python脚本练习（3）:正则表达式实例

>>> text
'Got It\r\nThis website usescookies to improve your experience. Learn More\r\nSkip to maincontent\r\n
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No Starch Press,Inc.\r\n245 8th Street\r\nSan Francisco, CA 94103 USA\r\nPhone: 800.420.7240 or+1 415.863.9900 (9 a.m. to 5 p.m., M-F, PST)\r\nFax: +1415.863.9950\r\n\r\n
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Copyright 2020. No Starch Press,Inc\r\n\r\n'

# Create phone regex.
phoneRegex = re.compile(r'''(
    (\d{3}|\(\d{3}\))? # area code
    (\s|-|\.)?         # separator
    (\d{3})              # first 3 digits
    (\s|-|\.)          # separator
    (\d{4})              # last 4 digits
    )''', re.VERBOSE)

# Create email regex.
emailRegex = re.compile(r'''(
    [a-zA-Z0-9._%+-]+      # username
    @                      # @ symbol
    [a-zA-Z0-9.-]+         # domain name
    (\.[a-zA-Z]{2,4}){1,2} # dot-something
)''',re.VERBOSE)

matches = []
for groups in phoneRegex.findall(text):
    matches.append(groups[0])

>>>phoneRegex.findall(text)
[
('800.420.7240','800', '.', '420', '.', '7240'),
('415.863.9900','415', '.', '863', '.', '9900'),
('415.863.9950','415', '.', '863', '.', '9950')]

>>> matches
['800.420.7240', '415.863.9900','415.863.9950']

for groups in emailRegex.findall(text):
    matches.append(groups[0])

if len(matches) > 0:
    print('\n'.join(matches))
else:
    print('No phone numbers or email addressesfound.')

800.420.7240
415.863.9900
415.863.9950
info@nostarch.com
media@nostarch.com
academic@nostarch.com
info@nostarch.com