SymPy | Python中的 Permutation.is_odd()
Permutation.is_odd() :is_odd()是一个 sympy Python库函数,用于检查排列是否为奇数。
Syntax : sympy.combinatorics.permutations.Permutation.is_odd()
Return : true – if the permutation is odd; otherwise false
代码 #1:is_odd() 示例
# Python code explaining
# SymPy.Permutation.is_odd()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.is_odd() method
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
b = Permutation([1, 3, 5, 4, 2, 0])
print ("Permutation a - is_odd form : ", a.is_odd)
print ("Permutation b - is_odd form : ", b.is_odd)
输出 :
Permutation a – is_odd form : False
Permutation b – is_odd form : True
代码 #2 : is_odd() 示例– 2D 排列
# Python code explaining
# SymPy.Permutation.is_odd()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.is_odd() method
# creating Permutation
a = Permutation([[2, 4, 0],
[3, 1, 2],
[1, 5, 6]])
print ("Permutation a - is_odd form : ", a.is_odd)
输出 :
Permutation a – is_odd form : False