Python 中的 SymPy | arrange.is_even()
原文:https://www.geesforgeks.org/sympy-arrange-is_even-in-python/
arrange.is_even():is_even()是一个 sympy Python 库函数，检查排列是否为偶数。
语法:sympy.combinations.arranges.arrange.is_even()
返回:true–如果排列是偶数；否则为假
代码#1 : is_even()示例
# Python code explaining
# SymPy.Permutation.is_even()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.is_even() method
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
b = Permutation([1, 3, 5, 4, 2, 0])
print ("Permutation a - is_even form : ", a.is_even)
print ("Permutation b - is_even form : ", b.is_even)
输出:
排列 a–is_偶数形式:真 排列 b–is_偶数形式:假
代码#2 : is_even()示例–2D 置换
# Python code explaining
# SymPy.Permutation.is_even()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.is_even() method
# creating Permutation
a = Permutation([[2, 4, 0],
[3, 1, 2],
[1, 5, 6]])
print ("Permutation a - is_even form : ", a.is_even)
输出:
排列 a–is_偶数形式:真
