SymPy | Subset.prev_binary() in Python

Subset.prev_binary() : prev_binary() is a sympy Python library function that returns the previous binary ordered subset.

Syntax :
sympy.combinatorics.subset.Subset.prev_binary()

Return :
the previous binary ordered subset.

Code #1 : prev_binary() Example

# 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)

Output :

Subset a prev_binary : [‘c’]

Code #2 : prev_binary() Example

# 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)

Output :

Subset a prev_binary : [‘k’]