regex101: Python Match Workspace

Pro

\ba Unicode word boundary

BC:the literal text BC: (case sensitive)

Non-Capturing Group(?:[0-9-]|[1-9][0-9]|[1-9][0-9][0-9])

1st Alternative[0-9-]

Character Class[0-9-]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[1-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

3rd Alternative[1-9][0-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?:\.(?:[0-9-]|[1-9][0-9]|[1-9][0-9][0-9])){3}

{3}repeats the group contents below exactly 3 times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[0-9-]|[1-9][0-9]|[1-9][0-9][0-9])

1st Alternative[0-9-]

Character Class[0-9-]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[1-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

3rd Alternative[1-9][0-9][0-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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

25 tokens

Regular Expression

\bBC:(?:[0-9-]|[1-9][0-9]|[1-9][0-9][0-9])(?:\.(?:[0-9-]|[1-9][0-9]|[1-9][0-9][0-9])){3}

New

'MEASUREMENT   K02313  New York
'MEASUREMENT   K02338  London [BC:2.7.7.7]
'MEASUREMENT   K14761  Kairo [BC:1.2.-.-]
'MEASUREMENT   K03629  Berlin
'MEASUREMENT   K02470  Paris [BC:5.6.2.-]
MEASUREMENT   K02469  Madrid [BC:5.43.2.2]

Substitution

'MEASUREMENT   K02313  New York
'MEASUREMENT   K02338  London [BC:2.7.7.7]
'MEASUREMENT   K14761  Kairo [BC:1.2.-.-]
'MEASUREMENT   K03629  Berlin
'MEASUREMENT   K02470  Paris [BC:5.6.2.-]
MEASUREMENT   K02469  Madrid [BC:5.43.2.2]