Python Sympy Subset.cardinality()用法及代碼示例

Subset.cardinality()：cardinality()是一個sympy Python庫函數，它返回所有可能子集的數量。

用法：

sympy.combinatorics.subset.Subset.cardinality()

返回：
所有可能子集的數量

代碼1：cardinality()示例

# Python code explaining 
# SymPy.Subset.cardinality() 
  
# importing SymPy libraries 
from sympy.combinatorics import Permutation, Cycle 
from sympy.combinatorics.subsets import Subset 
  
# Using from  
# sympy.combinatorics.subset.Subsets.cardinality() 
  
# Creating Subset 
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd']) 
  
# cardinality value 
print ("Subset a cardinality : ", a.cardinality)

輸出：

Subset a cardinality : 16

代碼2：cardinality()示例

# Python code explaining 
# SymPy.Subset.cardinality() 
  
# importing SymPy libraries 
from sympy.combinatorics import Permutation, Cycle 
from sympy.combinatorics.subsets import Subset 
  
# Using from  
# sympy.combinatorics.subset.Subsets.cardinality() 
  
# Creating Subset 
a = Subset(['c', 'd'], ['23', 'c', 'd']) 
  
  
# cardinality value 
print ("Subset a cardinality : ", a.cardinality)

輸出：

Subset a cardinality : 8

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