Remove useless code

Author: luozhouyang

similarity/cosine.py

@@ -5,7 +5,8 @@
 from .string_similarity import NormalizedStringSimilarity
 
 
-class Cosine(ShingleBased, NormalizedStringDistance, NormalizedStringSimilarity):
+class Cosine(ShingleBased, NormalizedStringDistance,
+             NormalizedStringSimilarity):
 
     def __init__(self, k):
         super().__init__(k)
@@ -24,10 +25,12 @@ def similarity(self, s0, s1):
             return 0.0
         profile0 = self.get_profile(s0)
         profile1 = self.get_profile(s1)
-        return self._dot_product(profile0, profile1) / (self._norm(profile0) * self._norm(profile1))
+        return self._dot_product(profile0, profile1) / (
+                    self._norm(profile0) * self._norm(profile1))
 
     def similarity_profiles(self, profile0, profile1):
-        return self._dot_product(profile0, profile1) / (self._norm(profile0) * self._norm(profile1))
+        return self._dot_product(profile0, profile1) / (
+                    self._norm(profile0) * self._norm(profile1))
 
     @staticmethod
     def _dot_product(profile0, profile1):
@@ -50,13 +53,3 @@ def _norm(profile):
         for k, v in profile.items():
             agg += 1.0 * v * v
         return math.sqrt(agg)
-
-
-if __name__ == "__main__":
-    cosine = Cosine(1)
-    str0 = "上海市宝山区 你好"
-    str1 = "上海浦东新区 你好吗"
-    d = cosine.distance(str0, str1)
-    s = cosine.similarity(str0, str1)
-    print(d)
-    print(s)