string. The “re.findall...
PYTHON的RE模块理解(RE.COMPILE、RE.MATCH、RE.SEARCH) - CSDN博客 import re help(re.compile) ''' 输出结果为: Help on function compile in module re: compile(pattern, flags=0) Compile a regular expression pattern, returning a pattern object. ...
import re a = '(((' for i in a: c = re.findall(i, '(81(eeqe(ah') print(c) 附报错提示: Traceback (most recent call last): File "/Users/ethanc/PycharmProjects/pythonProject/test/test.py", line 3, in <module> c = re.findall(a, '(((') ^^^ File "/Library/Framewo...
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