regex101: Python Match Workspace

Pro

(?x)applies the following effective flags to the remainder of the pattern: gmsx

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

Comment: re.X, re.M, re.S (DOTALL)

Non-Capturing Group(?: # start of non capturing group ^$\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST$\s*\r?\n # date and time (?!---\s*\r?\nad\.ft has) # next lines are not the ---\n\ad.ft etc. ---\s*\r?\n # --- line [\w.]+\s*\r?\n # name line \s* # skip leading whitespace )

Comment: start of non capturing group

^start of line

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{4}a Unicode decimal digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

\ the literal (32₁₀ / 40₈ / 20₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

\ the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[AP]

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

BSTthe literal text BST (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

\r?optionally matches a carriage return (ASCII 13)

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

Comment: date and time

Negative Lookahead(?!---\s*\r?\nad\.ft has)

---the literal text ---

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

\r?optionally matches a carriage return (ASCII 13)

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

adthe literal text ad (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

ft hasthe literal text fthas (case sensitive)

Comment: next lines are not the ---\n\ad.ft etc.

---the literal text ---

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

\r?optionally matches a carriage return (ASCII 13)

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

Comment: --- line

Character Class[\w.]+

+matches at least one character from the set below:

\wa Unicode word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\r?optionally matches a carriage return (ASCII 13)

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

Comment: name line

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

Comment: skip leading whitespace

Comment: end of non-capture group

Comment: The folowing is capture group 1. Match characters until you get to the next date-time:

Group 1((?:(?!\s*\r?\n$\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST$).)*)

Non-Capturing Group(?:(?!\s*\r?\n$\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST$).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\s*\r?\n$\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST$)

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

\r?optionally matches a carriage return (ASCII 13)

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

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{4}a Unicode decimal digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

\ the literal (32₁₀ / 40₈ / 20₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

\ the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[AP]

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

BSTthe literal text BST (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

.any Unicode character

Comment: skip trailing whitespace

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

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

25 tokens

Regular Expression

(?x)                                        # re.X, re.M, re.S (DOTALL)
(?:                                                             # start of non capturing group
 ^\(\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST\)\s*\r?\n  # date and time
 (?!---\s*\r?\nad\.ft has)                                      # next lines are not the ---\n\ad.ft etc.
 ---\s*\r?\n                                                    # --- line
 [\w.]+\s*\r?\n                                                 # name line
 \s*                                                            # skip leading whitespace
)                                                               # end of non-capture group
# The folowing is capture group 1. Match characters until you get to the next date-time:
((?:(?!\s*\r?\n\(\d{4}-\d{2}-\d{2}\ \d{2}:\d{2}:\d{2}\ [AP]M\ BST\)).)*)# skip trailing whitespace

New

(2021-07-02 01:00:00 AM BST)
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syl.hs has joined the conversation



(2021-07-02 01:00:23 AM BST)
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e.wang
Good Morning
How're you?




(2021-07-02 01:05:11 AM BST)
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wk.wang
Hi, I'm Good.



(2021-07-02 01:08:01 AM BST)
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perter.derrek
we got the update on work.
It will get complete by next week.

(2021-07-15 08:59:41 PM BST)
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ad.ft has left the conversation