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rasbt 2013-11-30 21:08:54 -05:00
parent 0a4b19311e
commit 54b60c7673
1 changed files with 9 additions and 4 deletions
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reg_expr_2_operators.py
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@ -8,14 +8,19 @@ import re
'+' matches all characters that follow (1 or more) '+' matches all characters that follow (1 or more)
'?' makes the previous character optional '?' makes the previous character optional
'{4}' previous character must match exactly 4 times '{4}' previous character must match exactly 4 times
<<<<<<< HEAD
'{2-4}' previous character must match exactly 2-4 times '{2-4}' previous character must match exactly 2-4 times
'[0-9]' matches all characters in the set of numbers 0 to 9 '[0-9]' matches all characters in the set of numbers 0 to 9
'[A-Z]' matches all characters in the set of A to Z '[A-Z]' matches all characters in the set of A to Z
'\d' matches all digits, e.g., '4', '9' ...
'\D' matches all NON-digit characters
'\s' matches all space characters: '', '\t', '\r', '\n'
'\S' matches all NON-space characters
'\w' matches all non-punctuation characters (i.e., letters and digits)
'\W' matches all NON-letter and NON-digit characters
'^bla' NOT-matches 'bla'
'let$' matches 'let' but not 'letter'
'\b' matches transition between non-word characters and word characters
=======
'{2-4}' previous character must match exactly 2-4 times
>>>>>>> 27283e2422d4773456419bf7cb8ee6845a54aff6
''' '''
data = '''2013-01-01 data = '''2013-01-01