如何创建正则表达式，其中模式中的字符之间可以有特定的字符并且我有一个“通配符”字符？
[英]How to create regex where there can be specific char between characters in pattern and I have one “wildcard” char?
问题描述
I want to create regex in python where I'm given a substring and I want to find it in my string.
我想在 python 中创建正则表达式，我得到一个 substring 并且我想在我的字符串中找到它。 Characters in substring and my string are always either D, T or F. There are two conditions for match: substring 和我的字符串中的字符始终为 D、T 或 F。匹配条件有两个：
- After every character in given substring there can occur char '-' (I don't know how to approach this one especially)在给定 substring 中的每个字符之后，可能会出现 char '-' （我不知道如何特别处理这个）
- Every character can be either the character I'm looking at or 'X' so X is a "wildcard" (I know I can use '|' for that so it would be I believe ([DTF]|X))每个字符都可以是我正在查看的字符或“X”，因此 X 是“通配符”（我知道我可以使用“|”，所以我相信 ([DTF]|X)）
So what I mean is if I'm given DTTFDD as substring other proper matches would be:所以我的意思是，如果我得到 DTTFDD 作为 substring 其他适当的匹配将是：
- D - TTFDD D - TTFDD
- D X TFDD D X TFDD
Edit: These matches can occur in bigger string such as FTDTTDFD D-TTFXD TFTFD编辑：这些匹配可能出现在更大的字符串中，例如 FTDTTDFD D-TTFXD TFTFD
How can I put all of this together?我怎样才能把所有这些放在一起？
1 个解决方案
解决方案1
2 已采纳 2021-02-08 20:59:30
Looks like you could try:看起来你可以尝试：
[DX]-?(?:[TX]-?){2}[FX]-?(?:[DX]-?){2}
[DX]-?- A literal "D" or "X" followed by an optional hyphen.- 文字“D”或“X”后跟可选的连字符。-
(?:- Open non-capture group:(?:- 打开非捕获组：-
[TX]-?- A literal "T" or "X" followed by an optional hyphen.- 文字“T”或“X”后跟可选的连字符。 -
){2}- Close non-capture group and match twice.){2}- 关闭非捕获组并匹配两次。
-
-
[FX]-?- A literal "F" or "X" followed by an optional hyphen.- 文字“F”或“X”后跟可选的连字符。 -
(?:- Open non-capture group:(?:- 打开非捕获组：-
[DX]-?- A literal "D" or "X" followed by an optional hyphen.- 文字“D”或“X”后跟可选的连字符。 -
){2}- Close non-capture group and match twice.){2}- 关闭非捕获组并匹配两次。
-
A little less verbose without the non-capture groups:没有非捕获组的冗长一点：
[DX]-?[TX]-?[TX]-?[FX]-?[DX]-?[DX]-?
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