1 files changed, 38 insertions, 0 deletions
diff --git a/challenge-318/packy-anderson/python/ch-1.py b/challenge-318/packy-anderson/python/ch-1.py
new file mode 100755
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+++ b/challenge-318/packy-anderson/python/ch-1.py
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+#!/usr/bin/env python
+
+import re
+
+def groupPosition(str):
+  # python doesn't support nested groups,
+  # so let's match just the first occurence
+  hasGroups = re.compile(r"([a-z])\1\1+", re.I)
+  groups = []
+
+  match = hasGroups.search(str)
+  while match:
+     # push the occurrence onto a list of groups
+     # the 0th group is the entire match
+     groups.append(match.group(0))
+     # then remove from the start of the string to
+     # the end of the first occurence
+     str = str[match.end():]
+     # and match against the new string
+     match = hasGroups.search(str)
+
+  if groups:
+    return ', '.join([ f'"{s}"' for s in groups ])
+  else:
+    return '""'
+
+def solution(str):
+    print(f'Input: $str = "{str}"')
+    print(f'Output: { groupPosition(str) }')
+
+print('Example 1:')
+solution("abccccd")
+
+print('\nExample 2:')
+solution("aaabcddddeefff")
+
+print('\nExample 3:')
+solution("abcdd")