regex101: Python Match Workspace

Pro

^start of string

Group 1((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

Comment: nothing with "fruit" before

Group 2( # then, either: # 1. fruit apple, followed by things that are not "fruit", followed by fruit banana, non-fruits, and then fruit cherry, or vice versa \bfruit\b\ apple((?!\bfruit\b).)*(\bfruit\b\ banana((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ banana) | # 2. Same with banana at the beginning fruit\ banana((?!\\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ apple) | # 3. And with cherry fruit\ cherry((?!\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ banana|fruit\ banana((?!\bfruit\b).)*fruit\ apple) )

1st Alternative # then, either: # 1. fruit apple, followed by things that are not "fruit", followed by fruit banana, non-fruits, and then fruit cherry, or vice versa \bfruit\b\ apple((?!\bfruit\b).)*(\bfruit\b\ banana((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ banana)

Comment: then, either:

Comment: 1. fruit apple, followed by things that are not "fruit", followed by fruit banana, non-fruits, and then fruit cherry, or vice versa

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

\ the literal (32₁₀ / 40₈ / 20₁₆)

applethe literal text apple (case sensitive)

Group 3((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

Group 4(\bfruit\b\ banana((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ banana)

1st Alternative\bfruit\b\ banana((?!\bfruit\b).)*fruit\ cherry

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

\ the literal (32₁₀ / 40₈ / 20₁₆)

bananathe literal text banana (case sensitive)

Group 5((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

cherrythe literal text cherry (case sensitive)

2nd Alternativefruit\ cherry((?!\bfruit\b).)*fruit\ banana

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

cherrythe literal text cherry (case sensitive)

Group 6((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

bananathe literal text banana (case sensitive)

2nd Alternative # 2. Same with banana at the beginning fruit\ banana((?!\\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ apple)

Comment: 2. Same with banana at the beginning

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

bananathe literal text banana (case sensitive)

Group 7((?!\\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\\bfruit\b)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

bfruitthe literal text bfruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

Group 8(fruit\ apple((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ apple)

1st Alternativefruit\ apple((?!\bfruit\b).)*fruit\ cherry

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

applethe literal text apple (case sensitive)

Group 9((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

cherrythe literal text cherry (case sensitive)

2nd Alternativefruit\ cherry((?!\bfruit\b).)*fruit\ apple

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

cherrythe literal text cherry (case sensitive)

Group 10((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

\ba Unicode word boundary

fruitthe literal text fruit (case sensitive)

\ba Unicode word boundary

.any Unicode character

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

applethe literal text apple (case sensitive)

3rd Alternative # 3. And with cherry fruit\ cherry((?!\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ banana|fruit\ banana((?!\bfruit\b).)*fruit\ apple)

Comment: 3. And with cherry

fruitthe literal text fruit (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

cherrythe literal text cherry (case sensitive)

Group 11((?!\bfruit\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\bfruit\b)

.any Unicode character

Group 12(fruit\ apple((?!\bfruit\b).)*fruit\ banana|fruit\ banana((?!\bfruit\b).)*fruit\ apple)

Group 15((?!\bfruit\b).)*

$end of string, or before its final line terminator

Comment: no more fruit

Global pattern flags

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

s modifier: single line. Allows a dot to match line terminators

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

25 tokens

Regular Expression

^((?!\bfruit\b).)*  # nothing with "fruit" before
( # then, either:
# 1. fruit apple, followed by things that are not "fruit", followed by fruit banana, non-fruits, and then fruit cherry, or vice versa
\bfruit\b\ apple((?!\bfruit\b).)*(\bfruit\b\ banana((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ banana)
|
# 2. Same with banana at the beginning
fruit\ banana((?!\\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ cherry|fruit\ cherry((?!\bfruit\b).)*fruit\ apple)
|
# 3. And with cherry
fruit\ cherry((?!\bfruit\b).)*(fruit\ apple((?!\bfruit\b).)*fruit\ banana|fruit\ banana((?!\bfruit\b).)*fruit\ apple)
)
((?!\bfruit\b).)*$ # no more fruit

Unit Tests

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