请求优化正则表达式以拆分关联的企业名称、电话、城镇及邮箱

Looks like your original regex had a few key issues: it was incomplete, anchored to the start of the string (so it only matched the first entry), and didn’t properly separate the company name from the town. Let’s fix this by using a regex that captures each component of every entry cleanly.

Corrected Code #

import re

a = """ ABC Limited, Nairobi0754009522info@kenyagreats.com DEF Limited, Nairobi0737 308 793info@defoptions.co.ke GHI Electrical Services, Mombasa+254787254230info@ghielectricalservices.co.ke JKL Limited, Kakamega+254541112470jkl@yahoo.com MNO Kenya, Nairobi0797429578mnoe@gmail.com"""

# Clean up leading/trailing whitespace from the input string
cleaned_text = a.strip()

# Regex pattern to capture company name, town, phone number, and email for each entry
entry_pattern = r'([A-Za-z ]+), ([A-Za-z]+)([\+\d ]+)([a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,})'

# Extract all entries using the pattern
entries = re.findall(entry_pattern, cleaned_text)

# Print the results in a readable format
for index, (company, town, phone, email) in enumerate(entries, 1):
    print(f"Entry {index}:")
    print(f"  Company: {company.strip()}")
    print(f"  Town: {town}")
    print(f"  Phone: {phone.strip()}")
    print(f"  Email: {email}")
    print()

Breakdown of the Regex #

Let’s unpack what each part of entry_pattern does:

• ([A-Za-z ]+): Captures the company name (supports letters and spaces, e.g., "GHI Electrical Services")
• , : Matches the comma and space separating the company from the town
• ([A-Za-z]+): Captures the town (only letters, e.g., "Mombasa" or "Kakamega")
• ([\+\d ]+): Captures the phone number (handles + symbols, digits, and spaces, e.g., "+254787254230" or "0737 308 793")
• ([a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}): Uses a standard email regex snippet to capture valid email addresses, including domains with multiple dots.

Sample Output #

When you run the code, you’ll get this structured output:

Entry 1:
  Company: ABC Limited
  Town: Nairobi
  Phone: 0754009522
  Email: info@kenyagreats.com

Entry 2:
  Company: DEF Limited
  Town: Nairobi
  Phone: 0737 308 793
  Email: info@defoptions.co.ke

Entry 3:
  Company: GHI Electrical Services
  Town: Mombasa
  Phone: +254787254230
  Email: info@ghielectricalservices.co.ke

Entry 4:
  Company: JKL Limited
  Town: Kakamega
  Phone: +254541112470
  Email: jkl@yahoo.com

Entry 5:
  Company: MNO Kenya
  Town: Nairobi
  Phone: 0797429578
  Email: mnoe@gmail.com

Why the Original Code Failed #

• Your regex was incomplete (missing closing brackets and parentheses)
• The ^ anchor restricted matches to only the start of the string, not all entries
• It didn’t split the company name and town into separate capture groups
• The email capture group was improperly defined and missing critical characters

内容的提问来源于stack exchange，提问作者Harrod Domer