Regular Expressions 101

Negative Lookbehind(?<!r)

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

Group 1([\"\'])

Character Class[\"\']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2(.*?)

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

Character Class[\\]

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 3(.*?)

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

Group 4([\"\'])

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<!r)([\"\'])(.*?)[\\](.*?)([\"\'])

New

test1 = re.compile('^(.*?)\test1?$', re.S)

test2 = re.compile(r'^(.*?)\test2?$', re.S)

test3 = re.compile("^(.*?)\test3?$", re.S)

test4 = re.compile(r"^(.*?)\test4?$", re.S)

test5.setdefault('test5', re.search('^(.*?)\test5?$', '').groups()[0])

test5.setdefault('test5', re.search(r'^(.*?)\test5?$', '').groups()[0])