Regular Expressions 101

Pro

^start of line

if TYPE_CHECKING:the literal text if TYPE_CHECKING: (case sensitive)

Non-Capturing Group(?:\n\s*from .*)*

*repeats the group contents below any number of times:

\na line-feed (newline) character (ASCII 10)

\s*a Unicode whitespace character, repeated any number of times

from the literal text from (case sensitive)

.*any Unicode character (except for line terminators), repeated any number of times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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25 tokens

^if TYPE_CHECKING:(?:\n\s*from .*)*

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