Python 中的 SymPy | Subset.cardinality()

原文:https://www . geesforgeks . org/sympy-subset-cardinality-in-python/

subset . cardinality():cardinality()是一个 sympy Python 库函数，返回所有可能子集的数量。

语法: sympy . combinations . subset . subset . cardinality()

返回: 所有可能子集的数量

代码#1:基数()示例

# Python code explaining
# SymPy.Subset.cardinality()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.cardinality()

# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])

# cardinality value
print ("Subset a cardinality : ", a.cardinality)

输出:

子集 a 基数:16

代码#2:基数()示例

# Python code explaining
# SymPy.Subset.cardinality()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.cardinality()

# Creating Subset
a = Subset(['c', 'd'], ['23', 'c', 'd'])

# cardinality value
print ("Subset a cardinality : ", a.cardinality)

输出:

子集 a 基数:8

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