Python 中的 SymPy | arrangement.is_Singleton()

原文:https://www.geesforgeks.org/sympy-arrange-is_singleton-in-python/

arrangement.is_Singleton():is_Singleton()是一个 sympy Python 库函数，检查置换是否只包含一个单个元素。

语法:sympy.combinations.arranges.arrangement.is_Singleton()

返回:true–如果置换只有一个元素；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:

排列 a–is_Singleton 形式:假 排列 b–is_Singleton 形式:真

代码#2 : is_Singleton()示例–2D 置换

# 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)

输出:

排列 a–is_Singleton 形式:假

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