Python Regex Tutorial Snippets

Author: Corey Schafer

Python-Regular-Expressions/data.txt

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+Dave Martin
+615-555-7164
+173 Main St., Springfield RI 55924
+davemartin@bogusemail.com
+
+Charles Harris
+800-555-5669
+969 High St., Atlantis VA 34075
+charlesharris@bogusemail.com
+
+Eric Williams
+560-555-5153
+806 1st St., Faketown AK 86847
+laurawilliams@bogusemail.com
+
+Corey Jefferson
+900-555-9340
+826 Elm St., Epicburg NE 10671
+coreyjefferson@bogusemail.com
+
+Jennifer Martin-White
+714-555-7405
+212 Cedar St., Sunnydale CT 74983
+jenniferwhite@bogusemail.com
+
+Erick Davis
+800-555-6771
+519 Washington St., Olympus TN 32425
+tomdavis@bogusemail.com
+
+Neil Patterson
+783-555-4799
+625 Oak St., Dawnstar IL 61914
+neilpatterson@bogusemail.com
+
+Laura Jefferson
+516-555-4615
+890 Main St., Pythonville LA 29947
+laurajefferson@bogusemail.com
+
+Maria Johnson
+127-555-1867
+884 High St., Braavos‎ ME 43597
+mariajohnson@bogusemail.com
+
+Michael Arnold
+608-555-4938
+249 Elm St., Quahog OR 90938
+michaelarnold@bogusemail.com
+
+Michael Smith
+568-555-6051
+619 Park St., Winterfell VA 99000
+michaelsmith@bogusemail.com
+
+Erik Stuart
+292-555-1875
+220 Cedar St., Lakeview NY 87282
+robertstuart@bogusemail.com
+
+Laura Martin
+900-555-3205
+391 High St., Smalltown WY 28362
+lauramartin@bogusemail.com
+
+Barbara Martin
+614-555-1166
+121 Hill St., Braavos‎ UT 92474
+barbaramartin@bogusemail.com
+
+Linda Jackson
+530-555-2676
+433 Elm St., Westworld TX 61967
+lindajackson@bogusemail.com
+
+Eric Miller
+470-555-2750
+838 Main St., Balmora MT 56526
+stevemiller@bogusemail.com
+
+Dave Arnold
+800-555-6089
+732 High St., Valyria KY 97152
+davearnold@bogusemail.com
+
+Jennifer Jacobs
+880-555-8319
+217 High St., Old-town IA 82767
+jenniferjacobs@bogusemail.com
+
+Neil Wilson
+777-555-8378
+191 Main St., Mordor IL 72160
+neilwilson@bogusemail.com
+
+Kurt Jackson
+998-555-7385
+607 Washington St., Blackwater NH 97183
+kurtjackson@bogusemail.com
+
+Mary Jacobs
+800-555-7100
+478 Oak St., Bedrock IA 58176
+maryjacobs@bogusemail.com
+
+Michael White
+903-555-8277
+906 Elm St., Mordor TX 89212
+michaelwhite@bogusemail.com
+
+Jennifer Jenkins
+196-555-5674
+949 Main St., Smalltown SC 96962
+jenniferjenkins@bogusemail.com
+
+Sam Wright
+900-555-5118
+835 Pearl St., Smalltown ND 77737
+samwright@bogusemail.com
+
+John Davis
+905-555-1630
+451 Lake St., Bedrock GA 34615
+johndavis@bogusemail.com
+
+Eric Davis
+203-555-3475
+419 Lake St., Balmora OR 30826
+neildavis@bogusemail.com
+
+Laura Jackson
+884-555-8444
+443 Maple St., Quahog MS 29348
+laurajackson@bogusemail.com
+
+John Williams
+904-555-8559
+756 Hill St., Valyria KY 94854
+johnwilliams@bogusemail.com
+
+Michael Martin
+889-555-7393
+216 High St., Olympus NV 21888
+michaelmartin@bogusemail.com
+
+Maggie Brown
+195-555-2405
+806 Lake St., Lakeview MD 59348
+maggiebrown@bogusemail.com
+
+Erik Wilson
+321-555-9053
+354 Hill St., Mordor FL 74122
+kurtwilson@bogusemail.com
+
+Elizabeth Arnold
+133-555-1711
+805 Maple St., Winterfell NV 99431
+elizabetharnold@bogusemail.com
+
+Jane Martin
+900-555-5428
+418 Park St., Metropolis ID 16576
+janemartin@bogusemail.com
+
+Travis Johnson
+760-555-7147
+749 Washington St., Braavos‎ SD 25668
+travisjohnson@bogusemail.com
+
+Laura Jefferson
+391-555-6621
+122 High St., Metropolis ME 29540
+laurajefferson@bogusemail.com
+
+Tom Williams
+932-555-7724
+610 High St., Old-town FL 60758
+tomwilliams@bogusemail.com
+
+Jennifer Taylor
+609-555-7908
+332 Main St., Pythonville OH 78172
+jennifertaylor@bogusemail.com
+
+Erick Wright
+800-555-8810
+858 Hill St., Blackwater NC 79714
+jenniferwright@bogusemail.com
+
+Steve Doe
+149-555-7657
+441 Elm St., Atlantis MS 87195
+stevedoe@bogusemail.com
+
+Kurt Davis
+130-555-9709
+404 Oak St., Atlantis ND 85386
+kurtdavis@bogusemail.com
+
+Corey Harris
+143-555-9295
+286 Pearl St., Vice City TX 57112
+coreyharris@bogusemail.com
+
+Nicole Taylor
+903-555-9878
+465 Hill St., Old-town LA 64102
+nicoletaylor@bogusemail.com
+
+Elizabeth Davis
+574-555-3194
+151 Lake St., Eerie SD 17880
+elizabethdavis@bogusemail.com
+
+Maggie Jenkins
+496-555-7533
+504 Lake St., Gotham PA 46692
+maggiejenkins@bogusemail.com
+
+Linda Davis
+210-555-3757
+201 Pine St., Vice City AR 78455
+lindadavis@bogusemail.com
+
+Dave Moore
+900-555-9598
+251 Pine St., Old-town OK 29087
+davemoore@bogusemail.com
+
+Linda Jenkins
+866-555-9844
+117 High St., Bedrock NE 11899
+lindajenkins@bogusemail.com
+
+Eric White
+669-555-7159
+650 Oak St., Smalltown TN 43281
+samwhite@bogusemail.com
+
+Laura Robinson
+152-555-7417
+377 Pine St., Valyria NC 78036
+laurarobinson@bogusemail.com
+
+Charles Patterson
+893-555-9832
+416 Pearl St., Valyria AK 62260
+charlespatterson@bogusemail.com
+
+Joe Jackson
+217-555-7123
+683 Cedar St., South Park KS 66724
+joejackson@bogusemail.com
+
+Michael Johnson
+786-555-6544
+288 Hill St., Smalltown AZ 18586
+michaeljohnson@bogusemail.com
+
+Corey Miller
+780-555-2574
+286 High St., Springfield IA 16272
+coreymiller@bogusemail.com
+
+James Moore
+926-555-8735
+278 Main St., Gotham KY 89569
+jamesmoore@bogusemail.com
+
+Jennifer Stuart
+895-555-3539
+766 Hill St., King's Landing GA 54999
+jenniferstuart@bogusemail.com
+
+Charles Martin
+874-555-3949
+775 High St., Faketown PA 89260
+charlesmartin@bogusemail.com
+
+Eric Wilks
+800-555-2420
+885 Main St., Blackwater OH 61275
+joewilks@bogusemail.com
+
+Elizabeth Arnold
+936-555-6340
+528 Hill St., Atlantis NH 88289
+elizabetharnold@bogusemail.com
+
+John Miller
+372-555-9809
+117 Cedar St., Thundera NM 75205
+johnmiller@bogusemail.com
+
+Corey Jackson
+890-555-5618
+115 Oak St., Gotham UT 36433
+coreyjackson@bogusemail.com
+
+Sam Thomas
+670-555-3005
+743 Lake St., Springfield MS 25473
+samthomas@bogusemail.com
+
+Patricia Thomas
+509-555-5997
+381 Hill St., Blackwater CT 30958
+patriciathomas@bogusemail.com
+
+Jennifer Davis
+721-555-5632
+125 Main St., Smalltown MT 62155
+jenniferdavis@bogusemail.com
+
+Patricia Brown
+900-555-3567
+292 Hill St., Gotham WV 57680
+patriciabrown@bogusemail.com
+
+Barbara Williams
+147-555-6830
+514 Park St., Balmora NV 55462
+barbarawilliams@bogusemail.com
+
+James Taylor
+582-555-3426
+776 Hill St., Dawnstar MA 51312
+jamestaylor@bogusemail.com
+
+Eric Harris
+400-555-1706
+421 Elm St., Smalltown NV 72025
+barbaraharris@bogusemail.com
+
+Travis Anderson
+525-555-1793
+937 Cedar St., Thundera WA 78862
+travisanderson@bogusemail.com
+
+Sam Robinson
+317-555-6700
+417 Pine St., Lakeview MD 13147
+samrobinson@bogusemail.com
+
+Steve Robinson
+974-555-8301
+478 Park St., Springfield NM 92369
+steverobinson@bogusemail.com
+
+Mary Wilson
+800-555-3216
+708 Maple St., Braavos‎ UT 29551
+marywilson@bogusemail.com
+
+Sam Wilson
+746-555-4094
+557 Pearl St., Westworld KS 23225
+samwilson@bogusemail.com
+
+Charles Jones
+922-555-1773
+855 Hill St., Olympus HI 81427
+charlesjones@bogusemail.com
+
+Laura Brown
+711-555-4427
+980 Maple St., Smalltown MO 96421
+laurabrown@bogusemail.com
+
+Tom Harris
+355-555-1872
+676 Hill St., Blackwater AR 96698
+tomharris@bogusemail.com
+
+Patricia Taylor
+852-555-6521
+588 Pine St., Olympus FL 98412
+patriciataylor@bogusemail.com
+
+Barbara Williams
+691-555-5773
+351 Elm St., Sunnydale GA 26245
+barbarawilliams@bogusemail.com
+
+Maggie Johnson
+332-555-5441
+948 Cedar St., Quahog DE 56449
+maggiejohnson@bogusemail.com
+
+Kurt Miller
+900-555-7755
+381 Hill St., Quahog AL 97503
+kurtmiller@bogusemail.com
+
+Neil Stuart
+379-555-3685
+496 Cedar St., Sunnydale RI 49113
+neilstuart@bogusemail.com
+
+Linda Patterson
+127-555-9682
+736 Cedar St., Lakeview KY 47472
+lindapatterson@bogusemail.com
+
+Charles Davis
+789-555-7032
+678 Lake St., Mordor MN 11845
+charlesdavis@bogusemail.com
+
+Jennifer Jefferson
+783-555-5135
+289 Park St., Sunnydale WA 74526
+jenniferjefferson@bogusemail.com
+
+Erick Taylor
+315-555-6507
+245 Washington St., Bedrock IL 26941
+coreytaylor@bogusemail.com
+
+Robert Wilks
+481-555-5835
+573 Elm St., Sunnydale IL 47182
+robertwilks@bogusemail.com
+
+Travis Jackson
+365-555-8287
+851 Lake St., Metropolis PA 22772
+travisjackson@bogusemail.com
+
+Travis Jackson
+911-555-7535
+489 Oak St., Atlantis HI 73725
+travisjackson@bogusemail.com
+
+Laura Wilks
+681-555-2460
+371 Pearl St., Smalltown SC 47466
+laurawilks@bogusemail.com
+
+Neil Arnold
+274-555-9800
+504 Oak St., Faketown PA 73860
+neilarnold@bogusemail.com
+
+Linda Johnson
+800-555-1372
+667 High St., Balmora IN 82473
+lindajohnson@bogusemail.com
+
+Jennifer Wilson
+300-555-7821
+266 Pine St., Westworld DC 58720
+jenniferwilson@bogusemail.com
+
+Nicole White
+133-555-3889
+276 High St., Braavos‎ IL 57764
+nicolewhite@bogusemail.com
+
+Maria Arnold
+705-555-6863
+491 Elm St., Metropolis PA 31836
+mariaarnold@bogusemail.com
+
+Jennifer Davis
+215-555-9449
+859 Cedar St., Old-town MT 31169
+jenniferdavis@bogusemail.com
+
+Mary Patterson
+988-555-6112
+956 Park St., Valyria CT 81541
+marypatterson@bogusemail.com
+
+Jane Stuart
+623-555-3006
+983 Oak St., Old-town RI 15445
+janestuart@bogusemail.com
+
+Robert Davis
+192-555-4977
+789 Maple St., Mordor IN 22215
+robertdavis@bogusemail.com
+
+James Taylor
+178-555-4899
+439 Hill St., Olympus NV 39308
+jamestaylor@bogusemail.com
+
+Eric Stuart
+952-555-3089
+777 High St., King's Landing AZ 16547
+johnstuart@bogusemail.com
+
+Charles Miller
+900-555-6426
+207 Washington St., Blackwater MA 24886
+charlesmiller@bogusemail.com

Python-Regular-Expressions/emails.py

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+import re
+
+emails = '''
+CoreyMSchafer@gmail.com
+corey.schafer@university.edu
+corey-321-schafer@my-work.net
+'''
+
+pattern = re.compile(r'[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+')
+
+matches = pattern.finditer(emails)
+
+for match in matches:
+    print(match)

Python-Regular-Expressions/simple.py

@@ -0,0 +1,34 @@
+import re
+
+text_to_search = '''
+abcdefghijklmnopqurtuvwxyz
+ABCDEFGHIJKLMNOPQRSTUVWXYZ
+1234567890
+
+Ha HaHa
+
+MetaCharacters (Need to be escaped):
+. ^ $ * + ? { } [ ] \ | ( )
+
+coreyms.com
+
+321-555-4321
+123.555.1234
+123*555*1234
+800-555-1234
+900-555-1234
+
+Mr. Schafer
+Mr Smith
+Ms Davis
+Mrs. Robinson
+Mr. T
+'''
+
+sentence = 'Start a sentence and then bring it to an end'
+
+pattern = re.compile(r'start', re.I)
+
+matches = pattern.search(sentence)
+
+print(matches)

Python-Regular-Expressions/snippets.txt

@@ -0,0 +1,30 @@
+
+.       - Any Character Except New Line
+\d      - Digit (0-9)
+\D      - Not a Digit (0-9)
+\w      - Word Character (a-z, A-Z, 0-9, _)
+\W      - Not a Word Character
+\s      - Whitespace (space, tab, newline)
+\S      - Not Whitespace (space, tab, newline)
+
+\b      - Word Boundary
+\B      - Not a Word Boundary
+^       - Beginning of a String
+$       - End of a String
+
+[]      - Matches Characters in brackets
+[^ ]    - Matches Characters NOT in brackets
+|       - Either Or
+( )     - Group
+
+Quantifiers:
+*       - 0 or More
++       - 1 or More
+?       - 0 or One
+{3}     - Exact Number
+{3,4}   - Range of Numbers (Minimum, Maximum)
+
+
+#### Sample Regexs ####
+
+[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+

Python-Regular-Expressions/urls.py

@@ -0,0 +1,19 @@
+import re
+
+urls = '''
+https://www.google.com
+http://coreyms.com
+https://youtube.com
+https://www.nasa.gov
+'''
+
+pattern = re.compile(r'https?://(www\.)?(\w+)(\.\w+)')
+
+subbed_urls = pattern.sub(r'\2\3', urls)
+
+print(subbed_urls)
+
+# matches = pattern.finditer(urls)
+
+# for match in matches:
+#     print(match.group(3))