Python中的SymPy Permutation.list()

Permutation.list() : list() 是一个 sympy Python 库函数，它将 permutation 作为一个明确的列表返回，如果大小小于 permutation 中的最大元素，可能会修剪未移动的元素。

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

返回：作为一个显式列表的包络法

代码 #1 : list() 示例

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

输出 :

Permutation a – list form : [2, 3, 0, 1]
Permutation b – list form : [1, 3, 5, 4, 2, 0]

代码 #2 : list() 例子 – 二维互换

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