Regular Expressions 101

Group matched(?P<matched>import\s+(?:(?P<imports>[\*\{\}\,\w ]*?))\s*from\s*[\"'](?P<url>.*?)[\"'])

importthe literal text import (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Non-Capturing Group(?:(?P<imports>[\*\{\}\,\w ]*?))

Group imports(?P<imports>[\*\{\}\,\w ]*?)

Character Class[\*\{\}\,\w ]*?

*?matches any number of characters from the set below:

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\wa Unicode word character

the literal (32₁₀ / 40₈ / 20₁₆)

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

fromthe literal text from (case sensitive)

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

Character Class[\"']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group url(?P<url>.*?)

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

Character Class[\"']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

u modifier: unicode. Makes \w, \W, \b, \B, \d, \D, \s, and \S use Unicode semantics (redundant in Python 3)

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?P<matched>import\s+(?:(?P<imports>[\*\{\}\,\w ]*?))\s*from\s*[\"'](?P<url>.*?)[\"'])

New

import defaultExport from "module-name";
import * as name from "module-name";
import { export1 } from "module-name";
import { export1 as alias1 } from "module-name";
import { export1 , export2 } from "module-name";
import defaultExport, * as name from "module-name";

Regular Expression

Extraction