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ClassicalCrystalOfAlcovePaths?

File: /usr/local/sage/sage-6.4/src/sage/misc/lazy_import.pyx
Signature : ClassicalCrystalOfAlcovePaths()
Docstring :
EXAMPLES:

   sage: from sage.misc.lazy_import import LazyImport
   sage: my_integer = LazyImport('sage.rings.all', 'Integer')
   sage: my_integer(4)
   4
   sage: my_integer('101', base=2)
   5
   sage: my_integer(3/2)
   Traceback (most recent call last):
   ...
   TypeError: no conversion of this rational to integer

ClassicalCrystalOfAlcovePaths()
Error in lines 1-1 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 865, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> File "sage/misc/lazy_import.pyx", line 358, in sage.misc.lazy_import.LazyImport.__call__ (build/cythonized/sage/misc/lazy_import.c:3222) File "sage/misc/lazy_import.pyx", line 250, in sage.misc.lazy_import.LazyImport._get_object (build/cythonized/sage/misc/lazy_import.c:2035) AttributeError: 'module' object has no attribute 'ClassicalCrystalOfAlcovePaths' 
import ClassicalCrystalOfAlcovePaths
Error in lines 1-1 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 865, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> ImportError: No module named ClassicalCrystalOfAlcovePaths 
C = ClassicalCrystalOfAlcovePaths(['G',2],[0,1])
Error in lines 1-1 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 865, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> File "sage/misc/lazy_import.pyx", line 358, in sage.misc.lazy_import.LazyImport.__call__ (build/cythonized/sage/misc/lazy_import.c:3222) File "sage/misc/lazy_import.pyx", line 250, in sage.misc.lazy_import.LazyImport._get_object (build/cythonized/sage/misc/lazy_import.c:2035) AttributeError: 'module' object has no attribute 'ClassicalCrystalOfAlcovePaths' 
C = crystals.AlcovePaths(['G',2],[0,1])

C
Highest weight crystal of alcove paths of type ['G', 2] and weight Lambda[2] 
2+3
5