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Q&A Why python regexps look expecting a begin match, but not an ending one?

My impression is that the regexps behave a little bit odd: >>> import re >>> r=re.compile("test") >>> r.match("test") <re.Match object; span=(0, 4), match='test'&g...

2 answers  ·  posted 2d ago by peterh‭  ·  last activity 15h ago by Karl Knechtel‭

Question regex python-3
#1: Initial revision by user avatar peterh‭ · 2025-06-04T11:41:34Z (2 days ago)
Why python regexps look expecting a begin match, but not an ending one?
My impression is that the regexps behave a little bit odd:

```
>>> import re
>>> r=re.compile("test")
>>> r.match("test")
<re.Match object; span=(0, 4), match='test'>
>>> r.match("1test")
>>> r.match("test2")
<re.Match object; span=(0, 4), match='test'>
>>> r.match("1test2")
>>> 
```

I have also tried python-pcre, it behaves on the same way. If the "regexp" is only a single word, it should behave as a substring match (or a full-line match). It seems matching lines starting with "test", but not the ones ending with it (or containining it somewhere).

Why?