fix indentation

Doc/library/itertools.rst

@@ -738,26 +738,26 @@ which incur interpreter overhead.
        s = list(iterable)
        return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
 
-    def unique_everseen(iterable, key=None):
-        "List unique elements, preserving order. Remember all elements ever seen."
-        # unique_everseen('AAAABBBCCDAABBB') --> A B C D
-        # unique_everseen('ABBCcAD', str.lower) --> A B C D
-        seen = set()
-        seen_add = seen.add
-        if key is None:
-            for element in iterable:
-                if element not in seen:
-                    seen_add(element)
-                    yield element
-        else:
-            for element in iterable:
-                k = key(element)
-                if k not in seen:
-                    seen_add(k)
-                    yield element
-
-    def unique_justseen(iterable, key=None):
-        "List unique elements, preserving order. Remember only the element just seen."
-        # unique_justseen('AAAABBBCCDAABBB') --> A B C D A B
-        # unique_justseen('ABBCcAD', str.lower) --> A B C A D
-        return imap(next, imap(itemgetter(1), groupby(iterable, key)))
+   def unique_everseen(iterable, key=None):
+       "List unique elements, preserving order. Remember all elements ever seen."
+       # unique_everseen('AAAABBBCCDAABBB') --> A B C D
+       # unique_everseen('ABBCcAD', str.lower) --> A B C D
+       seen = set()
+       seen_add = seen.add
+       if key is None:
+           for element in iterable:
+               if element not in seen:
+                   seen_add(element)
+                   yield element
+       else:
+           for element in iterable:
+               k = key(element)
+               if k not in seen:
+                   seen_add(k)
+                   yield element
+
+   def unique_justseen(iterable, key=None):
+       "List unique elements, preserving order. Remember only the element just seen."
+       # unique_justseen('AAAABBBCCDAABBB') --> A B C D A B
+       # unique_justseen('ABBCcAD', str.lower) --> A B C A D
+       return imap(next, imap(itemgetter(1), groupby(iterable, key)))