Python Sympy Subset.subset_indices()用法及代码示例

Subset.subset_indices()：subset_indices()是一个sympy Python库函数，它返回列表中超集的子集索引

用法：

sympy.combinatorics.subset.Subset.subset_indices()

返回：
列表中超集的子集索引
如果子集的所有元素都不在超集中。 –列表为空

代码1：subset_indices()示例

# Python code explaining 
# SymPy.Subset.subset_indices() 
  
# importing SymPy libraries 
from sympy.combinatorics import Permutation, Cycle 
from sympy.combinatorics.subsets import Subset 
  
# Using from  
# sympy.combinatorics.subset.Subsets.subset_indices() 
  
# superset 
super_set = [4, 3, 2, 7] 
  
# Creating Subset 
a = Subset.subset_indices((['geek', 'for', 'c', 'd']), super_set) 
  
# subset_indices value 
print ("Subset a subset_indices : ", a)

输出：

Subset a subset_indices : []

代码2：subset_indices()示例

# Python code explaining 
# SymPy.Subset.subset_indices() 
  
# importing SymPy libraries 
from sympy.combinatorics import Permutation, Cycle 
from sympy.combinatorics.subsets import Subset 
  
# Using from  
# sympy.combinatorics.subset.Subsets.subset_indices() 
  
# superset 
super_set = [4, 3, 2, 7] 
  
# Creating Subset 
a = Subset.subset_indices(([2, 3, 4]), super_set) 
  
# subset_indices value 
print ("Subset a subset_indices : ", a)

输出：

Subset a subset_indices : [2, 1, 0]

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注：本文由纯净天空筛选整理自noobestars101大神的英文原创作品 SymPy | Subset.subset_indices() in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。