SymPy | Prufer.edges() in Python

Prufer.edges() : edges() is a sympy Python library function that returns the number of nodes and a list of edges from the given runs that connect nodes in an integer labelled tree.

Syntax :
sympy.combinatorics.Prufer.prufer.edges()

Return :
number of nodes and a list of edges

Code #1 : edges() Example

# Python code explaining
# SymPy.Prufer.edges()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer

# Using from
# sympy.combinatorics.prufer.Prufer.edges()

# Creating Prufer
a = Prufer.edges([1, 2, 3], [2, 4, 5])

# edge value
print ("Prufer a edges : ", a)

Output :

Prufer a edges : ([[0, 1], [1, 2], [1, 3], [3, 4]], 5)

Code #2 : edges() Example

# Python code explaining
# SymPy.Prufer.edges()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer

# Using from
# sympy.combinatorics.prufer.Prufer.edges()

# Creating Prufer
b = Prufer.edges([1, 2, 3, 2, 4, 5], [6, 7], [8])

# edge value

print ("Prufer b edges : ", b)

Output :

Prufer b edges : ([[0, 1], [1, 2], [1, 3], [3, 4], [5, 6]], 7)