Python中的SymPy Permutation.is_Singleton()

Permutation.is_Singleton() : is_Singleton() 是一个 sympy Python 库函数，用于检查 permutation 是否只包含一个单一元素。

语法 : sympy.combinatorics.permutations.Permutation.is_Singleton()

返回：真 – 如果排列组合只有一个元素；否则为假。

代码 #1 : is_Singleton() 示例

# Python code explaining
# SymPy.Permutation.is_Singleton()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
  
# Using from sympy.combinatorics.permutations.Permutation.is_Singleton() method 
  
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
  
b = Permutation([0])
  
  
print ("Permutation a - is_Singleton form : ", a.is_Singleton)
print ("Permutation b - is_Singleton form : ", b.is_Singleton)

输出 :

Permutation a – is_Singleton form : False
Permutation b – is_Singleton form : True

代码 #2 : is_Singleton() 示例 – 二维排列组合

# Python code explaining
# SymPy.Permutation.is_Singleton()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
  
# Using from sympy.combinatorics.permutations.Permutation.is_Singleton() method 
  
# creating Permutation
a = Permutation([[2, 4, 0], 
                 [3, 1, 2],
                 [1, 5, 6]])
  
  
print ("Permutation a - is_Singleton form : ", a.is_Singleton)