solves word pattern in python

Author: anishLearnsToCode

README.md

@@ -86,7 +86,7 @@
 | 276 | 🔒 [Paint Fence](https://leetcode.com/problems/paint-fence) | Easy | |
 | 278 | [First Bad Version](https://leetcode.com/problems/first-bad-version) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/FirstBadVersion.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/first_bad_version.py) |
 | 283 | [Move Zeroes](https://leetcode.com/problems/move-zeroes) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/MoveZeros.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/move_zeroes.py) |
-| 290 | [Word Pattern](https://leetcode.com/problems/word-pattern) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/WordPattern.java) |
+| 290 | [Word Pattern](https://leetcode.com/problems/word-pattern) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/WordPattern.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/word_pattern.py) |
 | 292 | [Nim Game](https://leetcode.com/problems/nim-game) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/NimGame.java) |
 | 293 | [Flip Game](https://leetcode.com/problems/flip-game) | Easy | |
 | 299 | [Bulls and Cows](https://leetcode.com/problems/bulls-and-cows) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/BullsAndCows.java) |

python/word_pattern.py

@@ -0,0 +1,20 @@
+class Solution:
+    def wordPattern(self, pattern: str, s: str) -> bool:
+        words = s.split()
+        if len(words) != len(pattern):
+            return False
+        mapping = {}
+        used_words = set()
+        for character, word in zip(pattern, words):
+            if character in mapping:
+                if mapping[character] != word:
+                    return False
+            elif word in used_words:
+                return False
+            else:
+                mapping[character] = word
+                used_words.add(word)
+        return True
+
+
+print(Solution().wordPattern('abba', 'dog dog dog dog'))