Python 中的 SymPy | arrange . is _ Empty()

原文:https://www . geeksforgeeks . org/sympy-arrange-is _ empty-in-python/

replacement . is _ Empty():is _ Empty()是一个 sympy Python 库函数，检查置换是否是零元素的集合。

语法:sympy . combinations . arranges . arrange . is _ Empty()

返回: true:如果为空；否则为假

代码#1 : is_Empty()示例

# Python code explaining
# SymPy.Permutation.is_Empty()

# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation

# Using from sympy.combinatorics.permutations.Permutation.is_Empty() method 

# creating Permutation
a = Permutation([[2, 0], [3, 1]])

b = Permutation([1, 3, 5, 4, 2, 0])

print ("Permutation a - is_Empty form : ", a.is_Empty)
print ("Permutation b - is_Empty form : ", b.is_Empty)

输出:

排列 a–is _ 空形式:假 排列 b–is _ 空形式:假

代码#2 : is_Empty()示例–2D 置换

# Python code explaining
# SymPy.Permutation.is_Empty()

# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation

# Using from sympy.combinatorics.permutations.Permutation.is_Empty() method 

# creating Permutation
a = Permutation([[2, 4, 0], 
                 [3, 1, 2],
                 [1, 5, 6]])

print ("Permutation a - is_Empty form : ", a.is_Empty)

输出:

排列 a–is _ 空形式:假

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