正则表达式包含三个字符之一？

Question

我需要编写一个匹配字符串的正则表达式，该字符串具有三个字符之一，仅表示x，y和z。我试过"[xyz]^"，但它不起作用。该字符串可能包含任何其他字符，但必须包含任何顺序或位置的三个给定字符中的至少一个

Answer 1

Regex Demo

\b\w*(x|y|z)\w*\b

Debuggex Demo

\b assert position at a word boundary (^\w|\w$|\W\w|\w\W)
\w* match any word character [a-zA-Z0-9_]
    Quantifier: Between zero and unlimited times, as many times as possible, giving back as needed [greedy]
1st Capturing group (x|y|z)
    1st Alternative: x
        x matches the character x literally (case sensitive)
    2nd Alternative: y
        y matches the character y literally (case sensitive)
    3rd Alternative: z
        z matches the character z literally (case sensitive)
\w* match any word character [a-zA-Z0-9_]
    Quantifier: Between zero and unlimited times, as many times as possible, giving back as needed [greedy]
\b assert position at a word boundary (^\w|\w$|\W\w|\w\W)
g modifier: global. All matches (don't return on first match)
m modifier: multi-line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Answer 2

这可能就是你要找的东西：

 ^.*[xyz].*$

Debuggex Demo

Answer 3

以下正则表达式应匹配：

^.*[xyz].*$

在python中：

>>> import re
>>> re.match(r'^.*[xyz].*$', 'AzE')
<_sre.SRE_Match object at 0x2643718>
>>> re.match(r'^.*[xyz].*$', 'AEz')
<_sre.SRE_Match object at 0x2643cc8>
>>> re.match(r'^.*[xyz].*$', 'AE')
>>>