add solutions week 278 in python

1 files changed, 26 insertions, 0 deletions

diff --git a/challenge-278/steven-wilson/python/ch-1.py b/challenge-278/steven-wilson/python/ch-1.py
new file mode 100644
index 0000000000..8e113ff425
--- /dev/null
+++ b/challenge-278/steven-wilson/python/ch-1.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+import re
+from operator import itemgetter
+
+
+def sort_string(string):
+    """ Given a shuffle string, return the sorted string.  A string is shuffled
+    by appending word position to each word.
+
+    >>> sort_string("and2 Raku3 cousins5 Perl1 are4")
+    'Perl and Raku are cousins'
+    >>> sort_string("guest6 Python1 most4 the3 popular5 is2 language7")
+    'Python is the most popular guest language'
+    >>> sort_string("Challenge3 The1 Weekly2")
+    'The Weekly Challenge'
+    """
+    p = re.compile('^(\w+)(\d+)$')
+    words_sorted = sorted((p.search(word).groups() for word in string.split(" ")), key=itemgetter(1))
+    return " ".join(word[0] for word in words_sorted)
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod(verbose=True)