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| 1 | +# Pages 147 - 153 in ATBS textbook |
| 2 | +# Pattern Matching and Regular Expressions |
| 3 | + |
| 4 | +## Ex... Phone Number |
| 5 | +# 919-675-9338 <- A phone number |
| 6 | +# 4,150,000 <- Not a phone number |
| 7 | + |
| 8 | + |
| 9 | +##Non-RegEx Example |
| 10 | +# def isPhoneNumber(text): |
| 11 | +# if len(text) != 12: |
| 12 | +# return False #not phone number |
| 13 | +# for i in range(0,3): |
| 14 | +# if not text[i].isdecimal(): |
| 15 | +# return False #no area code |
| 16 | +# if text[3] != '-': |
| 17 | +# return False #missing dash |
| 18 | +# for i in range(4,7): |
| 19 | +# if not text[i].isdecimal(): |
| 20 | +# return False #no first 3 digits |
| 21 | +# if text[7] != '-': |
| 22 | +# return False #missing second dash |
| 23 | +# for i in range(8,12): |
| 24 | +# if not text[i].isdecimal(): |
| 25 | +# return False #missing last 4 digits |
| 26 | +# return True |
| 27 | +# |
| 28 | +# print(isPhoneNumber('919-675-9338')) |
| 29 | +# |
| 30 | +# |
| 31 | +# message = 'Call me at 415-555-1011 tomorrow, or at 919-675-9338 over the weekend for my personal line' |
| 32 | +# foundNumber = False |
| 33 | +# for i in range(len(message)): |
| 34 | +# chunk = message[i:i+12] |
| 35 | +# if isPhoneNumber(chunk): |
| 36 | +# print('Phone number found:', chunk) |
| 37 | +# foundNumber = True |
| 38 | +# if not foundNumber: |
| 39 | +# print('Could not find any phone numbers.') |
| 40 | + |
| 41 | + |
| 42 | + |
| 43 | + |
| 44 | +# So now, let's decrease the lines of code we need for that |
| 45 | +import re |
| 46 | +message = 'Call me at 415-555-1011 tomorrow, or at 919-675-9338 over the weekend.' |
| 47 | + |
| 48 | +# phoneNumRegex = re.compile(r'\d\d\d-\d\d\d-\d\d\d\d') |
| 49 | +# mo = phoneNumRegex.search(message) |
| 50 | +# print(mo.group()) |
| 51 | + |
| 52 | +phoneNumRegex = re.compile(r'\d\d\d-\d\d\d-\d\d\d\d') |
| 53 | +print(phoneNumRegex.findall(message)) |
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