KnowCardPython · Regular Expressions
What does the conditional extension (?(id/name)yes-pattern|no-pattern) do?
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More in Regular Expressions
Greedy .* vs lazy .*? — what's the difference and when does it bite you?
Why should regex patterns almost always be written as raw strings r"..." instead of plain strings?
What does this print?
```
import re
print(re.match(r"Python", "I love Python"))
```
re.match vs re.search vs re.fullmatch — what does each require of where the pattern sits in the string?
What does this print?
```
import re
print(re.findall(r"P[Yy]thon",
"Python or PYthon"))
```
What does this print?
```
import re
print(re.findall(r"P([Yy])thon",
"Python and PYthon"))
```
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