Python3 两种方式查找字符串里的电话号码

利用非正则表达式在字符串中查找电话号码。

查号码.py

def isPhoneNumber(text):
    if len(text) !=12:
        return False
    for i in range(0,3):
        if not text[i].isdecimal():
            return False
    if text[3] != '-':
            return False
    for i in range(4,7):
        if not text[i].isdecimal():
            return False
    if text[7] != '-':
            return False
    for i in range(8,12):
        if not text[i].isdecimal():
            return False
    return True
 
print('415-555-4242 is a phone number:')
print(isPhoneNumber('415-555-4242'))
print('Moshi moshi is a phone number:')
print(isPhoneNumber('Moshi moshi'))
 
message = 'Call me at 415-555-3333 tomorrow. 415-555-4223 is my office.'
for i in range(len(message)):
    chunk = message[i:i+12]
    if isPhoneNumber(chunk):
        print('Phone number found: ' + chunk)
print('Done')

运行结果

415-555-4242 is a phone number:
True
Moshi moshi is a phone number:
False
Phone number found: 415-555-3333
Phone number found: 415-555-4223
Done


借助正则表达式在字符串中查找电话号码。

>>> import re
>>> phoneNumRegrx = re.compile(r'\d\d\d-\d\d\d-\d\d\d\d')
>>> mo = phoneNumRegrx.search('My number is 415-555-4242.')
>>> print("phone number found: "+ mo.group())
phone number found: 415-555-4242
>>> 

借助正则表达式在字符串中查找带区号的电话号码。

>>> import re
>>> phoneNumRegrx = re.compile(r'(\(\d\d\d\)) (\d\d\d-\d\d\d\d)')
>>> mo = phoneNumRegrx.search('My number is [phone].')
>>> mo.group(1)
'(415)'
>>> mo.group(2)
'555-4242'
>>> mo.group()
'[phone]'
>>> 

转载请注明：大学助 » Python3 两种方式查找字符串里的电话号码

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