Python 中的 SymPy | Subset.prev_binary()
原文:https://www.geesforgeks.org/sympy-subset-prev_binary-in-python/
subset.prev_binary():prev_binary()是一个 sympy Python 库函数，返回之前的二进制有序子集。
语法: sympy.combinations.subset.subset.prev_binary()
返回: 之前的二进制有序子集。
代码#1 : prev_binary()示例
# Python code explaining
# SymPy.Subset.prev_binary()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
# Using from
# sympy.combinatorics.subset.Subsets.prev_binary()
# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])
# prev_binary value
print ("Subset a prev_binary : ", a.prev_binary().subset)
输出:
子集 a prev_binary : ['c']
代码#2 : prev_binary()示例
# Python code explaining
# SymPy.Subset.prev_binary()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
# Using from
# sympy.combinatorics.subset.Subsets.prev_binary()
# Creating Subset
a = Subset(['k', 'a'], ['23', 'k', 'a'])
# prev_binary value
print ("Subset a prev_binary : ", a.prev_binary().subset)
输出:
子集 a prev_binary : ['k']
