re_find(regex, s, flags=0)
Finds regex in s, returning the match in the simplest possible form guessed by captures in given regular expression:
| Captures | Return value |
|---|---|
| no captures | a matched string |
| single positional capture | a substring matched by capture |
| only positional captures | a tuple of substrings for captures |
| only named captures | a dict of substrings for captures |
| mixed pos/named captures | a match object |
Returns None on mismatch.
# Find first number in a line
silent(int)(re_find(r'\d+', line))
# Find number of men in a line
re_find(r'(\d+) m[ae]n', line)
# Parse uri into nice dict
re_find(r'^/post/(?P<id>\d+)/(?P<action>\w+)$', uri)re_test(regex, s, flags=0)
Tests whether regex can be found in s.
re_all(regex, s, flags=0) re_iter(regex, s, flags=0)
Returns a list or an iterator of all matches of regex in s. Matches are presented in most simple form possible, see table in re_find docs.
# A fast and dirty way to parse ini section into dict
dict(re_iter('(\w+)=(\w+)', ini_text))re_finder(regex, flags=0)
Returns a function that calls re_find for its sole argument. Its main purpose is quickly constructing mapper functions for map and friends.
See also extended_fns.
re_tester(regex, flags=0)
Returns a function that calls re_test for it's sole argument. Aimed at quick construction of predicates for use in filter and friends.
See also extended_fns.
str_join([sep=""], seq)
Joins sequence with sep. Same as sep.join(seq), but forcefully converts all elements to separator type, str by default.
See also joining.
cut_prefix(s, prefix)
Cuts prefix from given string if it's present.
cut_suffix(s, suffix)
Cuts suffix from given string if it's present.